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Meter relay control method

A relay control and relay technology, applied in program control, computer control, general control system, etc., can solve the problems of large amount of code modification, high maintenance cost and test cost, so as to improve operation speed, reduce maintenance cost and test cost. , the effect of state transition expression simplification

Active Publication Date: 2020-10-02
YANTAI DONGFANG WISDOM ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of the relay control logic, the amount of code modification is very large, which brings high maintenance costs and testing costs

Method used

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  • Meter relay control method
  • Meter relay control method

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Experimental program
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Embodiment Construction

[0024] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0025] This embodiment takes a typical control logic of a relay as an example, and the specific control requirements of the relay are as follows:

[0026] 1. When the account balance is detected to be 0, the relay trips immediately;

[0027] 2. After the account is recharged, the balance is greater than 0 and the cover has not been opened, the relay will close immediately, otherwise it will not act;

[0028] 3. When the cover is detected, the relay trips immediately;

[0029] 4. After the cover is opened, that is, after the cover is closed, the relay does not act;

[0030] 5. When the trip command is received, it will trip immediately;

[0031] 6. After receiving the switch-on command, if the cover does not open and the account balance is greater than 0, and the user presses the button to confirm, the switch will be closed, otherwise no action will b...

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PUM

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Abstract

The invention discloses an ammeter relay control method. The method comprises the following steps that: (A) input variables related to the actions of a relay, all possible states of the relay, and additional actions needing to be executed when the relay is switched between all the states are gathered; (B) logic scripts are set, state conversion expressions recorded in the logic scripts are used for expressing conversion conditions for converting the relay from one state to another state, wherein each state conversion expression corresponds to one additional action; and (C) state conversion isperformed according to the input variables and the logic scripts. The invention provides a relay control scheme with a clear structure. When control logic changes each time, only a plurality of rows of scripts need to be modified, so that maintenance cost and test cost are reduced.

Description

technical field [0001] The invention relates to a method of controlling a relay. Background technique [0002] The relay is a very critical device in the smart meter and plays an important role in the load control. For example, when the user's account balance is exhausted, the load is disconnected through the relay, and when a grid fault (such as overvoltage) is detected, the relay jumps off in time to protect the user's electrical equipment, etc. [0003] As the electrical equipment becomes more and more complex, users also put forward more complex requirements for the control logic of the relay. After the station issues the switch-on command, the meter cannot be closed immediately, and the user needs to press the button to confirm before closing; the master station issues a trip command, and if the meter is in an overcurrent state, it will wait until the overcurrent state disappears before tripping. [0004] Different users have different requirements for the control log...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/045G07F15/00
CPCG05B19/045G07F15/003
Inventor 刘笑菲马建坤张奔刘国栋伍韬张玉猛魏鹏付鹏
Owner YANTAI DONGFANG WISDOM ELECTRIC