Protection control system, protection control device and merging unit
A protection control and power system technology, applied in emergency protection circuit devices, emergency protection devices for automatic disconnection, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve problems such as increased hardware costs
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no. 1 Embodiment approach
[0029] use figure 1 The structure of the protection control system of 1st Embodiment is demonstrated. figure 1 It is a figure which shows the structure of the protection control system 100.
[0030] The protection control system 100 includes an MU (Merging Unit) 101 , a process bus 103 , and protection control devices 105 to 108 .
[0031] MU101 detects the electric quantity of CT (Current Transformer) and VT (Voltage Transformer) installed in the power system (not shown), and outputs it to process bus 103 as electric quantity information. Moreover, MU101 receives trip information from the process bus 103, and outputs the trip instruction|command for opening the circuit breaker which is not shown, when a trip condition is satisfied. The detailed description of the trip information here will be described later, and the trip information represents 87 trip information, 44 / 51G trip information, B87G / B87S trip information, 27F trip information, 51DF / 64F trip information and 27F / 6...
no. 2 Embodiment approach
[0094] use Figure 9 The protection control system 100 of the second embodiment will be described, but the same reference numerals will be assigned to the same configurations of the present embodiment as those of the first embodiment, and description will be omitted. The configuration of this embodiment differs from the first embodiment in that MU 102 and process bus 104 are further provided, and protection control device 108 is replaced by protection control device 108 - 2 .
[0095] MU102 has the same function and structure as MU101, and process bus 104 has the same function and structure as process bus 103. In addition, the protection control devices 105 to 107 and 108 - 2 are connected to the process buses 103 and 104 .
[0096] The protection control device 108-2 is constituted by a computer including a CPU, a memory, and the like. The protection control device 108 - 2 is different from the protection control device 108 of the first embodiment in that it is connected to...
no. 3 Embodiment approach
[0103] use Figure 11 The protection control system 100 of the third embodiment will be described, and the same reference numerals will be assigned to the same configurations of the present embodiment as those of the first embodiment, and description will be omitted. The configuration of this embodiment differs from the first embodiment in that the protection control system 100 further includes the MU 102 and the process bus 104 , and the protection control device 108 is replaced by a protection control device 108 - 3 . Furthermore, MU101 and MU102 are connected by a cable 109 .
[0104] MU102 has the same function and structure as MU101, and process bus 104 has the same function and structure as process bus 103. In addition, the protection control devices 105 to 108 - 3 are connected to the process buses 103 and 104 .
[0105] Protection control device 108 - 3 has substantially the same configuration as protection control device 108 of the first embodiment, but is different...
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