Active distribution network zoning decentralized voltage control method oriented to intelligent soft switch

A voltage control method and technology of intelligent soft switching, which are applied in the direction of AC network voltage adjustment, circuit device, AC network circuit, etc.

Active Publication Date: 2019-01-04
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +3
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  • Description
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  • Application Information

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Problems solved by technology

[0005] Nowadays, a large number of distributed power sources are connected to the distribution network, which makes the traditional distribution network for...

Method used

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  • Active distribution network zoning decentralized voltage control method oriented to intelligent soft switch
  • Active distribution network zoning decentralized voltage control method oriented to intelligent soft switch
  • Active distribution network zoning decentralized voltage control method oriented to intelligent soft switch

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] A partitioned distributed voltage control method for active distribution network oriented to intelligent soft switching, such as figure 1 shown, including the following steps:

[0036] Step 1. According to the selected active power distribution system, input line parameters, load level, network topology connection relationship, system safety node voltage and branch current limit, distributed power access location and capacity, intelligent soft switch connection Input location, capacity and parameters, initial values ​​of system reference voltage and reference power, voltage power sensitivity threshold.

[0037]Step 2. Use the distributed power access point as the center of each division area of ​​the power grid, and obtain the voltage variation of each node when the distributed power output changes through sensitivity analysis, and judge the division ...

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Abstract

The invention relates to an active distribution network zoning decentralized voltage control method oriented to intelligent soft switch, includes the following steps: according to the structure and parameters of the selected active distribution system, taking the access point of the distributed generation as the center of each division area of the power network, and obtaining the voltage variationof each node when the output of the distributed generation changes through sensitivity analysis; The centralized voltage control model of active distribution network oriented to intelligent soft-switching is established. An intelligent soft-switching oriented decentralized voltage control model for active distribution network is established. The decentralized voltage control model of active distribution network is solved by using alternating direction multiplier algorithm until the convergence accuracy is satisfied. The solution is solved. The invention fully considers the influence of the high permeability distributed power supply access, establishes a zoned decentralized voltage control model of an active distribution network oriented to an intelligent soft switch, solves the problem byadopting an alternating direction multiplier method, and obtains a decentralized voltage control strategy of the intelligent soft switch.

Description

technical field [0001] The invention relates to a voltage control method of an active distribution network, in particular to a partitioned distributed voltage control method of an active distribution network oriented to an intelligent soft switch. Background technique [0002] The high attention to energy and the environment makes the development of distribution networks face new pressures and challenges, and these pressures and challenges are also important opportunities to promote the development of traditional distribution networks to active distribution networks. In recent years, the increasing penetration rate of distributed generation (DG), including photovoltaic (PV) and wind turbines, has made the active distribution network face a series of new problems, such as bidirectional power flow, voltage over-limit, Network congestion, etc., in which the voltage limit is particularly prominent. In the traditional power distribution system, its adjustment methods are limited...

Claims

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Application Information

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IPC IPC(8): H02J3/12
CPCH02J3/12H02J2203/20
Inventor 马世乾姚宗强赵长伟杨得博曹涛张慧颖刘春玲杨勇志杨智刘伟王成山冀浩然李鹏李国栋王旭东崇志强郭悦丁一
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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