Detailed introduction to the functional characteristics of relay protection tester

Relay protection tester is an important equipment used to test relay protection devices in power systems. Here is a detailed introduction to it:

1. Definition and Function

The relay protection tester is a universal testing device for relay protection, mainly used for testing and researching electromagnetic, integrated circuit, and microcomputer based protection relays and protection systems of various voltage levels. It can achieve flexible control of voltage and current amplitude, phase frequency, and has dedicated testing modules for various relays and protections. This equipment is a necessary tool for commissioning and regular inspection of protective devices in basic units of electric power before they are put into operation.

2. Working principle

The working principle of the relay protection tester mainly includes the following steps:

① Set test parameters: Operators set test parameters in the control unit according to specific testing requirements, including fault type, fault location, voltage and current magnitude, etc.

② Simulate faults and abnormal operating states: The signal generator simulates various faults and abnormal operating states of the power system based on the set test parameters, and generates corresponding test signals.

③ Transmission test signal: The test signal is transmitted to the relay protection device through the test channel, triggering the protection action.

④ Trigger protection action: After receiving the test signal, the relay protection device triggers the corresponding protection action according to the set protection logic and parameters, such as tripping, alarm, etc.

⑤ Record and analyze test results: The control unit records various parameters and results during the testing process, including fault type, fault location, protection action type, action time, etc. The operator analyzes and judges the performance and status of the relay protection device, as well as the working status and accuracy of the tester itself, based on the recorded test results.

3. Performance characteristics

① High precision: The accuracy of relay protection testers is usually very high, which can accurately simulate various faults and abnormal states of the power system.

② Multi functional: It has multiple testing modules that can meet the testing needs of different types of protective relays.

③ Flexible control: It can flexibly control the amplitude and phase frequency of voltage and current, facilitating various complex tests.

④ Safe and reliable: The equipment has complete protection functions, such as automatic alarm when the current source is open or overloaded, ensuring the safety and reliability of the testing process.

4. Application Fields

Relay protection testers are widely used in various fields of power systems, including power plants, substations, transmission lines, etc. It can not only be used for the commissioning and regular inspection of protective devices before operation, but also for technical research and development to improve the security and reliability of power systems.

5. Usage and maintenance

① Usage:

Power on the instrument and inspect its appearance.

Set test parameters, including fault type, fault location, voltage and current magnitude, etc.

Simulate faults and abnormal operating conditions to generate test signals.

Transmit test signals and trigger protective actions.

Record and analyze test results.

② Maintenance and upkeep:

Regularly inspect and calibrate instruments to ensure their accuracy and reliability.

After use, the instrument should be cleaned and maintained in a timely manner to avoid damage from dust and dirt.

Pay attention to keeping the instrument dry and ventilated, and avoid the influence of humid and high-temperature environments on the instrument.

Regularly check the power cord and interface of the instrument to ensure a secure and reliable connection.

In summary, the relay protection tester is one of the indispensable and important equipment in the power system. Its high precision, multifunctionality, and flexible control characteristics make it play an important role in the testing and evaluation of protection devices.

ZCAR-1600 microcomputer relay protection tester adopts high performance industrial PC as the control microcomputer and Windows operating system can be run on it directly.The whole process of the test and the test results are displayed on the liquid crystal display screen. English interface, Clear, intuitive and convenient.

ZCAR-1600 microcomputer relay protection tester is an important test tool to ensure the safety and reliability of power system operation.With the rapid development of computer technology, microelectronics technology and power electronics technology, it is an inevitable trend to launch new high performance relay protection test equipment by applying the latest technical achievements. ZCAR-1600 microcomputer relay protection tester is developed based on the standards of Technical conditions of microcomputer relay protection test device which was published by electric power department originally, referenced and summarized development and production experience, adopted modern latest new digital technology, high precision electronic parts, micro system with new circuits and new structure.It Can independently complete test of microcomputer protection, relay protection, excitation, measurement, fault recording and other professional fields tests, widely used in electric power, petrochemical, metallurgy, railway, aviation, military and other industries of scientific research, production and electrical test site.

Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com