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Scattered type power quality regulation system

A decentralized technology for power quality adjustment, applied in the direction of AC network voltage adjustment, electrical components, circuit devices, etc., can solve the problems of limited actual benefits and high investment costs, and achieve the goal of reducing power costs, reducing system capacity, and improving power quality Effect

Inactive Publication Date: 2016-06-22
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of facility flexibility, the traditional UPQC installation position in the distribution network is relatively fixed, and the actual benefits obtained by capacity optimization and configuration optimization are limited; from the perspective of investment economy: all users in the distribution network need to obtain a certain level power quality, the investment cost of installing traditional UPQC is relatively high

Method used

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  • Scattered type power quality regulation system
  • Scattered type power quality regulation system
  • Scattered type power quality regulation system

Examples

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Embodiment 1

[0050] The distributed power quality regulator of the present invention is composed of a series compensation device and a parallel compensation device. The series compensation device is installed at the front end of the sensitive load or common coupling point which is sensitive to voltage, so as to provide higher voltage quality for all feeders after the sensitive load or common coupling point. The shunt compensation device is installed near the end of the feeder with impact and nonlinear sensitive loads or before the common coupling point, so that a good current waveform can be maintained before the load or before the common coupling point PCC without affecting other sensitive loads. Each series compensation device and each parallel compensation device contains at least one central controller. In addition to realizing its own local operation control, the central controller also includes a communication unit, a central controller of the series compensation device or parallel co...

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PUM

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Abstract

The invention discloses a scattered type power quality regulation system. The scattered type power quality regulation system comprises one or more series-wound type compensation apparatus and shunt-wound type compensation apparatus, wherein each of the series-wound type compensation apparatuses and shunt-wound type compensation apparatuses comprises a central control unit; and direct current buses are not shared between the series-wound type compensation apparatuses and shunt-wound type compensation apparatuses. When the multiple series-wound type compensation apparatuses and shunt-wound type compensation apparatuses are jointly used, a management center is provided, wherein the management center judges power grid fault types by sampling power grid voltages and load current information so as to realize coordinated operation of the respective series-wound type compensation apparatuses and the shunt-wound type compensation apparatuses.

Description

technical field [0001] The invention relates to the field of power quality regulation, and more specifically, to a distributed power quality regulation system. Background technique [0002] With the continuous increase of nonlinear loads and impact loads in the power system, especially the wide application of power electronic conversion devices, the harmonic distortion of the power grid is becoming more and more serious. At the same time, there are often three-phase unbalanced and harmonic interference phenomena in the grid voltage. On the other hand, with the popularity of various complex and sophisticated devices (such as computers) that require high power quality, people put forward higher and higher requirements for power quality, and power quality devices and control technologies have become current hot spots question. [0003] Such as figure 1 As shown, the traditional Unified Power Quality Conditioner (Unified Power Quality Conditioner, UPQC), as a flexible power d...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/01H02J3/12H02J3/18H02J3/26H02J9/02
CPCH02J3/00H02J3/01H02J3/12H02J3/1807H02J3/1821H02J3/1871H02J3/26H02J9/02Y02E40/30Y02E40/40Y02E40/50
Inventor 黎德良张淼袁梓锋苏协飞
Owner GUANGDONG UNIV OF TECH
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