Programmable control method of microcomputer complex protection device

A comprehensive protection device and programming control technology, which is applied in computer control, electrical program control, emergency protection circuit devices, etc., can solve the problems of non-cross use and mutual independence, and achieve expanded functions, high practical value, and expanded use range Effect

Inactive Publication Date: 2008-12-03
上海中发电力自动化有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems brought by the use of conventional relays in the prior art, such as that the switch value input, analog value input and relay output are

Method used

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  • Programmable control method of microcomputer complex protection device
  • Programmable control method of microcomputer complex protection device
  • Programmable control method of microcomputer complex protection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]The following takes the most commonly used system structure single bus segment system in substations or substations as an example to illustrate the specific application of the programmable control system of the microcomputer comprehensive protection device of the present invention. The structure is composed of two incoming lines and a contact cabinet. One incoming line is used as the main power supply to supply power to the busbars at both ends through the connection cabinet, and the other is used as a backup power supply. When the main power supply fails, the backup power supply will continue to supply power, and the conventional standby automatic switching function is used.

[0048] The logic block diagram in the prior art is as image 3 As shown in the figure, the standby automatic switch function has a standby automatic switch charging process before the action, and only after the charging process is completed and the operating conditions are met, the standby automati...

Embodiment 2

[0069] The specific application of the programmable control system of the microcomputer comprehensive protection device of the present invention will be described below by taking another commonly used start-up fan operation in a substation or substation as an example. When the transformer works for a certain period of time, it will generate heat. If the temperature is too high, it will It will cause damage to the transformer itself. At this time, it is necessary to start the fan to cool down. Specific steps are as follows:

[0070] ① Connect the over-temperature node signal sent by the transformer to the input port of the third switching value of the integrated protection device of the microcomputer. The input port corresponds to the internal equipment number IN03, and connect the position signal node of the circuit breaker to the microcomputer On the input port of the first switching value of the comprehensive protection device, this port corresponds to the number of the inte...

Embodiment 3

[0077] The specific application of the programmable control system of the microcomputer comprehensive protection device of the present invention will be described below by taking the locking remote operation used in the substation or substation as an example. Generally, there are two places to operate the closing and opening of the circuit breaker, one It is on the switch cabinet where the circuit breaker is installed, which is called local operation; the other is in the control room with a certain distance from the circuit breaker, which is called remote operation. The operation of the circuit breaker is not allowed in two places at the same time of. In this way, a transfer switch must be installed in one of the places, and the node issued by the transfer switch is blocked.

[0078] Utilize the concrete steps of the programmable control method of microcomputer comprehensive protection device of the present invention as follows:

[0079] ① Connect the blocking node signal sen...

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PUM

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Abstract

The invention relates to a programmable control method used for a micro-computer integrated protective device, comprising the steps as follows: (1) external analogs which comply with the application conditions are input into the micro-computer integrated protective device; (2) the switching value is input inside the micro-computer integrated protective device; (3) detailed output ports of the micro-computer integrated protective device are selected; (4) a custom event is made for the input and output combination and the type of the custom event is selected; (5) an analog input module, a switching value input module and a signal output module which are selected are programmed by a logic operation program in a computer which is connected with the micro-computer integrated protective device; after the programming is completed, the programs are downloaded to the micro-computer integrated protective device; (6) when the external conditions comply with the program running conditions, the micro-computer integrated protective device outputs the signals to the external connection device so as to realize the pre-arranged functions. The programmable control method of the micro-computer integrated protective device of the invention is convenient for the programming application of the user according to the detailed conditions, extends the functions of the original micro-computer integrated protective device and enlarges the application range.

Description

technical field [0001] The invention relates to a microcomputer comprehensive protection device, in particular to a programmable control method for a microcomputer comprehensive protection device. Background technique [0002] Relay protection products have developed from early electromagnetic relays through integrated circuit relays to the current integrated protection, measurement and control devices based on microcomputers. [0003] The microcomputer comprehensive protection device in the prior art generally integrates various commonly used protection functions into the same device, and selects whether to switch on or off according to different usage requirements. Such as figure 1 as shown, figure 1 It is the working principle diagram of the microcomputer comprehensive protection device in the prior art. It can be seen from the figure that the logical transportation steps in the prior art are the input of analog and switch values, which are all in accordance with the p...

Claims

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Application Information

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IPC IPC(8): H02H3/00H02H7/00G05B19/05G05B15/02
Inventor 吕超
Owner 上海中发电力自动化有限公司
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