Coordination evaluation method and system based on high and medium voltage power distribution network grid structure

A technology of high and medium voltage distribution network and grid structure, applied in information technology support systems, instruments, data processing applications, etc., can solve problems such as difficulty in taking into account power supply reliability and economy, and incoordination between upper and lower levels of distribution network, etc. To achieve the effect of realizing the optimality of the whole

Active Publication Date: 2021-11-02
GUIZHOU POWER GRID CO LTD
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Problems solved by technology

[0003] Traditional distribution network planning mostly separates the high-voltage and medium-voltage distribution networks, which may lead to incoordination between the upper and lower levels of the distribution network; and the so-called high-reliability distribution network planning tends to adopt the "strong-strong "The cooperation mode of high and medium voltage distribution network is difficult to take into account the reliability and economy of power supply

Method used

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  • Coordination evaluation method and system based on high and medium voltage power distribution network grid structure
  • Coordination evaluation method and system based on high and medium voltage power distribution network grid structure
  • Coordination evaluation method and system based on high and medium voltage power distribution network grid structure

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Embodiment 1

[0052] The traditional distribution network planning is to plan the high-voltage and medium-voltage distribution networks separately, resulting in incoordination between the upper and lower levels of the distribution network, and the high-reliability distribution network planning tends to adopt strong-strong medium-voltage distribution networks With the mode, it is difficult to take into account the power supply reliability and economy.

[0053] refer to figure 1 , figure 2 with image 3 , which is the first embodiment of the present invention, this embodiment provides a coordination evaluation method based on high and medium voltage distribution grid structure, including:

[0054] S1: Use the power supply safety standards of the urban power grid to analyze the power supply safety level of the high and medium voltage grid structure under the N-1 and N-1-1 outage scenarios under the corresponding group load level from the high voltage level and the medium voltage level. Wha...

Embodiment 2

[0117] refer to Figure 4 , is the second embodiment of the present invention. This embodiment is different from the first embodiment in that it provides a coordination evaluation system based on high and medium voltage distribution grid structure, including:

[0118] The data processing center module 100 is used to process various costs and reliability indicators, and it includes a calculation unit 101 and a storage unit 102. The calculation unit 101 is used to calculate the annual cost of the high and medium voltage distribution network and the annual power failure loss cost of the high and medium voltage, and the storage unit 102 is used to save calculation results and analysis results.

[0119] The analysis module 200 is connected with the data processing center module 100, and is used to receive the calculation results of the calculation unit 101, compare various combination schemes of the grid structure of the high and medium voltage distribution network, analyze the pow...

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Abstract

The invention discloses a coordination evaluation method and system based on high and medium voltage power distribution network grid structures. The method comprises the following steps: analyzing the power supply safety levels of the high and medium voltage grid structures in N-1 and N-1-1 outage scenes under corresponding group load levels from a high-voltage level and a medium-voltage level through employing the power supply safety standard of an urban power grid; calculating a reliability index of the high-and-medium-voltage power distribution network and comprehensive annual cost of the high-and-medium-voltage grid structure by using a coordinated calculation strategy; and evaluating various high and medium voltage power distribution network grid structure combination schemes by using the power supply safety level, the reliability index and the comprehensive cost, and judging the superiority of the various combination schemes. According to the method, coordinated optimization of the grid structure of the high-and-medium-voltage power distribution network can be realized, and the investment of capital cost is reduced while the power supply quality is improved, so that the overall optimality of planning and transformation of the high-and-medium-voltage power distribution network is realized.

Description

technical field [0001] The invention relates to the technical field of high and medium voltage distribution network planning, in particular to a coordination evaluation method and system based on the grid structure of high and medium voltage distribution networks. Background technique [0002] The purpose of distribution network planning is to guide the construction and transformation of distribution network, solve the current problems of distribution network, meet customer needs, reduce operation and maintenance work, and improve customer satisfaction. Distribution network planning and third-party customer satisfaction, customer years There are direct and indirect links among average power outage time, automation coverage rate, transferable power supply rate, line heavy overload rate, power safety incident probability, typical connection rate, project implementability, old equipment lines, and abnormal average line loss. [0003] Traditional distribution network planning mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q50/06G06Q10/06393Y04S10/50
Inventor 薛毅高华罗宁李丽娟张彦贺墨琳陈露东徐常王杰刘金森李应林张裕卢嗣斌
Owner GUIZHOU POWER GRID CO LTD
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