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Distributed subgradient algorithm-based optimal control method for reactive power of power system

A power system and optimal control technology, applied in reactive power compensation, electrical components, circuit devices, etc., can solve problems such as increasing the complexity of optimal reactive power control

Active Publication Date: 2016-08-17
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

The large-scale application of distributed generators in smart grids increases the complexity of optimal reactive power control

Method used

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  • Distributed subgradient algorithm-based optimal control method for reactive power of power system
  • Distributed subgradient algorithm-based optimal control method for reactive power of power system
  • Distributed subgradient algorithm-based optimal control method for reactive power of power system

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Embodiment Construction

[0042]Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0043] An optimal control method for power system reactive power based on distributed subgradient algorithm, such as figure 1 As shown, it specifically includes the following steps:

[0044] Step 1: Aiming at minimizing active power loss and improving voltage distribution, establish a reactive power optimization model of the power system, and give the initial line parameters and initial node parameters of the power system.

[0045] The reactive power optimization model of the power system is:

[0046] f=W 1 P L +W 2 D. v +W 3 C T

...

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Abstract

The invention provides a distributed subgradient algorithm-based optimal control method for a reactive power of a power system. Reactive power distribution of the power system is optimized and determined by a distributed subgradient algorithm; and distribution control on the reactive power is executed according to an optimal solution. By the distributed subgradient algorithm-based optimal control method for the reactive power of the power system, the probability of a single-point failure under centralized control and distributed control can be reduced; the loss of the power system is reduced when the running state of the power system is improved; and the optimal control method can be flexibly applied to the power systems with different scales and topological structures and is not disturbed by certain specific errors.

Description

technical field [0001] The invention belongs to the field of power system optimization dispatching, in particular to a power system reactive power optimal control method based on a distributed subgradient algorithm. Background technique [0002] With the increasing penetration of renewable energy and the increasing number of reactive power devices in the power network, how to improve the existing reactive power control strategy to achieve large-scale scheduling of reactive power devices has become a research direction for power workers. [0003] Power system reactive power optimization is an important means to ensure safe and economical operation of the power system, and an effective measure to reduce system active power loss and improve voltage distribution. On the one hand, insufficient reactive power will lead to a decrease in system voltage, which will lead to major accidents such as voltage collapse and system disintegration; on the other hand, excessive reactive power ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16
CPCH02J3/16H02J3/382H02J2203/20Y02E40/30
Inventor 肖亦琛谢俊岳东黄崇鑫翁盛煊解相鹏王晓亮
Owner NANJING UNIV OF POSTS & TELECOMM
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