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Voltage deviation control method based on hybrid STATCOM

A voltage deviation and deviation technology, which is applied in the field of voltage deviation control based on hybrid STATCOM, can solve problems such as power quality problems that cannot be solved.

Inactive Publication Date: 2019-02-26
上海清效电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, STATCOM can only perform voltage control through reactive power compensation of local loads, and cannot solve power quality problems caused by adjacent loads and power supply sides.

Method used

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  • Voltage deviation control method based on hybrid STATCOM
  • Voltage deviation control method based on hybrid STATCOM
  • Voltage deviation control method based on hybrid STATCOM

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] figure 1 For the hybrid compensation device that the present invention proposes, mainly by several ( figure 1 is three) STATCOMs are composed of DC back-to-back hybrid connections, and the structure of a single STATCOM is as follows figure 2 shown.

[0027] figure 1 The shown hybrid compensation device can flexibly control active power and reactive power, and realize four-quadrant operation. It can provide reactive power compensation to the AC side,...

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Abstract

The invention discloses a voltage deviation control method based on a hybrid STATCOM. Firstly, a plurality of STATCOMs are combined in a DC back-to-back hybrid manner to form a hybrid compensation device. When the load under a transformer is unbalanced, each STATCOM can transmit active power through a DC bus so as to prevent overloading of the high-load operated transformer. The reasonable transmission of active power is achieved through rapid coordinated control of the power. The economy of the user's electricity utilization and voltage levels of the users are further improved. according to the invention, on the basis of realizing local reactive power compensation and harmonic control, the user's voltage deviation is effectively improved and the electricity utilization level and economy are improved through the coordinated control of power.

Description

technical field [0001] The invention relates to the technical field of flexible alternating current transmission (FACTS), in particular to a voltage deviation control method based on a hybrid STATCOM. Background technique [0002] Under the background that the country vigorously promotes the sustainable development of energy and the process of urbanization continues to accelerate, the user's demand for electricity, especially the requirements for power quality, is getting higher and higher. Under the challenges of diverse loads and efficient utilization of electric energy, improving power quality and reliability of power supply for users has become an urgent problem to be solved. [0003] Static synchronous compensator (STATCOM) is a new type of reactive power compensation device formed by half-controlled / full-controlled power electronic devices. It has the functions of stabilizing voltage, improving power factor, and controlling harmonics, and has the advantages of fast res...

Claims

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Application Information

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IPC IPC(8): H02J3/18H02J3/01
CPCH02J3/01H02J3/1821Y02E40/10Y02E40/40
Inventor 庄骏鹏
Owner 上海清效电气有限公司
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