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Evaluation index algorithm for AC and DC distribution network power supply mode selection

A technology of power supply mode and evaluation index, applied in the direction of AC network circuit, computing, electrical components, etc.

Inactive Publication Date: 2016-07-13
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, the traditional distribution network structure and power distribution (supply) methods are increasingly unable to meet the needs of the rapidly developing economy and society to be more environmentally friendly, safer and more reliable, more economical, support distributed power access, and user Two-way interaction with the grid and many other requirements

Method used

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  • Evaluation index algorithm for AC and DC distribution network power supply mode selection
  • Evaluation index algorithm for AC and DC distribution network power supply mode selection
  • Evaluation index algorithm for AC and DC distribution network power supply mode selection

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Embodiment Construction

[0151] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0152] Use the indicator system for Figure 1-Figure 5 The typical AC-DC distribution network power supply mode, the load nature in each mode is divided into five categories: medium voltage DC load, medium voltage AC load, low voltage A load, low voltage B load and low voltage C load. Among them, medium voltage DC loads are industrial loads with high requirements on power quality; medium voltage AC loads are general industrial loads; low voltage Class A loads are low voltage DC loads, such as computers, refrigerators, etc.; low voltage Class B loads are low voltage AC loads, such as AC motors, etc.; low-voltage Class C loads are purely resistive loads, such as incandescent lamps.

[0153] figure 1 The radial AC distribution network shown is a commonly used power supply mode. The DC load needs to be rectified by the rectifier device before ...

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Abstract

The invention relates to the field of power supply of the distribution network, and particularly relates to an evaluation index algorithm for AC and DC distribution network power supply mode selection, so as to realize selection of the best power supply mode. The algorithm comprises the following steps: 1, a technicality evaluation index system is built; 2, a power supply reliability evaluation system is built; 3, an economy evaluation index system is built; 4, a sociality evaluation index system is built; and 5, an environmental protection evaluation index system is built. Compared with the prior art, the algorithm of the invention has the following advantages that the built index systems cover technicality, power supply reliability, economy, sociality and environmental protection, and various performances of the AC and DC power supply network can be reflected thoroughly and objectively; and the built index systems are combined with the existing evaluation method for selection of the AC and DC distribution network power supply mode, and the practical engineering value is high.

Description

technical field [0001] The invention relates to the field of power supply of distribution network, in particular to an evaluation index algorithm for selection of power supply mode of AC and DC distribution network, so as to realize optimal power supply mode selection. Background technique [0002] With the rapid development and wide application of new energy, new materials, information technology and power electronics technology, users' requirements for power consumption, power quality and power supply reliability continue to increase, and the existing AC distribution network will face distributed new energy. (Power supply) access, diversification of load and power demand, complex coordination and control of power flow balance, and huge challenges in terms of stability, efficiency, and economy of power supply. Due to the separation of urban planning and power system planning in China for decades, a distribution network structure that is incompatible with the load developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06Q50/06
CPCG06Q50/06H02J3/00H02J2203/20Y04S10/50
Inventor 徐正清杨选怀林昌年魏文辉林济铿宋平黄华炜武琳田英杰陈亿高峰魏建功马群史立勤王兰香
Owner STATE GRID CORP OF CHINA
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