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AC and DC power distribution network power supply mode evaluation method

A technology of power supply mode and evaluation method, which is applied in the direction of instruments, data processing applications, calculations, etc.

Inactive Publication Date: 2016-07-13
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

There is no comprehensive analysis and evaluation of AC distribution network, DC distribution network and AC-DC hybrid distribution network with distributed power generation and energy storage devices from different perspectives of AC and DC distribution networks.

Method used

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  • AC and DC power distribution network power supply mode evaluation method
  • AC and DC power distribution network power supply mode evaluation method
  • AC and DC power distribution network power supply mode evaluation method

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Experimental program
Comparison scheme
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Embodiment

[0248] Typical distribution network power supply mode established by the present invention ( Figure 1-Figure 5 ) is the evaluation object. The distribution network load value adopts the AC, DC and AC-DC hybrid distribution network load types in Table 1.

[0249] Table 1 AC, DC and AC-DC hybrid distribution network load types

[0250]

[0251] The values ​​of each index in the index system obtained through PSCAD simulation are shown in Table 2. The subjective weights of each index are given by experts, the objective weights are entropy weights, and the comprehensive weights are weighted by subjective weights and objective weights each accounting for 0.5. The results are shown in Table 3 shown. Table 2 AC-DC hybrid simulation index values

[0252]

[0253]

[0254]

[0255]

[0256] Table 3 Subjective weight of AC and DC hybrid simulation indicators

[0257]

[0258]

[0259] Bringing the comprehensive weight into the triangular membership function, the...

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Abstract

The invention relates to an AC and DC power distribution network power supply mode and an evaluation method. According to features of the AC and DC power distribution network, a typical AC and DC power distribution network topology structure is built, evaluation indexes are built respectively from five aspects of technical benefits, economic benefits, social benefits, environmental benefits and the practicality, an entropy weight fuzzy comprehensive evaluation method is then adopted, and a relative superiority and inferiority rank for the typical AC and DC power distribution network power supply mode is obtained according to the evaluation indexes. The method comprises the following steps: (1) a network topology in the typical power distribution network power supply mode is built; (2) an AC and DC hybrid power distribution network evaluation index system is built; and (3) a fuzzy entropy weight evaluation method is adopted to evaluate the typical power supply mode. Compared with the prior art, the method of the invention has the following advantages that an AC and DC power distribution network design and evaluation method for the system is provided, and effective guidance is provided for transformation of the existing distribution network and planning and design of a future AC and DC power distribution network.

Description

technical field [0001] The invention relates to an AC-DC distribution network power supply mode and an evaluation method. According to the characteristics of AC-DC distribution network, a typical AC-DC distribution network topology structure is established, and evaluation indicators are established from five aspects: technical benefit, economic benefit, social benefit, environmental protection benefit and practicability, and then adopts the fuzzy method based on entropy weight According to the comprehensive evaluation method, the relative pros and cons of typical AC and DC distribution network power supply modes are obtained according to the evaluation indicators. Background technique [0002] With the continuous development of power electronics technology, compared with pure AC distribution network, DC power supply has certain advantages in many aspects, for example, it has high power quality, large transmission capacity, high reliability, simple system structure, and econo...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 王兰香魏文辉林昌年林济铿宋平黄华炜杨选怀武琳田英杰陈亿周书进林春龙马群史立勤秦科源
Owner STATE GRID CORP OF CHINA
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