Design requirements of microcomputer relay protection device:
(1) microcomputer relay protection device should have anti-electromagnetic disturbance ability.
(2) microcomputer relay protection device should be equipped with online automatic detection. In the microcomputer relay protection device in the microcomputer part of any damage should be issued when the device abnormal information, and when necessary, automatic locking corresponding protection. However, the design of the exit loop of the protection device should be simple, and it is not suitable to increase the components that may reduce the safety in this loop in order to realize the complete self-inspection of the exit loop.
(3) All output terminals of microcomputer relay protection device should not be electrically connected with its weak current system.
(4) the microcomputer relay protection device should be equipped with self-recovery circuit. When the program dies due to interference, it should be able to work normally by self-recovery.
(5) the microcomputer relay protection device should not lose the report when the power supply is disconnected.
(6) microcomputer relay protection device should have timing function.
(7) For the same type of microcomputer relay protection device stop section should stipulate a unified setting symbol.
(8) The microcomputer relay protection device of 110Kv and above power system should have the function of measuring the distance of fault point.
(9) Star connection is recommended for current transformer used in microcomputer transformer protection device, and its phase compensation and current compensation coefficient are realized by software.
(10) Both ends of the same line should be configured with the same type of microcomputer high frequency protection.
(11) the same microcomputer relay protection device group screen scheme should not be too much.
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