Distribution automation system mainly consists of main substation, data communication system and distribution automation remote terminations, the remote termination is the connection port between automation system and primary equipment.
BC3600-I distribution automation remote termination (hereinafter called FTU) as the core unit of distribution automation system, mainly perform the functions of local acquisition of AC measured parameters (such as voltage, current, power, energy and etc) and status parameters (such as the position of breaker, charging status of the operating mechanism), and execute the command from remote control center (such as: tripping the breaker)
FTU can choose RS232、RS48、power line wave carrier、or optical fiber (optical MODEM self-provided, able to communicate directly with optical fiber), the FTU can connect with SCADA of main substation, and perform the protective and supervision functions on distribution line.
FTU is widely used in the 10KV distribution line, to supervise the load switch, sectionalizer, or interconnection switch of ring main system.
High reliability: It is our generation III design theory for the microcomputer protection hardware, several new technologies have been used to improve the reliability of hardware, main CPU is DSP chipset, any output signal will be dual supervised, to avoid the errors.
High anti-interference: The parts of device to connect outside adopt several treatments such as electromagnetic isolation, optical isolation and etc, to improve the anti-interference ability.
High intelligence: The software contains several smart calculations, which can still perform fault disconnection, network reconstruction, power supply auto recovery and etc even if the communication function of this device is lost; it can save 5 sets of definite values at maxi, smart lower value definition is used, very convenient and reliable.
High accuracy: The measurement unit adopts the professional high precise chipset, protection unit used hi-speed, high accurate A/D conversion module, when input signal changing within 45~55Hz, it can perform the data acquisition normally.
High extensibility: The typical configuration of FTU can be based on one or two feeders, and able to extend the outputs according user request, the whole device has such advantages as low power consumption, small size, easy to install, able to cooperate with different switches, suitable for different working sites and etc.
Intelligent control mode, support two kinds of control modes: remote central control and local logic control mode; it can perform automatic distribution independent of communication system, also used as backup for central control mode; absorbed the merits of these two control modes, the local control mode remain valid while the communication line from remote control center has fault or other problem.
Local logic control mode covering: current-time type, voltage-time type, current & voltage - time type (you can choose any one)
Current-time type: quick trip, time delayed trip, definite time limit over-current, inverse time limit over-current, later speed-up trip, quick trip under zero-sequence fault, time delayed trip under zero-sequence fault, definite time limit over-current under zero-sequence fault, inverse time limit over-current under zero-sequence fault, reclosing (1~3 cycles), under-voltage tripping, over-voltage tripping, zero-sequence over-voltage tripping.
Voltage-time type: T1 time limit interlocked, two power sources interlocked, T3 instantaneous increased voltage interlocked, T2 time limit interlocked.
Current & voltage -
time type: T1 time limit interlocked, two power sources interlocked, T3
instantaneous increased voltage interlocked, T2 time limit interlocked (with
current detection function).
Note: The function of each item refers to the operation manual.