CN107122881B - Comprehensive energy efficiency evaluation system based on power distribution station area - Google Patents
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Abstract
The invention provides a comprehensive energy efficiency evaluation system based on a power distribution station area, which comprises: the comprehensive energy efficiency index module comprises a plurality of index units and an adder; the adder respectively carries out a plurality of times of sequential logic judgment on the qualification rate of each index unit in real time according to the arrangement mode of an arithmetic progression, and the logic judgment of each time is added according to the number of times to obtain the score of each index unit; the index weight calculation module is used for acquiring the weight value of each index unit; and the comprehensive energy efficiency evaluation module is used for calculating the comprehensive energy efficiency of the power distribution station area according to the score of each index unit and the weight value corresponding to the index unit. The comprehensive energy efficiency evaluation system based on the power distribution station area can realize parallel acquisition and real-time processing of various data of the power distribution station area, realizes comprehensive evaluation of the comprehensive energy efficiency of the power distribution station area, and has the advantages of simple evaluation steps, low cost, and visual and reliable results.
Description
Technical Field
The invention relates to the technical field of electricity, in particular to a comprehensive energy efficiency evaluation method and system based on a power distribution station area.
Background
The power distribution area is oriented to users, is a basic unit for ensuring the quality of a power supply terminal and realizing a terminal, is connected with a main grid frame of a power grid, is connected with thousands of households, is internally related to safety production and power grid operation, externally influences high-quality service and brand image, and is an important basis for the development of power supply enterprises. The quality and quantity of the distribution network are comprehensively and rapidly improved, individual differences still exist between different areas, and the distribution network is quite prominent in certain areas. Therefore, a scientific and reasonable comprehensive evaluation system is established to comprehensively monitor the construction work effect of the first-class distribution network, and the method is particularly necessary for determining the short boards and advantages of the distribution network construction in the aspects of regional distribution and service functions and coordinating company resources comprehensively.
The traditional power distribution network evaluation system mainly evaluates the operation reliability of a power grid, the power quality of the tail end of a power consumer, the power operation safety, the construction scale of a distribution network project and the like, cannot integrally reflect the condition of the power distribution network, and has weak significance in guiding the development of the power grid. For example, some power distribution network evaluations only establish evaluation indexes for the utilization rate of power distribution network equipment, mainly consider different load states of a transformer and a power supply line, and do not relate to static indexes reflecting equipment parameters; some power distribution network evaluations are divided and evaluated according to voltage grades, index systems are established for different voltage grades of the power distribution network, but the difference of the structure and the load density of the power distribution network in each region is ignored according to the division of the voltage grades, and the power distribution network evaluations are not comparable; in addition, a power distribution network evaluation system exists, established power distribution network indexes are all dynamic operation indexes, the influence of static indexes on the power distribution network energy efficiency is not considered, consistency analysis is not carried out on the established judgment matrix, and the objectivity of an evaluation result is reduced; some energy efficiency evaluation models are established only for power users, and energy efficiency evaluation models of the power distribution network are not involved; or a comprehensive evaluation index system and a comprehensive evaluation index method for power distribution network planning are provided, and although partial energy efficiency indexes are involved, the comprehensive evaluation index system and the comprehensive evaluation index method are not comprehensive.
Disclosure of Invention
The invention provides a comprehensive energy efficiency evaluation system based on a power distribution area, which is used for comprehensively evaluating the comprehensive energy efficiency of the power distribution area, simplifying the evaluation steps and improving the reliability of the evaluation result.
In order to solve the above problems, the present invention provides a comprehensive energy efficiency evaluation system based on a distribution substation, including: the comprehensive energy efficiency index module comprises a power supply capacity index unit, an operation benefit index unit, an economic benefit index unit and an adder; the adder respectively carries out multiple times of sequential logical judgment on the qualification rates of the power supply capacity index unit, the operation benefit index unit and the economic benefit index unit in real time according to an arrangement mode of an arithmetic progression, the logical judgment of each time is added according to the number of times to obtain the score of each index unit, and the scores of the three index units are output to the comprehensive energy efficiency evaluation module; the index weight calculation module is used for respectively acquiring the weight value of the power supply capacity index unit, the weight value of the operation benefit index unit and the weight value of the economic benefit index unit and outputting all the weight values to the comprehensive energy efficiency evaluation module; and the comprehensive energy efficiency evaluation module is simultaneously connected with the comprehensive energy efficiency index module and the index weight calculation module and used for calculating the comprehensive energy efficiency of the power distribution station area according to the score of each index unit and the weight value corresponding to the index unit.
Preferably, the power supply capability index unit includes a plurality of power supply capability indexes and a qualification rate corresponding to each power supply capability index; the operation benefit index unit comprises a plurality of operation benefit indexes and a qualified rate corresponding to each operation benefit index; the economic benefit index unit comprises a plurality of economic benefit indexes and a qualified rate corresponding to each economic benefit index.
Preferably, the plurality of power supply capacity indexes comprise user voltage qualification rate, distribution transformation voltage qualification rate and power supply consideration; the multiple operation benefit indexes comprise distribution transformation load rate, average power factors and three-phase unbalance degree; the economic benefit indexes comprise line loss rate, unit asset electricity sales amount and power failure loss electricity rate.
Preferably, the user voltage qualified rate comprises a user average voltage qualified rate and a user minimum voltage qualified rate; the distribution transformer load rate comprises a distribution transformer average load rate and a distribution transformer maximum load rate; the three-phase unbalance comprises three-phase current unbalance of the power distribution area and three-phase unbalance overrun of the power distribution area; the line loss rate comprises a theoretical line loss rate of a power distribution station area and an actual line loss rate of the power distribution station area.
Preferably, the comprehensive energy efficiency evaluation module further includes a calculation unit, and the calculation unit is configured to multiply each index unit by a weight value corresponding to the index unit, and add the results of the three multiplications to obtain a score of the comprehensive energy efficiency of the power distribution area.
The comprehensive energy efficiency evaluation system based on the power distribution areas can realize the parallel acquisition of various data of a plurality of power distribution areas, the acquired data are processed in real time according to the set program, the comprehensive energy efficiency of the researched power distribution areas can be obtained, the whole evaluation process is dynamic, the comprehensive evaluation of the comprehensive energy efficiency of the power distribution areas is realized, the evaluation steps are simple, the results are simple, intuitive and reliable, the problems existing in the power distribution areas can be found in time, the specific direction is indicated for effectively improving the comprehensive energy efficiency of the power distribution areas, and the empirical judgment and blind experiments are avoided. Meanwhile, the equipment used by the whole measuring system is simple and cheap, and the system has a simple structure, and is convenient to popularize and widely apply.
Drawings
Fig. 1 is a schematic structural diagram of a comprehensive energy efficiency evaluation system based on a power distribution station area according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of an integrated energy efficiency index module in the integrated energy efficiency evaluation system based on the power distribution station area according to the embodiment of the present invention.
Detailed Description
The following describes in detail a specific embodiment of the comprehensive energy efficiency evaluation system based on a distribution substation area according to the present invention with reference to the accompanying drawings.
The present embodiment provides a comprehensive energy efficiency evaluation system based on a power distribution grid, fig. 1 is a schematic structural diagram of the comprehensive energy efficiency evaluation system based on the power distribution grid according to the present embodiment, and fig. 2 is a schematic structural diagram of a comprehensive energy efficiency index module in the comprehensive energy efficiency evaluation system based on the power distribution grid according to the present embodiment.
As shown in fig. 1 and 2, the comprehensive energy efficiency evaluation system based on a distribution substation provided in the present embodiment includes: the comprehensive energy efficiency evaluation system comprises a comprehensive energy efficiency index module 11, an index weight calculation module 12 and a comprehensive energy efficiency evaluation module 13. The comprehensive energy efficiency index module 11 includes a power supply capacity index unit 111, an operation benefit index unit 112, an economic benefit index unit 113, and an adder 114, where the power supply capacity index unit 111, the operation benefit index unit 112, and the economic benefit index unit 113 are all connected to the adder 114. The adder 114 performs multiple sequential logical judgments on the qualification rates of the power supply capability index unit 111, the operational benefit index unit 112, and the economic benefit index unit 113 according to an arrangement mode of an arithmetic progression, adds the logical judgments of each time according to the number of times to obtain a score of each index unit, and outputs the scores of the power supply capability index unit 111, the operational benefit index unit 112, and the economic benefit index unit 113 to the comprehensive energy efficiency evaluation module 13. The index weight calculation module 12 is configured to obtain a weight value of the power supply capability index unit 111, a weight value of the operation benefit index unit 112, and a weight value of the economic benefit index unit 113, and output all the weight values to the comprehensive energy efficiency evaluation module 13. The method for obtaining the weight value of each index unit may be to level according to the importance degree of each index unit and a tree structure according to the actual judgment requirement, and obtain the weight value of each index unit according to the level of the level. This is not limited in this embodiment, and those skilled in the art can select the weight value according to actual needs, and only need to ensure that the sum of all weight values is 1. The comprehensive energy efficiency evaluation module 13 is connected to the comprehensive energy efficiency index module 11 and the index weight calculation module 12, and is configured to calculate the comprehensive energy efficiency of the power distribution area according to the score of each index unit and the weight value corresponding to the score.
In order to improve comprehensiveness and reliability of the evaluation result, preferably, the power supply capability index unit 111 includes a plurality of power supply capability indexes and a yield corresponding to each power supply capability index; the operational benefit indicator unit 112 includes a plurality of operational benefit indicators and a pass rate corresponding to each operational benefit indicator; the economic benefit index unit 113 includes a plurality of economic benefit indexes and a pass rate corresponding to each economic benefit index. Wherein the plurality of power supply capability indicators include a user voltage qualification rate, a distribution transformer voltage qualification rate, and power supply considerations; the multiple operation benefit indexes comprise distribution transformation load rate, average power factors and three-phase unbalance degree; the economic benefit indexes comprise line loss rate, unit asset electricity sales amount and power failure loss electricity rate. More preferably, the user voltage qualified rate comprises a user average voltage qualified rate and a user minimum voltage qualified rate; the distribution transformer load rate comprises a distribution transformer average load rate and a distribution transformer maximum load rate; the three-phase unbalance comprises three-phase current unbalance of the power distribution area and three-phase unbalance overrun of the power distribution area; the line loss rate comprises a theoretical line loss rate of a power distribution station area and an actual line loss rate of the power distribution station area. By adopting the structure, the comprehensive energy efficiency index module 11 acquires the qualification rate conditions of the indexes in each index unit in real time, so that the real-time and dynamic evaluation of the comprehensive energy efficiency of the power distribution station area can be realized, and the reliability of the evaluation result is further improved.
In order to simplify the overall evaluation steps and reduce the cost, it is preferable that the comprehensive energy efficiency evaluation module 13 further includes a calculation unit, and the calculation unit is configured to multiply each index unit by its corresponding weight value, and add the results of the three multiplications as a score of the comprehensive energy efficiency of the power distribution grid.
The comprehensive energy efficiency evaluation system based on the power distribution areas can realize the parallel acquisition of various data of a plurality of power distribution areas, the acquired data are processed in real time according to the set program, the comprehensive energy efficiency of the researched power distribution areas can be obtained, the whole evaluation process is dynamic, the comprehensive evaluation of the comprehensive energy efficiency of the power distribution areas is realized, the evaluation steps are simple, the results are simple, intuitive and reliable, the problems existing in the power distribution areas can be found in time, the specific direction is indicated for effectively improving the comprehensive energy efficiency of the power distribution areas, and the empirical judgment and blind experiments are avoided. Meanwhile, the equipment used by the whole measuring system is simple and cheap, and the system has a simple structure, and is convenient to popularize and widely apply.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The utility model provides a synthesize energy efficiency evaluation system based on distribution station district which characterized in that includes:
the comprehensive energy efficiency index module comprises a power supply capacity index unit, an operation benefit index unit, an economic benefit index unit and an adder; the adder respectively carries out multiple times of sequential logical judgment on the qualification rates of the power supply capacity index unit, the operation benefit index unit and the economic benefit index unit in real time according to an arrangement mode of an arithmetic progression, the logical judgment of each time is added according to the number of times to obtain the score of each index unit, and the scores of the three index units are output to the comprehensive energy efficiency evaluation module;
the index weight calculation module is used for respectively acquiring the weight value of the power supply capacity index unit, the weight value of the operation benefit index unit and the weight value of the economic benefit index unit and outputting all the weight values to the comprehensive energy efficiency evaluation module;
the comprehensive energy efficiency evaluation module is simultaneously connected with the comprehensive energy efficiency index module and the index weight calculation module; the comprehensive energy efficiency evaluation module further comprises a calculation unit, wherein the calculation unit is used for multiplying each index unit by the corresponding weight value of each index unit, and adding the results of the three multiplications to obtain a score of the comprehensive energy efficiency of the power distribution area;
the power supply capacity index unit comprises a plurality of power supply capacity indexes and a qualification rate corresponding to each power supply capacity index; the operation benefit index unit comprises a plurality of operation benefit indexes and a qualified rate corresponding to each operation benefit index; the economic benefit index unit comprises a plurality of economic benefit indexes and a qualified rate corresponding to each economic benefit index.
2. The power distribution bay-based integrated energy efficiency evaluation system of claim 1, wherein the plurality of power supply capability indicators comprise a user voltage qualification rate, a distribution voltage qualification rate, and a power supply consideration; the multiple operation benefit indexes comprise distribution transformation load rate, average power factors and three-phase unbalance degree; the economic benefit indexes comprise line loss rate, unit asset electricity sales amount and power failure loss electricity rate.
3. The comprehensive energy efficiency evaluation system based on the power distribution substation according to claim 2, wherein the user voltage qualification rate comprises a user average voltage qualification rate and a user minimum voltage qualification rate; the distribution transformer load rate comprises a distribution transformer average load rate and a distribution transformer maximum load rate; the three-phase unbalance comprises three-phase current unbalance of the power distribution area and three-phase unbalance overrun of the power distribution area; the line loss rate comprises a theoretical line loss rate of a power distribution station area and an actual line loss rate of the power distribution station area.
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| CN108733926B (en) * | 2018-05-22 | 2020-07-24 | 大连理工大学 | Energy efficiency level evaluation method for wind power installation vessel |
| CN109740872A (en) * | 2018-12-18 | 2019-05-10 | 国网山西省电力公司长治供电公司 | The diagnostic method and system of a kind of area's operating status |
| CN112421644B (en) * | 2020-11-12 | 2023-06-16 | 珠海许继芝电网自动化有限公司 | Low-voltage load access method for power distribution Internet of things |
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| CN106096849A (en) * | 2016-06-17 | 2016-11-09 | 国网江苏省电力公司连云港供电公司 | Distributed photovoltaic accesses electric network synthetic and evaluates system and method |
| WO2017027682A1 (en) * | 2015-08-11 | 2017-02-16 | Delta Energy & Communications, Inc. | Enhanced reality system for visualizing, evaluating, diagnosing, optimizing and servicing smart grids and incorporated components |
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| WO2017027682A1 (en) * | 2015-08-11 | 2017-02-16 | Delta Energy & Communications, Inc. | Enhanced reality system for visualizing, evaluating, diagnosing, optimizing and servicing smart grids and incorporated components |
| CN106096849A (en) * | 2016-06-17 | 2016-11-09 | 国网江苏省电力公司连云港供电公司 | Distributed photovoltaic accesses electric network synthetic and evaluates system and method |
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