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Active power distribution network distributed power supply partition in-situ voltage control strategy setting method

A distributed power supply and voltage control technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of heavy computing burden and large number of connections

Inactive Publication Date: 2019-05-07
TIANJIN UNIV
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Problems solved by technology

Since the number of distributed power sources such as photovoltaics and wind turbines is often large, formulating a local control strategy for each distributed power source will bring a heavy computational burden

Method used

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  • Active power distribution network distributed power supply partition in-situ voltage control strategy setting method
  • Active power distribution network distributed power supply partition in-situ voltage control strategy setting method
  • Active power distribution network distributed power supply partition in-situ voltage control strategy setting method

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Embodiment Construction

[0070] The method for setting the local voltage control strategy of the active distribution network distributed power subregions of the present invention will be described in detail below in combination with the embodiments and the accompanying drawings.

[0071] like figure 1 As shown, the local voltage control strategy setting method of the active distribution network distributed power supply partition of the present invention includes the following steps:

[0072] 1) According to the selected active distribution network, input the system structure and parameters, including: line parameters, load level, network topology connection relationship, distributed power access location, type, capacity and parameters, distributed power and load Daily operation curve, system operating voltage constraint and branch current limit, initial value of system reference voltage and reference power;

[0073] 2) Calculate the electrical distance matrix formed by the electrical distance between...

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Abstract

An active power distribution network distributed power supply partition in-situ voltage control strategy setting method comprises the steps of: determining a system structure and parameters accordingto a selected active power distribution network; calculating an electrical distance matrix formed by electrical distances between nodes of an active power distribution network; obtaining the optimal partition numbers of the active power distribution network through determination of the size of the feature value of the electrical distance matrix; employing the K-means clustering algorithm to perform clustering partition for the electrical distance matrix to obtain a power distribution network partition result; according to the active power distribution network structure and the parameters, based on the partition result, establishing an active power distribution network distributed power supply partition in-situ voltage control strategy setting model; covering the active power distribution network distributed power supply partition in-situ voltage control strategy setting model to a second-order cone model; employing a mathematical solver for solving the second-order cone programming toperform calculation and solution of the second-order cone model of the active power distribution network distributed power supply partition in-situ voltage control strategy; and outputting a solutionresult. The formulation and the optimization of the distributed power supply in-situ voltage control strategy are simplified.

Description

technical field [0001] The invention relates to a local voltage control strategy setting method of a distributed power supply. In particular, it relates to a local voltage control strategy setting method for distributed power generation partitions in an active distribution network. Background technique [0002] With a large number of distributed power sources connected to the distribution network, especially intermittent distributed power sources such as photovoltaics have strong uncertainties in both time and space, which often leads to feeder power failure during the operation of the distribution network. Large fluctuations, power imbalance between feeders, voltage limit and many other problems. At present, the distributed power generation in the active distribution network mainly adopts two modes of centralized control or local control. The centralized control strategy is based on global information for global optimization. However, as the types of distributed power sou...

Claims

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Application Information

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IPC IPC(8): H02J3/38
Inventor 李鹏简洁王成山冀浩然宋关羽赵金利于浩
Owner TIANJIN UNIV
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