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Reactive power compensation device and method for power transmission and distribution

A compensation device, power transmission and distribution technology, applied in reactive power compensation, circuit devices, reactive power adjustment/elimination/compensation, etc., can solve the problems of inability to meet reactive power compensation requirements of power transmission and distribution systems, output quality, poor synchronization, There are many control modules to achieve the effect of improving the stability margin and accuracy, meeting the requirements of reactive power compensation, and reducing the calculation process

Pending Publication Date: 2021-09-03
YIXING HUAYUAN ELECTRIC POWER CONSTR
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Problems solved by technology

The current reactive component detection methods are all based on the theory of instantaneous reactive power, and require d-q coordinate transformation. However, when using these methods to detect reactive components, multiple coordinate calculations are required, the process is complicated, too many control modules are used, and the reliability is poor.
In addition, the output quality and synchronization of existing reactive power compensation devices are poor, which cannot meet the reactive power compensation requirements of power transmission and distribution systems

Method used

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  • Reactive power compensation device and method for power transmission and distribution
  • Reactive power compensation device and method for power transmission and distribution
  • Reactive power compensation device and method for power transmission and distribution

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Embodiment Construction

[0035] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] The application discloses a reactive power compensation device for power transmission and distribution, which is used for reactive power compensation of the power transmission and distribution system, ...

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Abstract

The invention discloses a reactive power compensation device for power transmission and distribution. The reactive power compensation device comprises a DC voltage acquisition module, an AC power supply voltage acquisition module, an AC power supply current acquisition module, a reference current amplitude calculation module, a reference current phase calculation module, a reference current calculation module, a modulation signal calculation module, a PWM modulation module and a reactive power compensation main circuit. According to the reactive power compensation device, the calculation process is greatly reduced, the implementation structure is simple, the output quality is improved, and the reactive power compensation requirement of a power transmission and distribution system can be met.

Description

technical field [0001] The invention relates to a reactive power compensation device and method, in particular to a reactive power compensation device and method for power transmission and distribution. Background technique [0002] The problem of reactive power compensation in power transmission and distribution systems has always attracted people's attention. The use of reactive power compensation devices can improve the power factor of the power transmission and distribution system, reduce the loss of power supply transformers and transmission lines, improve power supply efficiency, and improve the power supply environment. Therefore, the reactive power compensation device is in an indispensable position in the power transmission and distribution system. Reasonable selection of reactive power compensation device can minimize the loss of power transmission and distribution system and improve power quality. On the contrary, if it is selected or used improperly, it may cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCH02J3/1842Y02E40/30
Inventor 赵李霞周小强丁春良
Owner YIXING HUAYUAN ELECTRIC POWER CONSTR
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