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Power quality management method for active distribution network

An active distribution network and power quality technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as poor power quality in regulating oscillating grid power supply, optimize reactive power flow, improve voltage quality, and reduce power distribution. The effect of grid losses

Inactive Publication Date: 2019-10-01
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems in the prior art, in order to avoid the adjustment oscillation caused by the conventional "trigger" voltage control and the poor quality of the grid power supply, and to provide a system that can keep the voltage in a safe range all the time and ensure the quality of power supply. Control method of power quality in active distribution network

Method used

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  • Power quality management method for active distribution network
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Embodiment

[0034] Example: such as figure 1 The shown active distribution network power quality management method includes the following steps:

[0035] (1-1) Research: Master the output characteristics of distributed small hydropower and photovoltaic through research;

[0036](1-2) Data mining: use big data mining technology to integrate and analyze the historical data of the electricity consumption information collection system;

[0037] Wherein, the big data mining technology described in step (1-2) comprises the following steps:

[0038] (1-2-1) In the data selection stage, search for all data information related to the analysis task object in the database, and select the appropriate data;

[0039] (1-2-2) In the data preprocessing stage, the quality of the data is studied, and the type of operation to be mined is determined at the same time, so as to prepare for the analysis of the next stage;

[0040] (1-2-3) In the data conversion stage, the data is converted into a form suitab...

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Abstract

The invention discloses a power quality management method for an active distribution network. The method comprises a step of grasping the output characteristics of distributed small hydropower and photovoltaic units through investigation, a step of integrating and analyzing the historical data of an electricity consumption information collection system by using big data mining technology, a step of performing the coordinated control of power quality, a step of performing power quality optimization, and a step of performing active power distribution. According to the method, the distribution network is hierarchically and regionally controlled based on an active distribution network radial structure, a distributed power source and a reactive power regulating device are fully used, the powerquality control of the active distribution network is achieved by using a top-down manner, the voltage is always in a safe interval, and the quality of the power supply is ensured.

Description

technical field [0001] The invention relates to the technical field of power quality control, in particular to an active distribution network power quality control method capable of keeping the voltage in a safe range all the time and ensuring the quality of power supply. Background technique [0002] Small hydropower is a clean and renewable green energy. The development of small hydropower plays an important role in promoting the local economic and social development in my country. In particular, the distributed power supply characteristics of small hydropower guarantee the safe supply of regional power to a large extent. However, since most of the small hydropower stations are run-of-the-river hydropower stations, the power generation is affected by the seasonality of the river. When the load also changes, there will be some problems in the operation of the power grid with a large number of small hydropower connected, especially in the low tide of the small hydropower grid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 赵寿生范晓东方旭光贾立忠杨震钟伟丁华建蒋嵘王敏娄燕吴昊柳延洪徐政军徐勇俊方君王斌舒展卢鸣凯朱泽厅张一航楼钢
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JINHUA POWER SUPPLY CO
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