CN112686555A - Comprehensive analysis method, device and system for regional power distribution network - Google Patents

Comprehensive analysis method, device and system for regional power distribution network Download PDF

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CN112686555A
CN112686555A CN202011645239.6A CN202011645239A CN112686555A CN 112686555 A CN112686555 A CN 112686555A CN 202011645239 A CN202011645239 A CN 202011645239A CN 112686555 A CN112686555 A CN 112686555A
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distribution network
regional distribution
analysis
comprehensive analysis
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张颖媛
王伟
周捷
杨晓旭
陈永华
范寅秋
李斌
王路
桂义明
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NARI Technology Co Ltd
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Abstract

本发明公开了一种区域配电网综合分析方法、装置及系统，包括获取预设的区域配电网综合分析模型，区域配电网综合分析模型包括目标层、准则层和分析指标计算层；将若干个待分析的区域配电网案例输入至区域配电网综合分析模型，针对各待分析的区域配电网案例，目标层基于区域配电网案例生成综合分析目标；准则层基于综合分析目标生成若干个分析指标；分析指标计算层针对各分析指标分别计算出对应的指标值；基于预设的权重系数，以及与各待分析的区域配电网案例对应的各指标值，计算出各待分析的区域配电网案例的综合权重；筛选出综合权重最大的区域配电网案例作为最优区域配电网案例析。本发明能够实现对区域配电网的不同改造建设方案进行较为全面的比选分析。

Figure 202011645239

The invention discloses a comprehensive analysis method, device and system of a regional distribution network, including obtaining a preset comprehensive analysis model of the regional distribution network, and the comprehensive analysis model of the regional distribution network includes a target layer, a criterion layer and an analysis index calculation layer; Input several regional distribution network cases to be analyzed into the comprehensive analysis model of regional distribution network, for each regional distribution network case to be analyzed, the target layer generates comprehensive analysis targets based on the regional distribution network cases; the criterion layer is based on comprehensive analysis The target generates several analysis indexes; the analysis index calculation layer calculates the corresponding index values for each analysis index; based on the preset weight coefficients and the index values corresponding to the regional distribution network cases to be analyzed, calculate the corresponding index values. The comprehensive weight of the regional distribution network cases to be analyzed; the regional distribution network case with the largest comprehensive weight is selected as the optimal regional distribution network case analysis. The invention can realize a more comprehensive comparison and selection analysis of different reconstruction and construction schemes of the regional distribution network.

Figure 202011645239

Description

Comprehensive analysis method, device and system for regional power distribution network
Technical Field
The invention belongs to the technical field of power distribution network planning, and particularly relates to a comprehensive analysis method, a comprehensive analysis device and a comprehensive analysis system for a regional power distribution network.
Background
With the increasing energy crisis and environmental protection awareness, distributed power sources (especially distributed photovoltaic) are rapidly developed, and the trend of large-scale access to a power distribution network is obvious. The distributed power supply with typical characteristics of intermittence, randomness, volatility and the like can bring certain negative effects on safe and economic operation of the power distribution network, such as difficulty in local consumption of the distributed power supply due to output, node voltage out-of-limit, change of power flow distribution, increase of system network loss and the like. In addition, the electric vehicles, the electric heating equipment and other electrified equipment are connected into the power distribution network, so that the peak-valley difference of the power distribution network is increased, and the peak regulation and standby requirements are increased. The distributed energy storage is considered to be capable of effectively relieving the time sequence mismatching between the distributed power output and the load demand by virtue of the flexible charging and discharging regulation capability, so that the distributed energy storage is widely concerned in the planning of the regional power distribution network. Meanwhile, a set of analysis and evaluation system is necessary to be constructed so as to reasonably evaluate the comprehensive performance and the overall development level of the regional power distribution network.
At present, a lot of research achievements exist in the aspect of analysis and evaluation of a distributed power supply access power distribution network, but evaluation of single-aspect indexes is mainly performed, and comprehensive evaluation research on all indexes of the power distribution network is less; especially, the regional power distribution network with the distributed energy storage and the distributed power supply simultaneously accessed is evaluated by a fresh systematic comprehensive analysis system.
Disclosure of Invention
Aiming at the problems, the invention provides a comprehensive analysis method, a comprehensive analysis device and a comprehensive analysis system for a regional power distribution network, which can realize relatively comprehensive comparison and selection analysis on different transformation construction schemes of the regional power distribution network.
In order to achieve the technical purpose and achieve the technical effects, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a method for comprehensively analyzing a regional distribution network, including:
acquiring a preset regional distribution network comprehensive analysis model, wherein the regional distribution network comprehensive analysis model comprises a target layer, a rule layer and an analysis index calculation layer;
inputting a plurality of regional distribution network cases to be analyzed into the regional distribution network comprehensive analysis model, and aiming at each regional distribution network case to be analyzed, generating a comprehensive analysis target by the target layer based on the regional distribution network cases; the criterion layer generates a plurality of analysis indexes based on a comprehensive analysis target; the analysis index calculation layer calculates corresponding index values aiming at each analysis index;
calculating the comprehensive weight of each to-be-analyzed regional distribution network case based on a preset weight coefficient and each index value corresponding to each to-be-analyzed regional distribution network case;
and screening out the regional distribution network case with the maximum comprehensive weight as an optimal regional distribution network case, and completing the comprehensive analysis of the regional distribution network.
Optionally, the comprehensive analysis target is an analysis decision target, which includes an economic target, an environmental protection target and a reliability target.
Optionally, for economic objectives, the analysis indicators include investment cost, operation and maintenance cost, electricity purchasing cost, and electricity selling cost; for environmental objectives, the analysis metrics include pollutant reduction; aiming at the reliability target, the analysis index comprises the line loss rate and the load power shortage rate of the regional power distribution network.
Optionally, the calculation formula of the investment cost, the operation and maintenance cost, the electricity purchasing cost and the electricity selling cost is as follows:
Figure BDA0002880163900000021
CACC＝CINSfcr
Figure BDA0002880163900000022
COM(Pit)＝KOMiPitΔt
Figure BDA0002880163900000023
Figure BDA0002880163900000024
wherein i represents the number of a distributed power source or distributed energy storage in a regional power distribution network; n represents the total number of distributed power sources or distributed energy stores; t represents the operation period of the regional power distribution network; pitThe active power output of the distributed power supply or the distributed energy storage with the number i in the time period t is represented; cDEP-DERRepresents a depreciation cost of installation of a distributed power supply or distributed energy storage; cACCRepresents the annual average cost of installation of distributed power sources or distributed energy storage; prRepresents a rated power of a distributed power source or distributed energy storage; f. ofcfA capacity factor representing a distributed power source or distributed energy storage; cINSRepresents the installation cost of the distributed power supply or the distributed energy storage; f. ofcrA capital recovery factor representing distributed power or distributed energy storage; d represents interest rate or depreciation rate; l represents the lifetime of the distributed power supply or distributed energy storage; cOMRepresenting the operation and maintenance management cost of the distributed power supply or the distributed energy storage; kOMThe operation and maintenance management coefficient represents distributed power sources or distributed energy storage; delta t tableShowing an optimized time interval; cPEtRepresenting the expense of purchasing electricity from the regional distribution network; i isSEtRepresenting the income of regional distribution network electricity selling; cptRepresenting the electricity price of the regional distribution network when purchasing electricity; cstRepresenting the electricity price of the regional distribution network when selling electricity; pgridtThe interactive power between the regional distribution network and the system is represented, the value is positive when electricity is purchased, and the value is negative when electricity is sold.
Optionally, the pollutant reduction amount is calculated by the formula:
Figure BDA0002880163900000025
wherein, CENVThe cost of pollutant emission treatment for the regional distribution network; k is the type number of the discharged pollutant; m is the total number of types of pollutants discharged by the system under consideration; beta is akA cost factor required for treating the pollutant k; and alpha x k is the emission coefficient of various pollutants corresponding to different electric energy production modes.
Optionally, the line loss rate and the load power shortage rate of the regional power distribution network are calculated according to the following formula:
Figure BDA0002880163900000031
Figure BDA0002880163900000032
Figure BDA0002880163900000033
Figure BDA0002880163900000034
wherein, γavg: line loss rate of the regional distribution network; j: the number of radiation lines of the regional power distribution network; delta Pj: of the j-th lineLine loss; pj: load of jth line; deltaLPSP: the load power shortage rate; t is t0: an initial time; t: a comprehensive analysis period;
Figure BDA0002880163900000035
taking the value of the load power shortage; pload(t): the system load requirement at the moment t; qLPS(t): and (4) calculating the load power shortage.
Optionally, the method for obtaining the preset weight coefficient includes:
and calculating the weight coefficient of each analysis index by using an analytic hierarchy process.
In a second aspect, the present invention provides a regional distribution network comprehensive analysis device, including:
the system comprises an acquisition unit, a calculation unit and a calculation unit, wherein the acquisition unit is used for acquiring a preset regional distribution network comprehensive analysis model which comprises a target layer, a criterion layer and an analysis index calculation layer;
the first calculation unit is used for inputting a plurality of regional distribution network cases to be analyzed into the regional distribution network comprehensive analysis model, and aiming at each regional distribution network case to be analyzed, the target layer generates a comprehensive analysis target based on the regional distribution network case; the criterion layer generates a plurality of analysis indexes based on a comprehensive analysis target; the analysis index calculation layer calculates corresponding index values aiming at each analysis index;
the second calculation unit is used for calculating the comprehensive weight of each to-be-analyzed regional distribution network case based on a preset weight coefficient and each index value corresponding to each to-be-analyzed regional distribution network case;
and the analysis unit is used for screening out the regional distribution network case with the maximum comprehensive weight as an optimal regional distribution network case to complete the comprehensive analysis of the regional distribution network.
In a third aspect, the present invention provides a regional distribution network comprehensive analysis system, including a storage medium and a processor;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any one of the first aspects.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a comprehensive analysis method, a comprehensive analysis device and a comprehensive analysis system for a regional power distribution network, which can realize comprehensive comparison and selection analysis on different transformation construction schemes of the regional power distribution network.
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In order that the present invention may be more readily and clearly understood, reference is now made to the following detailed description of the invention taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic flow chart of a comprehensive analysis method for a regional distribution network according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.
Example 1
The embodiment of the invention provides a comprehensive analysis method for a regional distribution network, which comprises the following steps of:
acquiring a preset regional distribution network comprehensive analysis model, wherein the regional distribution network comprehensive analysis model comprises a target layer, a rule layer and an analysis index calculation layer;
inputting a plurality of regional distribution network cases to be analyzed into the regional distribution network comprehensive analysis model, and aiming at each regional distribution network case to be analyzed, generating a comprehensive analysis target by the target layer based on the regional distribution network cases; the criterion layer generates a plurality of analysis indexes based on a comprehensive analysis target; the analysis index calculation layer calculates corresponding index values aiming at each analysis index;
calculating the comprehensive weight of each to-be-analyzed regional distribution network case based on a preset weight coefficient and each index value corresponding to each to-be-analyzed regional distribution network case;
and screening out the regional distribution network case with the maximum comprehensive weight as an optimal regional distribution network case, and completing the comprehensive analysis of the regional distribution network.
In a specific implementation manner of the embodiment of the present invention, the comprehensive analysis target is an analysis decision target, which includes an economic target, an environmental protection target, and a reliability target.
Aiming at economic targets, the analysis indexes comprise investment cost, operation and maintenance cost, electricity purchasing cost and electricity selling cost; for environmental protection goals, the analysis index comprises pollutant reduction amount; aiming at the reliability target, the analysis index comprises the line loss rate and the load power shortage rate of the regional power distribution network.
The calculation formulas of the investment cost, the operation and maintenance cost, the electricity purchasing cost and the electricity selling cost are as follows:
Figure BDA0002880163900000051
CACC＝CINSfcr
Figure BDA0002880163900000052
COM(Pit)＝KOMiPitΔt
Figure BDA0002880163900000053
Figure BDA0002880163900000054
wherein i represents the number of a distributed power source or distributed energy storage in a regional power distribution network; n represents the total number of distributed power sources or distributed energy stores; t represents the operation period of the regional power distribution network; pitThe active power output of the distributed power supply or the distributed energy storage with the number i in the time period t is represented; cDEP-DERRepresents a depreciation cost of installation of a distributed power supply or distributed energy storage; cACCRepresents the annual average cost of installation of distributed power sources or distributed energy storage; prRepresents a rated power of a distributed power source or distributed energy storage; f. ofcfA capacity factor representing a distributed power source or distributed energy storage; cINSRepresents the installation cost of the distributed power supply or the distributed energy storage; f. ofcrA capital recovery factor representing distributed power or distributed energy storage; d represents interest rate or depreciation rate; l represents the lifetime of the distributed power supply or distributed energy storage; cOMRepresenting the operation and maintenance management cost of the distributed power supply or the distributed energy storage; kOMThe operation and maintenance management coefficient represents distributed power sources or distributed energy storage; Δ t represents the optimized time interval; cPEtRepresenting the expense of purchasing electricity from the regional distribution network; i isSEtRepresenting the income of regional distribution network electricity selling; cptRepresenting the electricity price of the regional distribution network when purchasing electricity; cstRepresenting the electricity price of the regional distribution network when selling electricity; pgridtThe interactive power between the regional distribution network and the system is represented, the value is positive when electricity is purchased, and the value is negative when electricity is sold.
The calculation formula of the pollutant emission reduction amount is as follows:
Figure BDA0002880163900000055
wherein, CENVThe cost of pollutant emission treatment for the regional distribution network; k is the type number of the discharged pollutant; m is the total number of types of pollutants discharged by the system under consideration; beta is akA cost factor required for treating the pollutant k; and alpha x k is the emission coefficient of various pollutants corresponding to different electric energy production modes.
The calculation formula of the line loss rate and the load power shortage rate of the regional power distribution network is as follows:
Figure BDA0002880163900000056
Figure BDA0002880163900000061
Figure BDA0002880163900000062
Figure BDA0002880163900000063
wherein, γavg: line loss rate of the regional distribution network; j: the number of radiation lines of the regional power distribution network; delta Pj: line loss of the jth line; pj: load of jth line; deltaLPSP: the load power shortage rate; t is t0: an initial time; t: a comprehensive analysis period;
Figure BDA0002880163900000064
taking the value of the load power shortage; pload(t): the system load requirement at the moment t; qLPS(t): and (4) calculating the load power shortage.
In a specific embodiment of the present invention, the method for obtaining the preset weight coefficient includes:
and calculating the weight coefficient of each analysis index by using an analytic hierarchy process.
The method for obtaining the preset weight coefficient is described in detail below with reference to a specific implementation process.
Constructing a judgment matrix, wherein the expression mode of the judgment matrix is as follows:
Figure BDA0002880163900000065
in the formula, n is the number of the analysis indexes, and the matrix represents the relative importance degree between different analysis indexes. And dividing the data into 9 grades according to different importance degrees, wherein the grades are 0.1-0.9. The rules for importance assessment are shown in table 1.
TABLE 1 importance degree score grades
Figure BDA0002880163900000066
The specific numerical selection needs expert scoring according to actual objects, and the relative importance is judged by comparing every two. Then, calculating the weight value of the factor set of each analysis index, wherein the calculation method comprises the following steps:
Figure BDA0002880163900000067
Wij＝Wix-Wjx+0.5
then, the overall weight of each analysis index is calculated, and the calculation method comprises the following steps:
Wix＝WyxWiy
and obtaining the overall weight of different analysis indexes. Finally, consistency check is carried out, and the calculation method is as follows:
Figure BDA0002880163900000071
in summary, the method in the embodiment of the present invention can be applied to the following scenarios:
(1) weak links of the power distribution network in the stock area are analyzed, different transformation schemes of the power distribution network in the stock area are comprehensively compared, so that upgrading and transformation of the power distribution network in the area are delayed, the consumption level of the power distribution network in the area to the distributed power supply is improved, and the running performance of the power distribution network in the area is improved.
(2) Different construction schemes of the incremental regional power distribution network are selected, and distributed power sources and/or distributed energy storage are optimally configured, so that the orderly development of the distributed power sources and the distributed energy storage is promoted, the investment of a power grid and the power sources is reduced, and a certain reference basis is provided for the construction and development of the incremental regional power distribution network.
Example 2
Based on the same inventive concept as embodiment 1, the embodiment of the present invention provides a comprehensive analysis device for a regional distribution network, including:
the system comprises an acquisition unit, a calculation unit and a calculation unit, wherein the acquisition unit is used for acquiring a preset regional distribution network comprehensive analysis model which comprises a target layer, a criterion layer and an analysis index calculation layer;
the first calculation unit is used for inputting a plurality of regional distribution network cases to be analyzed into the regional distribution network comprehensive analysis model, and aiming at each regional distribution network case to be analyzed, the target layer generates a comprehensive analysis target based on the regional distribution network case; the criterion layer generates a plurality of analysis indexes based on a comprehensive analysis target; the analysis index calculation layer calculates corresponding index values aiming at each analysis index;
the second calculation unit is used for calculating the comprehensive weight of each to-be-analyzed regional distribution network case based on a preset weight coefficient and each index value corresponding to each to-be-analyzed regional distribution network case;
and the analysis unit is used for screening out the regional distribution network case with the maximum comprehensive weight as an optimal regional distribution network case to complete the comprehensive analysis of the regional distribution network.
The rest of the process was the same as in example 1.
Example 3
Based on the same inventive concept as embodiment 1, the embodiment of the invention provides a regional distribution network comprehensive analysis system, which comprises a storage medium and a processor;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any of embodiment 1.
The rest of the process was the same as in example 1.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and their equivalents.

Claims (9)

1.一种区域配电网综合分析方法，其特征在于，包括：1. a comprehensive analysis method for regional distribution network, is characterized in that, comprises: 获取预设的区域配电网综合分析模型，所述区域配电网综合分析模型包括目标层、准则层和分析指标计算层；Obtaining a preset comprehensive analysis model of the regional distribution network, the comprehensive analysis model of the regional distribution network includes a target layer, a criterion layer and an analysis index calculation layer; 将若干个待分析的区域配电网案例输入至所述区域配电网综合分析模型，针对各待分析的区域配电网案例，所述目标层基于区域配电网案例生成综合分析目标；所述准则层基于综合分析目标生成若干个分析指标；所述分析指标计算层针对各分析指标分别计算出对应的指标值；A number of regional distribution network cases to be analyzed are input into the regional distribution network comprehensive analysis model, and for each regional distribution network case to be analyzed, the target layer generates a comprehensive analysis target based on the regional distribution network cases; The criterion layer generates several analysis indexes based on the comprehensive analysis target; the analysis index calculation layer calculates corresponding index values for each analysis index respectively; 基于预设的权重系数，以及与各待分析的区域配电网案例对应的各指标值，计算出各待分析的区域配电网案例的综合权重；Based on the preset weight coefficient and each index value corresponding to each regional distribution network case to be analyzed, the comprehensive weight of each regional distribution network case to be analyzed is calculated; 筛选出综合权重最大的区域配电网案例作为最优区域配电网案例，完成区域配电网综合分析。The regional distribution network case with the largest comprehensive weight is selected as the optimal regional distribution network case, and the comprehensive analysis of the regional distribution network is completed. 2.根据权利要求1所述的一种区域配电网综合分析方法，其特征在于：所述综合分析目标为分析决策目标，包括经济性目标、环保性目标和可靠性目标。2 . The comprehensive analysis method for a regional distribution network according to claim 1 , wherein the comprehensive analysis target is an analysis decision target, including an economic target, an environmental protection target and a reliability target. 3 . 3.根据权利要求2所述的一种区域配电网综合分析方法，其特征在于：针对经济性目标，所述分析指标包括投资成本、运维成本、购电成本、售电成本；针对环保性目标，所述分析指标包括污染物减排量；针对可靠性目标，所述分析指标包括区域配电网的线损率和负荷缺电率。3. A method for comprehensive analysis of a regional distribution network according to claim 2, characterized in that: for economic goals, the analysis indicators include investment cost, operation and maintenance cost, power purchase cost, and power sales cost; for environmental protection For the reliability target, the analysis index includes the line loss rate and the load power shortage rate of the regional distribution network. 4.根据权利要求3所述的一种区域配电网综合分析方法，其特征在于：所述投资成本、运维成本、购电成本、售电成本的计算公式为：4. A kind of comprehensive analysis method of regional distribution network according to claim 3, is characterized in that: the calculation formula of described investment cost, operation and maintenance cost, electricity purchase cost, electricity selling cost is:
Figure FDA0002880163890000011
Figure FDA0002880163890000011
 CACC＝CINSfcr C ACC = C INS f cr
Figure FDA0002880163890000012
Figure FDA0002880163890000012
 COM(Pit)＝KOMiPitΔtC OM (P it )=K OMi P it Δt
Figure FDA0002880163890000013
Figure FDA0002880163890000013
Figure FDA0002880163890000014
Figure FDA0002880163890000014
 其中，i表示区域配电网中分布式电源或分布式储能的编号；N表示分布式电源或分布式储能的总数；t表示区域配电网的运行时段；Pit表示编号为i的分布式电源或分布式储能在时段t内的有功功率输出；CDEP-DER表示分布式电源或分布式储能的安装折旧成本；CACC表示分布式电源或分布式储能的安装成本年平均费用；Pr表示分布式电源或分布式储能的额定功率；fcf表示分布式电源或分布式储能的容量因子；CINS表示分布式电源或分布式储能的安装成本；fcr表示分布式电源或分布式储能的资本回收系数；d表示利率或折旧率；L表示分布式电源或分布式储能的寿命；COM表示分布式电源或分布式储能的运维管理成本；KOM表示分布式电源或分布式储能的运维管理系数；Δt表示优化的时间间隔；CPEt表示区域配电网购电的支出；ISEt表示区域配电网售电的收益；Cpt表示区域配电网购电时的电价；Cst表示区域配电网售电时的电价；Pgridt表示区域配电网与系统间的交互功率，购电时其值为正，售电时其值为负。Among them, i represents the number of distributed power sources or distributed energy storage in the regional distribution network; N represents the total number of distributed power sources or distributed energy storage; t represents the operating period of the regional distribution network; P it represents the number of i Active power output of distributed power generation or distributed energy storage in period t; C DEP-DER represents the installation depreciation cost of distributed power generation or distributed energy storage; C ACC represents the installation cost of distributed power generation or distributed energy storage year Average cost; P r represents the rated power of DG or ESS; f cf represents the capacity factor of DG or ESS; C INS represents the installation cost of DG or ESS; f cr Represents the capital recovery coefficient of distributed power generation or distributed energy storage; d represents interest rate or depreciation rate; L represents the life of distributed power generation or distributed energy storage; C OM represents the operation and maintenance management cost of distributed power generation or distributed energy storage ; K OM represents the operation and maintenance management coefficient of distributed power generation or distributed energy storage; Δt represents the time interval for optimization; C PEt represents the expenditure of electricity purchase in the regional distribution network; I SEt represents the income of electricity sales in the regional distribution network; C pt Represents the electricity price when the regional distribution network purchases electricity; C st represents the electricity price when the regional distribution network sells electricity; P gridt represents the interactive power between the regional distribution network and the system, and its value is positive when purchasing electricity, and its value when selling electricity is negative. 5.根据权利要求3所述的一种区域配电网综合分析方法，其特征在于：所述污染物减排量的计算公式为：5. A kind of comprehensive analysis method of regional distribution network according to claim 3, is characterized in that: the calculation formula of described pollutant emission reduction is:
Figure FDA0002880163890000021
Figure FDA0002880163890000021
 其中，CENV为区域配电网的污染物排放治理成本；k为所排放污染物的类型编号；M为所计及的系统运行所排放污染物类型总数；βk为治理污染物k所需消耗的费用系数；Among them, C ENV is the pollutant emission control cost of the regional distribution network; k is the type number of the pollutants discharged; M is the total number of types of pollutants discharged by the considered system operation; β k is the required amount of pollutants k. Consumption cost factor; α*k为不同电能生产方式所对应的各种污染物排放系数。α*k is the emission coefficient of various pollutants corresponding to different electric energy production methods. 6.根据权利要求3所述的一种区域配电网综合分析方法，其特征在于：所述区域配电网的线损率和负荷缺电率的计算公式为：6. The comprehensive analysis method of a regional distribution network according to claim 3, wherein the calculation formula of the line loss rate and the load power shortage rate of the regional distribution network is:
Figure FDA0002880163890000022
Figure FDA0002880163890000022
Figure FDA0002880163890000023
Figure FDA0002880163890000023
Figure FDA0002880163890000024
Figure FDA0002880163890000024
Figure FDA0002880163890000025
Figure FDA0002880163890000025
 其中，γavg：区域配电网的线损率；J：区域配电网的辐射线路条数；ΔPj：第j条线路的线损；Pj：第j条线路的负荷；δLPSP：负荷缺电率；t0：初始时刻；T：综合分析周期；
Figure FDA0002880163890000026
负荷缺电量取值；Pload(t)：t时刻系统负荷需求；QLPS(t)：负荷缺电量计算值。Among them, γ avg : the line loss rate of the regional distribution network; J: the number of radiating lines in the regional distribution network; ΔP j : the line loss of the jth line; P j : the load of the jth line; δ LPSP : Load power shortage rate; t 0 : initial time; T: comprehensive analysis period;
Figure FDA0002880163890000026
The value of the power shortage of the load; P load (t): the system load demand at time t; Q LPS (t): the calculated value of the power shortage of the load. 7.根据权利要求1所述的一种区域配电网综合分析方法，其特征在于，所述预设的权重系数的获取方法包括：7. The comprehensive analysis method for a regional distribution network according to claim 1, wherein the method for obtaining the preset weight coefficient comprises: 利用层次分析法计算各分析指标的权重系数。The weight coefficient of each analysis index is calculated by using the analytic hierarchy process. 8.一种区域配电网综合分析装置，其特征在于，包括：8. A comprehensive analysis device for a regional distribution network, characterized in that, comprising: 获取单元，用于获取预设的区域配电网综合分析模型，所述区域配电网综合分析模型包括目标层、准则层和分析指标计算层；an obtaining unit, configured to obtain a preset comprehensive analysis model of the regional distribution network, where the comprehensive analysis model of the regional distribution network includes a target layer, a criterion layer and an analysis index calculation layer; 第一计算单元，用于将若干个待分析的区域配电网案例输入至所述区域配电网综合分析模型，针对各待分析的区域配电网案例，所述目标层基于区域配电网案例生成综合分析目标；所述准则层基于综合分析目标生成若干个分析指标；所述分析指标计算层针对各分析指标分别计算出对应的指标值；The first calculation unit is used to input several cases of regional distribution network to be analyzed into the comprehensive analysis model of regional distribution network, and for each case of regional distribution network to be analyzed, the target layer is based on the regional distribution network The case generates a comprehensive analysis target; the criterion layer generates several analysis indicators based on the comprehensive analysis target; the analysis indicator calculation layer calculates corresponding indicator values for each analysis indicator respectively; 第二计算单元，用于基于预设的权重系数，以及与各待分析的区域配电网案例对应的各指标值，计算出各待分析的区域配电网案例的综合权重；The second calculation unit is configured to calculate the comprehensive weight of each regional distribution network case to be analyzed based on the preset weight coefficient and each index value corresponding to each regional distribution network case to be analyzed; 分析单元，用于筛选出综合权重最大的区域配电网案例作为最优区域配电网案例，完成区域配电网综合分析。The analysis unit is used to screen out the regional distribution network case with the largest comprehensive weight as the optimal regional distribution network case to complete the comprehensive analysis of the regional distribution network. 9.一种区域配电网综合分析系统，其特征在于：包括存储介质和处理器；9. A comprehensive analysis system for regional distribution network, characterized in that: comprising a storage medium and a processor; 所述存储介质用于存储指令；the storage medium is used for storing instructions; 所述处理器用于根据所述指令进行操作以执行根据权利要求1～7中任一项所述方法的步骤。The processor is adapted to operate in accordance with the instructions to perform the steps of the method according to any of claims 1-7.
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