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Active power distribution network pressure reactive power control method based on intelligent soft normally open point

A technology of voltage reactive power control and intelligent soft switching, which is applied to AC networks, circuit devices, and AC network circuits with the same frequency from different sources, and can solve problems such as voltage fluctuations

Active Publication Date: 2016-06-29
TIANJIN UNIV
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a solution to the voltage fluctuation problem of the active distribution network, with the minimum sum of the voltage deviations of each node of the distribution system as the objective function, and the application of intelligent soft switches to solve the problem of voltage fluctuations in the active distribution network. Active distribution network voltage and reactive power control method based on intelligent soft switching for power control problem

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  • Active power distribution network pressure reactive power control method based on intelligent soft normally open point
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  • Active power distribution network pressure reactive power control method based on intelligent soft normally open point

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[0066] For this example, first enter figure 1 Given the impedance value of the line components in the IEEE33 node system, the active power and reactive power of the load components, see Table 1 and Table 2 for detailed parameters; then set the access positions of the five wind turbines as nodes 10, 16, and 17 , 30, 33, the access capacities are 1000kVA, 600kVA, 400kVA, 400kVA, 600kVA respectively, the access positions of the three photovoltaic systems are nodes 7, 13, 27, the access capacities are 500kVA, 300kVA, 400kVA respectively, and the power factors are average is 1.0; set a group of SNOPs connected between nodes 18 and 33 of the distribution network, and stipulate that the power flow from node 33 to node 18 is the positive direction, the capacity of both converters is 2500kVA, and the upper limit of reactive power output Both are 2000kVar, and the loss coefficient is both 0.01; finally set the reference voltage of the system to 12.66kV, and the reference power to 1MVA. ...

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Abstract

The invention provides an active power distribution network pressure reactive power control method based on an intelligent soft normally open point. The method comprises steps of according to a selected power distribution system, inputting initial values of circuit parameters, load levels, system operation voltage levels, branch current restraints, an accessing position, the type, capacity and parameters of a distributed generator, an accessing position, capacity and parameters of the intelligent soft normally open point, and standard voltage and standard power of the system; according to the provided power distribution system parameters, establishing an intelligent soft normally open point-based mathematic model for solving an active power distribution network pressure reactive power control problem; solving the obtained mathematic model by adopting an interior point method; and outputting solving results. According to the invention, via the IPOPT optimization algorithm, an active power transmission value and a reactive power compensation value of an SNOP are determined; and the adopted intelligent soft normally open point can flexibly controlling power, so when the intelligent soft normally open point is applied for improving voltage levels of an active power distribution network, quite favorable effects can be obtained.

Description

technical field [0001] The invention relates to a method for controlling voltage and reactive power of an active distribution network, in particular to a method for controlling voltage and reactive power of an active distribution network based on an intelligent soft switch. Background technique [0002] While a large number of distributed generators (DistributedGenerator, DG) are connected to continuously meet the energy demand of the grid, due to the uncertainty of its output and the negative correlation with the load, it often causes voltage problems in the distribution network. Distribution network voltage and reactive power control aims to use the reactive power compensation equipment of the distribution network to determine a certain future value by adjusting various reactive power compensation equipment and other means that can change the reactive power flow of the system under the premise of satisfying the system operation constraints. The operating status of the dist...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06H02J3/06
CPCG06Q50/06H02J3/06H02J2203/20
Inventor 赵金利李雨薇李鹏宋关羽王成山冀浩然
Owner TIANJIN UNIV
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