Method and system for controlling exit relays

Abstract

The invention discloses a method and a system for controlling exit relays. The method includes displaying operable items on a control homepage of a trip table; modifying control parameters and storing the modified control parameters into a database of the trip table; modifying the trip table; selecting required exit protection; and judging actual conditions of various exits and then setting exit parameters meeting actual requirements. Under the condition that the quantity of the exit relays is not increased or is only slightly increased, possibility of meeting special requirements of users to the exit relays is increased, the trip table is modified via a human-computer operation interface, external connecting wires of the corresponding exit relays are changed, a large amount of time is saved, and economic loss caused by shutdown of equipment is reduced; and when the users have new requirements on setting of the exit relays, the trip table can be modified via the human-computer interface at any time as long as the quantity of the relays meets the requirements, running and maintenance costs are greatly lowered, and further, the problem that existing exit relays cannot be flexibly configured is solved.

Description

technical field [0001] The invention belongs to the technical field of electrical control, and in particular relates to a control method and system for an outlet relay. Background technique [0002] At present, in the domestic power system relay protection industry, the relay protection devices all adopt the method of fixed outlet relays, that is, corresponding to a certain protection function, the number and position of the outlet relays have been given in the software, if you want to change the The number or position of the outlet relay corresponding to the protection function can only be solved by replacing the hardware or modifying the device software. For example, in the software of the relay protection device, corresponding to the overcurrent stage I, exit relays 1, 2, and 3 have been defined as the exit relays of this protection function. When the device detects that the condition for overcurrent stage I action is met , No. 1, 2, and 3 exit relays will act simultaneo...

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Problems solved by technology

[0004] The present invention develops corresponding products for some special requirements existing in the existing relay protection products, resulting in numerous product models, which greatly increases the cost of the products; if the export relay fails, the method of replacing the hardware is often adopted, replacing the hardware and re-downloading The software has a long time period and requires manpower and material resources, which will cause great losses; with the increase of substation load and the growth of users, more export relays are needed. Generally, the hardware and device software are constantly replaced or the follow-up may be needed in the early stage. The functions are reserved for realization, which increases the purchase and maintenance costs of equipment and other disadvantages. A trip table is proposed

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