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Control method of voltage time type intelligent switch controller

A voltage time, intelligent switch technology, applied in the direction of electronic switches, electrical components, emergency protection circuit devices, etc., can solve the problems of long power supply recovery time, misjudgment of power distribution network faults, poor network adaptability, etc., to shorten the power outage time, The effect of reducing switch opening and closing and improving adaptability

Active Publication Date: 2019-02-12
SHANGHAI HUAYI DISTRIBUTION AUTOMATION
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  • Description
  • Claims
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Problems solved by technology

[0004] The above method has several significant disadvantages: 1. The power supply recovery time in the fault isolation and non-fault areas is relatively long, often several minutes, which has a great impact on users; 2. The terminal switches on the line operate frequently. Cause all the switches on the distribution network to open; 3. The adaptability to the network is poor, and it may cause misjudgment of faults in a more complex power distribution network

Method used

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  • Control method of voltage time type intelligent switch controller
  • Control method of voltage time type intelligent switch controller
  • Control method of voltage time type intelligent switch controller

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Embodiment 1

[0023] Such as figure 2 , the control method of the voltage time intelligent switch type controller in the present embodiment includes four kinds of logical states: (1) opening state, (2) X timing state, (3) Y timing state, (4) closing state .

[0024] The control method of the voltage time type intelligent switch controller in this embodiment includes five different timing types:

[0025] (1) X delay: the delay before the switch is closed, used to confirm that there is no fault in the front section of the switch;

[0026] (2) Y delay: the delay after the switch is closed, used to confirm that there is no fault in the rear section of the switch;

[0027] (3) Zero-sequence overvoltage delay time: The delay time when the switch is closed and zero-sequence voltage is detected during the Y delay process is used to confirm the ground fault;

[0028] (4) Locking and opening timing: the time for the switch to lock and open;

[0029] (5) Over-current counting timing: When the set...

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Abstract

The voltage time type intelligent switch controller control method comprises the following steps: a, a switch has X time delay before closing so as to confirm no fault in a switching previous period; b, the switch has Y time delay after closing so as to confirm no fault in a switching afterwards period; c, after the switch Y time delay is finished, a locking switch opening time is set; d, locking switch opening time of the switch is finished, if voltage loss is detected, the voltage time type intelligent switch opens. The voltage time type intelligent switch controller gives a closing motion and after Y time delay confirmation, locking opening with a set time can be obtained; when switch controller closing of a distribution line is confirmed, the voltage time type intelligent switch controller will not give an opening motion even if line voltage loss is detected in the set locking opening time; when a transformer station redelivers the power, all switches before a fault time period will not execute time delay before closing, so closing can be directly carried out, thus greatly reducing power failure time.

Description

【Technical field】 [0001] The invention relates to the field of feeder automation of power distribution systems, in particular to a control method for a voltage-time intelligent switch controller. 【Background technique】 [0002] At present, most of the voltage-time intelligent switch controllers widely used are imported from Japan’s Toshiba technology. Because they can isolate fault points only based on voltage and time, and the cost is low, they are welcomed in the development and construction of urban and rural power distribution automation systems. . [0003] Such as figure 1 , The principle of "voltage-time" type feeder is that when a fault occurs, the switch of the substation will trip, and the terminal switch controller of the distribution network line will perform the opening action after confirming the loss of voltage. When the substation sends power again, the terminal switch controller of the distribution line executes a delay (X time) before closing to confirm wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26H03K17/28
Inventor 王焕文郭浩洋杜益群
Owner SHANGHAI HUAYI DISTRIBUTION AUTOMATION
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