Feeder automation processing method and device of distribution network

A feeder automation and processing method technology, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of main line and branch line interruption of power supply, long instantaneous power failure, etc., to meet the upgrade requirements, and the effect of simple and reliable fault handling is achieved.

Inactive Publication Date: 2010-03-03
胡诚
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The invention provides a feeder automatic processing method and its device for a distribution network. When a fau

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  • Feeder automation processing method and device of distribution network
  • Feeder automation processing method and device of distribution network
  • Feeder automation processing method and device of distribution network

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] A feeder automatic processing device for distribution network, refer to figure 1 , Reclosers CH1 and CH2 are used to connect the power stations A and B and the main lines L1 and L2 respectively, and the tie switch L is used to connect the two main lines L1 and L2. The segment switches F1, F2, F3, and F4 are connected, the tie switch L is normally open, and the segment switches F1, F2, F3, and F4 are normally closed. The main line L1 and the short branch line L3 are connected by a branch switch Fz, and the main line L1 and the short branch line L4 are connected by a circuit breaker Dz.

[0022] The reclosers CH1 and CH2 have three times the function of reclosing, cooperate with the protection according to their current time curve, or carry out protection according to the set timing limit value, and have a watchdog function.

[0023] Section switch...

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Abstract

The invention relates to a feeder automation processing method and a device of a distribution network, wherein a first-time reclosing of a power station outlet recloser is used for eliminating transient line fault, if the first-time reclosing fails, the line fault of the time is permanent fault, section switches on all main networks on the line are separated, and then normal power supply of non-fault sections is recovered by being matched with time to isolate the fault sections according to the voltage and change condition thereof; if the permanent fault on a short branch line occurs, the section switch at the forficate part of the short branch line is separated and locked after two times of overcurrent pulse is counted and two sides of the switch lose power, thus realizing automatic isolation of the fault sections. In addition, the scheme also fully considers the processing during sing-phase earth fault. The invention leads fault processing to be simple, convenient and reliable, and can recover the normal power supply of all lines with transient fault or non-fault lines during permanent fault in a short time to the maximal extent.

Description

technical field [0001] The invention relates to an automatic processing method for power supply line faults, in particular to a feeder automatic processing method and device of a distribution network. Background technique [0002] The recloser and the voltage-time sectionalizer represented by the VSP5 of Japan's Toshiba Company are a commonly used feeder automation method. When a fault occurs, the recloser trips, and then the sectionalizer along the line is opened due to loss of voltage. After a delay, the recloser recloses for the first time, and the sectionalizers along the line are automatically closed in sequence. When it is closed to the fault point, it will cause The recloser and the sectionalizer are tripped in the second round, and the sectionalizer connected to the faulty section is locked in the off position. [0003] When a temporary fault occurs, the above-mentioned recloser and the voltage-time sectionalizer also need to be reclosed in sequence to restore the p...

Claims

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Application Information

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IPC IPC(8): H02H7/26
Inventor 贾冬霞胡诚
Owner 胡诚
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