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Intelligent soft switching voltage control method for active power distribution network based on chance-constrained programming

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., can solve the problems of intelligent soft switching voltage control strategy and the like

Active Publication Date: 2019-04-26
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +3
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, and propose an intelligent soft-switching voltage control method for active dis

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  • Intelligent soft switching voltage control method for active power distribution network based on chance-constrained programming
  • Intelligent soft switching voltage control method for active power distribution network based on chance-constrained programming
  • Intelligent soft switching voltage control method for active power distribution network based on chance-constrained programming

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Embodiment Construction

[0091] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0092] An intelligent soft-switching voltage control method for active distribution networks based on chance constrained programming, such as figure 1 shown, including the following steps:

[0093] Step 1. According to the selected power distribution system, input the branch parameters, load level, historical data of distributed power generation output such as fans and photovoltaics in the area where the distribution network is located, network topology connection relationship, system operating voltage level limit and branch current Limitation, intelligent soft switch access position, capacity and loss coefficient, reference voltage and reference power initial value;

[0094] Step 2. Based on the historical data of distributed power generation output such as wind turbines and photovoltaics in the area where the distribution network is located in s...

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Abstract

The invention relates to an intelligent soft-switching voltage control method for an active power distribution network based on chance-constrained programming. According to the technical features, theintelligent soft-switching voltage control method comprises the following steps that step 1, branch parameters are separately input according to a selected power distribution system; step 2, a k-means clustering algorithm is used for cluster analysis, and typical scenes for describing the uncertainty of distributed power output and the probability of occurrence of each scene are obtained; step 3,an intelligent soft switching voltage control model of the active power distribution network based on chance-constrained programming is established; step 4, auxiliary variables are introduced for quadratic programming model transformation; step 5, a mixed integer quadratic programming algorithm is used for solving; and step 6, the results of the step 5 are output. The intelligent soft-switching voltage control method solves the problem of intelligent soft switching voltage control strategies under different confidence levels, significantly reduces the number of voltage out-of-limit scenes, and comprehensively improves the operation level of the power distribution network.

Description

technical field [0001] The invention belongs to the technical field of active distribution network voltage control, and relates to an intelligent soft-switching voltage control method for an active distribution network, in particular to an intelligent soft-switching voltage control method for an active distribution network based on chance constraint programming. Background technique [0002] As the penetration rate of distributed energy in the distribution network continues to increase, a series of problems such as two-way power flow and voltage over-limit have been brought about. Energy flows become more complex. The power electronic device represented by the intelligent soft switch (soft open point, SOP) has received extensive attention due to its powerful power flow control capability. Intelligent soft switch is a new type of intelligent power distribution device that replaces traditional tie switches. The application of intelligent soft switches will greatly improve the...

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Application Information

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IPC IPC(8): H02J3/12
CPCH02J3/12H02J2203/20Y02E40/30Y02E10/56
Inventor 姚宗强赵长伟马世乾杨得博赵风松张慧颖王旭东崇志强于建成徐科周长新姚程尚学军李庆镭刘伟王成山李鹏宋关羽吴磊郭悦丁一崔柏杨占民赵村张洋项添春李国栋戚艳王天昊
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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