[0019] Example 1: Please refer to figure 1 , A high-voltage STATCOM control platform for switching between active and standby dual control systems, including system A FCK404-100 chassis, system A FCK401-100 chassis, system A FCK402-100 chassis, system B FCK404-100 chassis, and system B FCK401-100 Chassis, B system FCK402-100 chassis, of which, A system FCK404-100 chassis and B system FCK404-100 chassis are both active/standby switching chassis, which are mainly responsible for active/standby switching, that is, the two subsystems A and B each contain 1 main Standby switching cabinets, A system FCK401-100 cabinets and B system FCK401-100 cabinets are control protection cabinets, mainly responsible for sampling, opening in and out, control and protection functions; A and B subsystems each contain a set of control protection Chassis, A system FCK402-100 chassis and B system FCK402-100 chassis are both optical fiber transceiver chassis, mainly used for the control of the sub-modules (also called chain links) of high-voltage STATCOM; A and B subsystems each contain a set of valves Control the chassis, the signals A_OK and B_OK in the figure are the self-checking normal signals of the A system and the B system; A_ACT and B_ACT are the active status signals of the A system and the B system; if A_ACT is valid, it means that the A system is an active system, and The management B system is similar. The system has two modes of manual and automatic switching. In manual mode, given that the B system is valid, then B is valid. A_Trip and B_Trip signals are trip signals. If they cannot be switched, they will be tripped.
[0020] A system FCK404-100 chassis is connected to A system FCK401-100 chassis, A system FCK402-100 chassis, B system FCK404-100 chassis, A phase FCK403-100 chassis, B phase FCK403-100 chassis and C phase FCK403-100 chassis, The B system FCK404-100 chassis is also connected to the B system FCK401-100 chassis, the B system FCK402-100 chassis, the A phase FCK403-100 chassis, the B phase FCK403-100 chassis and the C phase FCK403-100 chassis, and the A system FCK401-100 chassis It is also connected to the FCK401-100 chassis of system B. System A FCK402-100 chassis includes phase A output, phase B output and phase C output. Phase A output is connected to phase A FCK403-100 chassis, phase B output is connected to phase B FCK403-100 chassis, and phase C is output. Connect the C-phase FCK403-100 chassis, the A-phase FCK403-100 chassis, the B-phase FCK403-100 chassis and the C-phase FCK403-100 chassis are all fiber optic transceiver chassis, which are mainly used for high-voltage STATCOM fiber optic transceiver. A and B dual subsystems share a set of fiber optic transceiver chassis. The self-check signal is used to indicate the working condition of the control and protection system itself, the normal self-check indicates that the valve control is working normally, and the self-check failure indicates that the control and protection system itself has a fault and request system switching.
[0021] Failure with external interface:
[0022] 1) FCK404 receiving coordination controller active system IEC60044-8 communication failure;
[0023] 2) FCK404 receiving angle current sampling and over-limit signal optical fiber communication failure;
[0024] 3) The backup system receives the data communication fiber channel failure of the active system (FCK401);
[0025] 4) The backup system receives the self-checking fiber channel failure of the active system (FCK404);
[0026] 5) The standby system receives the active signal from the active system, the fiber channel failure (FCK404);
[0027] Communication failure between chassis:
[0028] 1) FCK404 receives FCK401 communication failure;
[0029] 2) FCK401 receives FCK404 communication failure;
[0030] 3) FCK401 receiving FCK402 communication failure;
[0031] 4) FCK402 receives FCK401 communication failure;
[0032] 5) FCK402 receives FCK403 communication failure;
[0033] 6) FCK403 receives FCK402 communication failure;
[0034] 7) FCK403 main control board receiving fiber optic transceiver board communication failure;
[0035] Independent Fibre Channel failure:
[0036] 1) FCK401 receiving active signal fiber failure;
[0037] 2) FCK402 receiving active signal fiber failure;
[0038] 3) FCK402 receiving synchronization signal fiber failure;
[0039] 4) FCK402 receives carrier synchronization signal fiber failure;
[0040] 5) FCK403 receiving active signal fiber failure;
[0041] 6) FCK403 receiving synchronization signal fiber failure;
[0042] 7) FCK403 receiving emergency lock fiber failure;
[0043] 8) FCK404 receives FCK401, three-phase FCK402's self-check independent fiber channel failure;
[0044] 9) FCK404 receives FCK401, three-phase FCK402 and three-phase FCK403 trip independent fiber channel faults;
[0045] 10) FCK404 judges that it has received a synchronization signal failure;
[0046] The power module of the control cabinet is faulty:
[0047] 1) FCK404 has detected a failure of the power module of the control cabinet chassis;
[0048] 2) FCK404 detects that the binary input and output power module is faulty.
