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Method for automatically testing and recording rated value of SF6 gas density relay

A gas density, automatic testing technology, applied in the measurement of electrical variables, circuit breaker testing, instruments and other directions, can solve the problems of inconvenience, difficult to test accurate, troublesome, etc., to achieve the effect of easy storage

Active Publication Date: 2011-06-29
SHANGHAI ROYE ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the above, it can be seen that the calibration of these instruments can only be calibrated by traditional methods, and it is difficult to test accurately, because the reading judgment is due to human factors, and it often happens that the pointer is on the non-scale line, which depends entirely on human estimation. People often have different results; at present, there are some test instruments that can read on the market, which eliminates the above errors. However, if these instruments want to process data, they must record the data with a pen, and it can be done manually or by re-entering the computer. processing, which is very cumbersome and inconvenient

Method used

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  • Method for automatically testing and recording rated value of SF6 gas density relay
  • Method for automatically testing and recording rated value of SF6 gas density relay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] According to the use requirements of the calibrator, firstly connect the peripheral gas circuit and circuit, and start to enter the calibration state. Use the man-machine interface 5 of the calibrator to first input the rated value parameter value of the relay to be tested: the rated value Pe and its accuracy ΔP; enter the test number of the relay being tested. Enter the menu (status) of 'Validation Rating': According to the pointer of the test product, observe the indicated value of the test product, and first adjust the pressure to just the rated value of the test product, that is, the pointer of the test product just points to the rated value Pe, Then press the rated value test command key, the present embodiment is to press the 'ENTER' key, (the rated value test command key form can be flexible and diverse, not limited, for example, an external selection button, keyboard or switch can be used; the keyboard on the LCD can be used , you can also use the touch screen o...

Embodiment 2

[0027] According to the use requirements of the calibrator, firstly connect the peripheral air circuit and the circuit, and start to enter the calibration state. Use the man-machine interface 5 of the calibrator to first input the accuracy requirement ΔP of the rated value Pe of the density relay to be tested; Then enter the test number of the relay being tested. Enter the menu (status) of 'Validation Rating': According to the pointer of the test product, observe the indicated value of the test product, and first adjust the pressure to just the rated value of the test product, that is, the pointer of the test product just points to the rated value Pe, Then press the rated value test command key, in this embodiment, press the 'ENTER' key, (the rated value test command key form can be flexible and diverse, without limitation, for example, an external selection button, keyboard or switch can be used; the keyboard on the LCD can be used , can also be operated by touching the touch...

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Abstract

The invention relates to a method for automatically testing and recording a rated value for an SF6 gas density relay and includes a checking apparatus. The checking apparatus includes a gas source supplying mechanism with adjustable pressure, at least one pressure sensor, a temperature sensor, a computer data processing system and a display screen. The computer data processing system is provided with a relay action signal input port. The method includes the following steps: step 1, the indicating value of a test product is observed according to a pointer of the test product and the pressure is regulated just to a rated value of the test product, namely the pointer of the test product just points at the rated value Pe; step 2, a command key is tested according to the rated value; the checking apparatus automatically records a pressure value P and a temperature value T of the current pressure sensor and the temperature sensor; step 3, corresponding pressure value Pe test is converted automatically at the temperature of 20 DEG C according to the pressure-temperature characteristic relation of the SF6 gas; step 4, the checking apparatus automatically carries out correcting on the tested Pe test according to the linear relation of the pressure sensor and the temperature sensor and stores the test result.

Description

technical field [0001] The present invention relates to SF 6 The invention relates to a test method for a gas density relay, in particular to a method capable of automatically testing and recording the rated value of a density relay. Background technique [0002] SF 6 Electrical products have been widely used in the power sector, industrial and mining enterprises, and promoted the rapid development of the power industry. How to guarantee SF 6 The reliable and safe operation of electrical products has become one of the important tasks of the power sector. SF 6 Gas density relay is SF 6 One of the key components of electrical switches, it is used to detect SF 6 SF in the electrical equipment body 6 The change of gas density, its performance directly affects the SF 6 Reliable and safe operation of electrical equipment. SF installed on site 6 Due to the infrequent action of the gas density relay, after a period of time, the phenomenon of inflexible action or poor conta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N9/00G01R35/02G01R31/327
Inventor 苏丽芳
Owner SHANGHAI ROYE ELECTRICAL CO LTD