Automatic fault isolation method for power telecontrol box-type substation

• Main Authors: LIU XUEBAO, SONG PENG, CHEN HONGNAN, LI GUANGZHI, WANG HAOZHUO, TIAN LILI, REN MENGSHUO
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2024
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The invention discloses an automatic fault isolation method for a power telecontrol box-type substation, and the method comprises the following steps: S1, enabling each circuit breaker and an isolation device to be switched off when a fault occurs in a through line; s2, reclosing the main power supply station; starting from the first power telecontrol box-type substation, single-side power-on time-delay switching-on is carried out in sequence; s3, if the isolation device detects the fault current within the time after the circuit breaker at the interval of incoming and outgoing lines of the looped network is switched on, the isolation device isolates the current power telecontrol box-type substation from the fault point; s4, switching on a feeder circuit breaker of the standby power supply station; sequentially switching on from the last power telecontrol box-type substation; s5, the standby power supply station transmits power to the power telecontrol box-type substation behind the fault point, and the step