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Loop closing control method for loop closing switch of power distribution network

A technology of loop control and distribution network, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as low reliability, and achieve the effects of improving success rate, reducing investment, and efficient control methods

Active Publication Date: 2017-08-18
XUJI GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a loop closing control method of a distribution network loop closing switch to solve the problem of low reliability of the existing loop closing control method

Method used

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  • Loop closing control method for loop closing switch of power distribution network
  • Loop closing control method for loop closing switch of power distribution network
  • Loop closing control method for loop closing switch of power distribution network

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Embodiment Construction

[0018] Since the current after closing the loop is composed of the initial current before closing the loop and the impact current when closing the loop, a reasonable coordinated control strategy is adopted according to local conditions to adjust the voltage vector difference on both sides of the loop closing switch to meet the requirements of the loop closing switch. conditions, the smooth loop operation of the distribution network can be realized.

[0019] The invention provides a loop closing control method of a loop closing switch in a distribution network, which adjusts the output power of distributed power generation on at least one side of the loop closing switch, and adjusts the input power of the load on at least one side of the loop closing switch, so that the loop closing The switch satisfies the condition of closing the loop, and controls the closing of the loop closing switch. Among them, the loop-closing condition is: the voltage vector difference on both sides of...

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Abstract

The present invention relates to a loop closing control method for the loop closing switch of a power distribution network. The output power of the distributed power generation on at least one side of the loop closing switch is adjusted, and the access power of a load on at least one side of the loop closing switch is switched and adjusted. Finally, the voltage vector difference between the two sides of the loop closing switch is enabled to be smaller than a preset value. Meanwhile, the voltages of other related nodes, other than the loop closing switch of the power distribution network, are within the range of allowable values. At this time, the loop closing switch is closed. When the loop closing control cannot be realized through the adjustment of one parameter, the other parameter is adjusted to finally realize the loop closing control. Therefore, the control method is very efficient. The distributed power generation has the advantage of reactive compensation, and the flexible adjustment of loads is also realized. Therefore, the loop closing success rate of the loop closing switch of the power distribution network is improved, so that the uninterrupted power supply to important loads is realized. Meanwhile, the investment on traditional power generation power requirements and other reactive power compensation equipment is reduced.

Description

technical field [0001] The invention relates to a loop closing control method of a distribution network loop closing switch. Background technique [0002] In my country, most medium-voltage distribution networks adopt the "closed-loop design, open-loop operation" method of power supply, and the maintenance of the line is carried out through power failure and load reversal. This method greatly reduces the reliability of power supply and causes great harm to the production and life of users. Especially for users who have special requirements for the continuity of power supply, it will increase the difficulty of power outages. Therefore, in order to meet the increasingly stringent demand of users for uninterrupted power supply, it has become an important operation mode of the distribution network in the future to realize the transfer of power load under the uninterrupted mode by performing loop closing operation on the distribution network. Such as figure 1 As shown, it is the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/18H02J3/38
CPCH02J3/00H02J3/18H02J3/382Y02E40/30
Inventor 黄利军王雷涛李献伟吕梦婷邹欣洁张延辉梁鹏威孙啸天
Owner XUJI GRP
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