Power supply recovery protection method suitable for distributed feeder automation distribution terminal
A technology for feeder automation and power distribution terminals, which is applied in the direction of automatic disconnection emergency protection devices, emergency protection circuit devices, electrical components, etc., and can solve problems such as long operation time.
Active Publication Date: 2021-06-04
ZHUHAI XJ ELECTRIC
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Problems solved by technology
The current implementation of local feeder automation is mainly voltage-time type and self-adaptive comprehensive type. These two methods need to rely on the reclosing action of the outlet circuit breaker of the substation to cooperate, and the action time is relatively long.
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[0023] The specific embodiment of the present invention will be described in detail in this section, and the preferred embodiment of the present invention is shown in the drawings, and the effect of the drawings is to use a graphical supplementary description of the text section, which enables people to understand the present Each of the techniques and an overall technical solution of the invention, but it is not understood to limit the scope of the invention.
[0024] In the description of the present invention, it is to be understood that the orientation or positional relationship of the orientation, such as upper, lower, prior, and then left, right, etc., is only based on the orientation or positional relationship shown in the drawing. In order to facilitate the description of the invention and simplified description, rather than indicating or implying that the device or element must have a particular orientation, it is not understood to be limited to the present invention.
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The invention relates to the field of electric power supply systems, and discloses a power supply recovery protection method suitable for distributed feeder automatic power distribution terminals. In the present invention, multiple switch controllers in the same ring network cabinet transmit signals to each other through the GOOSE protocol; signals are transmitted between adjacent ring network cabinets through optical fiber channels; The first-level ring main unit transmits the signal of the action result and transmits the signal to the open-loop point step by step, or directly transmits the signal of the action result to the open-loop point. Whether it is a unilateral pressure loss state, when the two conditions are met at the same time, the open-loop point is closed, otherwise, it is not closed. The invention transmits signals between the ring network cabinets through the optical fiber channel, combined with the rapidity of GOOSE transmission in the ring network cabinets, realizes the quick action feeder automation, improves the reliability of the line protection at the power distribution end, and accelerates the fault isolation process. Action time and improved signal transmission stability.
Description
Technical field [0001] The present invention relates to the field of power supply systems, particularly a power supply recovery protection method suitable for distributed feeder automated power distribution terminals. Background technique [0002] According to the current distribution of the current distribution network, the distribution network automation is to monitor the operation status of the distribution network by using the automation device or system, and timely discover the distribution network failure, fault positioning, isolation, and restore the supply of non-fault zones. Current feeder automation implementation is mainly used in centralized and local models. [0003] The centralized feeder automation mode is a communication device, and the fault is determined by the distribution terminal, and the fault zone is determined by the distribution main station, and the fault area is recovered by automatically remote control or manual isolation of the fault area. powered by....
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IPC IPC(8): H02J13/00H02H7/26H02H3/06
CPCH02H3/06H02H7/26Y02E60/00Y04S10/20Y04S10/52
Inventor 陈林王建微廖伟刘红伟
Owner ZHUHAI XJ ELECTRIC