(1) The two sets of line reactor protection are both the WDK-600 type reactor protection device of Guodian South China. The second set of protection device has no warning light and no action message; the first set of protection device panel "protection action", "alarm" The “signal” light is on, and the device action message is as follows:
04-19 12:19:43.070 Zero sequence differential action trip;
04-19 12:19:43.073 Split-phase differential action trip.
(2) The three-phase trip light on the panel of the intermediate circuit breaker protection device (NARI LFP-921B circuit breaker protection) is on, and the device action message displays the action time as 04-19 12:19:43.
(3) The three-phase trip light on the panel of the side circuit breaker protection device (NARI LFP-921B circuit breaker protection) is on, and the device action message displays the action time as 04-19 12:19:43.
(4) The SOE record related information recorded by the integrated platform is as follows:
04-19 12:19:43.241 Reactor measurement and control interval zero difference action outlet;
04-19 12:19:43.244 Reactor measurement and control interval differential action outlet;
04-19 12:19:43.246 Intermediate circuit breaker is disconnected in the measurement and control interval of the intermediate circuit breaker;
04-19 12:19:43.336 The side circuit breaker is measured and controlled at the interval side circuit breaker is disconnected;
04-19 12:19:44.858 Reactor measurement and control interval zero difference action return;
04-19 12:19:44.858 Reactor measurement and control interval differential action return;
(5) The fault recorder records the relevant waveforms, and the waveforms show that the voltage has no obvious change before and after the reactor zero-differential and split-phase differential outlets.
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