Electromechanical transient model of distributed power flow controller and electromechanical transient simulation method

A technology of power flow controller and transient model, which is applied to AC network circuits, circuit devices, and AC networks with the same frequency from different sources, etc., and can solve the problem of few modeling methods

Active Publication Date: 2017-08-25
STATE GRID CORP OF CHINA +5
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Problems solved by technology

[0005] However, there are relatively few research results related to DPFC topology, control methods, installation methods, etc., and even less research results on modeling methods. In order to study the electromechanical transient characteristics and control effects of DPFC devices, the DPFC electromechanical transient Model research is very necessary

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  • Electromechanical transient model of distributed power flow controller and electromechanical transient simulation method
  • Electromechanical transient model of distributed power flow controller and electromechanical transient simulation method
  • Electromechanical transient model of distributed power flow controller and electromechanical transient simulation method

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[0045] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] An electromechanical transient model of a distributed power flow controller, including:

[0047] The standard test system is used to provide signal input for the distributed power flow controller model; the signal includes: the active power P of the actual operation of the controlled line L and reactive power Q L , the voltage amplitude at the head end of the line V s , the power transmitting terminal node voltage V s The phase angle θ s , the magnitude of the voltage at the receiving terminal node V m and phase angle θ m ;

[0048] The standard test system is a 3-machine 9-node test system;

[0049] DPFC ser...

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Abstract

The invention discloses an electromechanical transient model of a distributed power flow controller and an electromechanical transient simulation method. The electromechanical transient model comprises a standard test system, a DPFC (Distributed Power Flow Controller) series connection side user-defined model and a DPFC parallel connection side user-defined model. When power flow analysis is performed on an electric power system according to a working principle of the distributed power flow controller, injection current of the distributed power flow controller for an electric power network interface node is adjusted by applying an injection current method idea considering three times of harmonic dynamic energy exchange inside, and a function of controlling line power flow and bus voltage is realized. According to the invention, a mathematical model of equivalent current injected into nodes at two ends of a line at series and parallel connection sides of the distributed power flow controller considering three times of harmonic dynamic energy exchange inside is derived, and the mathematical model is applicable to the simulation process of electromechanical transient analysis for the electric power system, thereby providing a method for further studying the performance and characteristics of the DPFC, and providing a model basis for performance analysis for the DPFC.

Description

technical field [0001] The invention relates to power system operation and control technology, in particular to an electromechanical transient model and simulation method of a distributed power flow controller. Background technique [0002] With the development of power system and transmission technology, the level of transmission voltage continues to increase, the distance of transmission continues to increase, the structure of the power grid is becoming more and more complex, and the transmission capacity and demand of the power grid are also increasing. At the same time, the existence of the electromagnetic ring network and the natural distribution of the power flow often make The distribution of power flow in the key transmission sections of the power grid is uneven in normal and after accidents, which limits the overall transmission capacity of the section, resulting in the need to increase transmission channels to improve transmission capacity on the one hand, and the t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/20
Inventor 黄涌赵红生乔立徐秋实唐爱红高梦露陈强金英雷邵云露熊杰郑蒙王少荣刘涤尘
Owner STATE GRID CORP OF CHINA
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