Electric energy quality control system and method of low voltage distribution network

A low-voltage distribution network and power quality technology, applied in information technology support systems, electrical components, circuit devices, etc., can solve problems such as large losses and poor governance effects, achieve guaranteed governance effects, and solve various power quality problems Effect

Pending Publication Date: 2018-07-24
XIAN ACTIONPOWER ELECTRIC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In order to solve the technical problems of the existing low-voltage distribution network power quality management system or the large loss or poor governance effect, the present invention provides a low-voltage distribution network power quality control system and method

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  • Electric energy quality control system and method of low voltage distribution network
  • Electric energy quality control system and method of low voltage distribution network
  • Electric energy quality control system and method of low voltage distribution network

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Embodiment Construction

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

[0037] Such as figure 1 As shown, the low-voltage distribution network power quality comprehensive optimization control system and method of the present invention include a power quality active compensation unit, a system controller, a passive reactive power compensation unit, a commutation switch group, a current sampling unit, and a voltage sampling unit and communication unit; the power quality active compensation unit is based on power electronics technology, high power density and small volume portable module, which has the functions of harmonic control, reactive power compensation and three-phase unbalance adjustment, and the capacity of the active function module is 30kVA; the system controller is Coordinate and control the core unit of the power optimization system to realize the orderly and efficient operation of the power quality active compensation unit, r...

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Abstract

The invention discloses an electric energy quality control system and method of a low voltage distribution network. The system comprises an electric energy quality active compensation unit, a system controller, a passive reactive compensation unit and a commutation switch block; the electric energy quality active compensation unit has functions of harmonic wave treatment, reactive compensation andthree phase imbalance adjustment; the passive reactive compensation unit realizes reactive compensation and has the three phase imbalance treatment function to certain extent; the commutation switchblock adjusts rules of three-phase imbalance regularly of the low voltage distribution network with short circuit among phases; and the system realized ordered high-efficiency operation of the electric energy quality active compensation unit, the passive reactive compensation unit and the commutation switch block. Different electric energy quality problems of the low-voltage distribution network can be solved effectively, the treatment effect is ensured, and the system loss is minimized as possible.

Description

technical field [0001] The invention relates to power electronics technology, in particular to a low-voltage power distribution network power quality control system and method. Background technique [0002] In the low-voltage distribution network, especially in the low-voltage distribution network system of the rural power grid, most of the power loads are single-phase loads. Due to factors such as differences in power consumption time, the problem of three-phase imbalance exists objectively and in real time. The problem of three-phase imbalance Seriously restricting transformer output and voltage quality problems, resulting in increased loss of low-voltage distribution lines; and with economic development, more and more nonlinear loads, harmonics and reactive power problems are becoming more and more prominent; power electronics technology for low-voltage The control of power quality problems in the distribution network has absolute technical advantages, but the power quali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/26H02J3/01
CPCH02J13/0017H02J13/0075H02J3/18H02J3/1821H02J3/26H02J13/00007Y02E40/30Y02E40/50Y04S40/121Y04S40/126Y02E40/40Y02B90/20Y02E60/00
Inventor 白士贤高鹏王启华孙鹏博
Owner XIAN ACTIONPOWER ELECTRIC
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