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Patent Searching and Data


Title:
VOLTAGE CONTROL METHOD FOR POWER DISTRIBUTION NETWORK CIRCUIT CONTAINING DISTRIBUTED POWER SUPPLIES, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/088452
Kind Code:
A1
Abstract:
The present application relates to a voltage control method for a power distribution network circuit containing distributed power supplies and a device, pertaining to the field of power distribution network control. The method comprises: acquiring a node voltage of an access node of each distributed power supply in a distribution network circuit, selecting an access node that has a highest node voltage exceeding a normal range as a guide node, and reducing, if the voltage of the guide node is in a warning state, a reactive power value of the distributed power supply at the guide node; and if the reduction of the reactive power value of the distributed power supply at the guide node to a minimum adjustable reactive power value is unable to enable the voltage of the guide node to reach a value within the normal range, reducing a reactive power value of a distributed power supply for the remaining distributed power supplies one by one in an ascending order of distances between the distributed power supplies and the guide node. The present application regulates the voltage of the guide node to be within the normal range by using only a few distributed power supplies, such that all nodes on the power distribution network circuit that are overvoltage are all restored to the normal range, thereby improving power supply reliability and stability of the power distribution network circuit.

Inventors:
GUO BAOFU (CN)
ZHAO JIANGXIN (CN)
LI LEI (CN)
CAO XINHUI (CN)
TIAN YING (CN)
WANG WEIXING (CN)
YUAN JUNJUN (CN)
Application Number:
PCT/CN2020/109637
Publication Date:
May 14, 2021
Filing Date:
August 17, 2020
Export Citation:
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Assignee:
XJ GROUP CORP (CN)
XJ ELECTRIC CO LTD (CN)
XUCHANG XJ SOFTWARE TECHNOLOGY (CN)
STATE GRID CORP CHINA (CN)
ELECTRIC POWER RES INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER CO LTD (CN)
ECONOMIC AND TECHNICAL RES INSTITUTE OF STATE GRID XINJIANG ELECTRIC POWER CO LTD (CN)
International Classes:
H02J3/16; H02J3/38
Foreign References:
CN110854864A2020-02-28
CN109038599A2018-12-18
CN106300369A2017-01-04
CN109103890A2018-12-28
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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