Method for processing faults of super-long 10-kV feeder line based on intermediate circuit breaker

A technology of circuit breakers and outlet circuit breakers, applied in emergency protection circuit devices, electrical components, etc., can solve problems such as poor power consumption experience and long time to deal with failures.

Active Publication Date: 2021-02-02
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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[0005] This application provides a method for handling ultra-long 10kV feeder faults based on an intermediate ...

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  • Method for processing faults of super-long 10-kV feeder line based on intermediate circuit breaker
  • Method for processing faults of super-long 10-kV feeder line based on intermediate circuit breaker
  • Method for processing faults of super-long 10-kV feeder line based on intermediate circuit breaker

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Embodiment Construction

[0032] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.

[0033] Such as Figure 1 to Figure 4 shown.

[0034] The present invention utilizes the existing voltage-time feeder automatic fault processing logic, the CB protection and reclosing function of the outlet circuit breaker in the station, and the feeder intermediate circuit breaker CB1 protection and reclosing function to cooperate with each other to realize fault location and isolation in the rear section of the ultra-long 10kV ...

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Abstract

The invention relates to a method for processing faults of an ultra-long 10-kV feeder line based on an intermediate circuit breaker. The method is applied to a main line of an ultra-long power distribution line and is characterized in that an outlet circuit breaker CB is arranged at the head end of the main line; a sectional circuit breaker FD1, a sectional circuit breaker FD2, a sectional circuitbreaker FD3 and a sectional circuit breaker FD4 are sequentially arranged on the main circuit from the position close to the outlet circuit breaker CB to the position far away from the outlet circuitbreaker CB; and a middle circuit breaker CB1 is arranged between the sectional circuit breaker FD2 and the sectional circuit breaker FD3. ;According to the invention, the intermediate circuit breakerCB1 is additionally arranged between the FD2 and the FD3, and the intermediate circuit breaker CB1 has the functions of input protection and secondary reclosing, so the function of an outlet circuitbreaker CB in a station is realized, and a short-time power failure of a front section of the line is not caused when a rear section of the line fails and through cooperation of the protection and reclosing functions of the intermediate circuit breaker CB1 and a voltage time type section switch, fault positioning and isolation of the rear section of the line and power restoration of the non-faultsection are realized, so the power utilization experience of a user at the front section and the power supply reliability of the line are improved.

Description

technical field [0001] The present application relates to the technical field of distribution line operation and maintenance, and in particular to a method for handling ultra-long 10kV feeder faults based on an intermediate circuit breaker. Background technique [0002] With the development of my country's economy and the improvement of people's living standards, people have put forward more and higher requirements for the reliability of power supply. Due to the imbalance between the east and the west of my country's economic development, the distribution network structure of most remote mountainous areas is unreasonable. , there are still a large number of ultra-long lines, which bring great difficulties to improve the reliability of the distribution network. According to statistics, power outages are the main reason affecting the reliability of power supply. According to statistics, power outages caused by faults in the power system account for about 80% of the entire power...

Claims

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Application Information

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IPC IPC(8): H02H7/30
CPCH02H7/30Y04S10/52
Inventor 周昊李富祥王洪林李维施冬明王亚平
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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