Transformer area self-healing control method based on terminal
A self-healing control and terminal technology, applied in the field of low-voltage distribution network, can solve problems such as low efficiency of equipment management mode, difficulty in satisfying active operation and maintenance, emergency repair of low-voltage station areas, and lack of mature and reliable fault self-healing and recovery methods.
Pending Publication Date: 2022-03-29
QINGDAO TOPSCOMM COMM +1
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Problems solved by technology
[0002] With the development of science and technology, the scale of the low-voltage distribution network area continues to expand, and the existing distribution network area is inefficient in the equipment management mode, and it is difficult to meet the business needs of active operation and maintenance and emergency repair of the low-voltage station area.
Once a fault occurs in the distribution station area, there is no mature and reliable fault self-healing recovery method, and only manual troubleshooting can be used to realize fault point judgment and fault type screening
Therefore, it takes a long time from troubleshooting to elimination, and it is difficult to meet the reliability of power supply
Method used
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[0047] The present invention will be further described below in conjunction with the accompanying drawings. The following content is only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0048] combined with figure 1 , a terminal-based station area self-healing control method, comprising the following steps:
[0049] S1: The station area terminal adopts the characteristic current type station area topology identification technology, the circuit breaker supports the identification of the characteristic current, and the local power line carrier communication module supports the sending of the characteristic current. The terminal in the station area sequentially asks the local power line carrier communication modules on n circuit breakers to send characteristic currents. After the transmission is completed, it reads the identification records in the n circuit breakers, and finally so...
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The invention discloses a transformer area self-healing control method based on a terminal. The method comprises the following steps that S1, a transformer area terminal sorts out topological structures of n circuit breakers in a transformer area; s2, calculating overcurrent tripper setting current values of the n circuit breakers and issuing the overcurrent tripper setting current values to the corresponding circuit breakers by the transformer area terminal; s3, when the breaker monitors that the current break variable and the fault current duration exceed a threshold value, tripping is carried out, and an event is reported; s4, a plurality of breakers at the upstream of the fault are triggered to act due to possible deviation of the time level difference and the setting current value and too large short-circuit current; and S5, the terminal carries out fault section positioning according to the area topology identification result information and the circuit breaker event, reclosing of the circuit breaker is carried out in sequence from the line topology bus side to the load side until the line fault point, and self-healing control is realized. According to the invention, power distribution network fault detection, positioning and fault area isolation are realized, an electrified area is used as a power supply, and power supply to a non-fault power failure area is recovered to the greatest extent.
Description
technical field [0001] The invention relates to low-voltage distribution network technology, in particular to a terminal-based self-healing control method for a station area. Background technique [0002] With the development of science and technology, the scale of the low-voltage distribution network area continues to expand, and the existing distribution area is inefficient in the equipment management mode, and it is difficult to meet the business needs of active operation and maintenance and emergency repair of the low-voltage station area. Once a fault occurs in the distribution station area, there is no mature and reliable fault self-healing recovery method, and the fault point judgment and fault type screening can only be realized by manual investigation. Therefore, it takes a long time from troubleshooting to elimination, and it is difficult to meet the reliability of power supply. [0003] The self-healing control of the terminal in the station area can detect and i...
Claims
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Login to View More IPC IPC(8): H02H7/26H02H3/093H02H3/06H02J13/00
CPCH02H7/263H02H7/262H02H3/093H02H3/063H02H3/066H02J13/00007H02J13/0004
Inventor 葛玉磊田珂刘清郑亚岗杜志国
Owner QINGDAO TOPSCOMM COMM