Product introduction
The Relay Protection Test Set is the "quality inspector" and "trainer" for the "guardians" of modern power system security and stability. By precisely, flexibly, and intelligently simulating various power system conditions and faults, it conducts comprehensive testing, calibration, and debugging of microprocessor-based protection devices. This ensures these devices remain in optimal condition, ready to perform their protective functions flawlessly when real faults strike. It is a critical piece of technical equipment for guaranteeing the safe, reliable, and economical operation of the power grid. As relay protection technology and power systems evolve, test sets are continuously advancing towards higher precision, stronger simulation capabilities, greater intelligence/automation, and better support for digital substations .
Product Parameters Of relay protection test set
| Current channel number | Standard 6 phase |
| Voltage channel number | Standard 6 phase |
| AC current output range | 30A/phase or 180A (six parallel) |
| DC current output range | 10ADC/phase |
| AC voltage output range | 120VAC/phase |
| DC voltage output range | 160VDC/phase |
AC current output
| 6 phase current output per phase (effective value) | 0 ~ 30A output precision 0.2 |
| 3 phase current output per phase (effective value) | 0～60A |
| 6 phase parallel current output (RMS) | 0～180A |
| Phase current long-term allowable working value (RMS) | 10A |
| Maximum output power of phase current | 300VA |
| 6 phase parallel current maximum output power) | 1000VA |
| 6 Allowable working time for maximum output of phase parallel current | 10s |
| Frequency range (fundamental) | 0～1000Hz |
| Harmonic frequency | 1～20 |
DC current output
| Current output | 0 ~ ±10A/phase output accuracy 0.5 level |
| Maximum output load voltage | 20V |
AC voltage output
| Phase voltage output (RMS) | 0 ~ 120V output precision 0.2 |
| Line voltage output (RMS) | 0～240V |
| Phase voltage/line voltage output work | 80VA/100VA |
| Frequency range (fundamental) | 0～1000Hz |
| Harmonic frequency | 1～20 |
DC voltage output
| Phase voltage output amplitude | 0 ~ ±160V output accuracy 0.5 |
| Line voltage output amplitude | 0～±320V |
| Phase voltage/line voltage output power | 70VA/140VA |
Switching value
| 8 switch inputs | Null contact 1 ~ 20mA, 24V |
| Potential contact access "0" : 0 ~ +6V; 1: +11 V to +250 V | |
| 4 pairs of switching output | DC：220 V／0.2 A;AC：220 V／0.5 A |
Time measuring range
| Time measuring range | 0.1ms ～ 9999s |
| Measurement accuracy | 0＜0.1mS |
| Volume | 375×350×180 (mm3) |
| Unit weight | 17kg |
advantages of relay protection test set
1. High precision testing:
The microcomputer relay protection tester adopts high-performance digital signal processing technology and high-precision analog-to-digital converter, which can generate more accurate test signals and measure the response of the tested relay protection device more accurately. This high precision ensures the accuracy and reliability of the test results.
2. Comprehensive functions:
This relay protection test set has multiple testing functions and can simulate various power system faults (such as short circuit, overload, voltage loss, frequency deviation, etc.), test the protection characteristics of various relay protection devices (such as action time, action current, action voltage, etc.), and perform complex calibration work and fault playback. These functions enable the tester to comprehensively evaluate the performance of relay protection devices.
3. Efficient automatic testing:
The microcomputer relay protection test set can automatically complete the testing process and generate test reports, greatly improving testing efficiency. This reduces manual operation time and errors, making testing work faster and more accurate.
4. Convenient operation:
Testers are generally equipped with a human-machine interface, which can intuitively display test results and can be operated using a keyboard or mouse, making the operation more convenient. At the same time, the tester also has intelligent prompts and fault self checking functions, which help users quickly solve problems during operation.
5. Compact and lightweight:
Compared to traditional relay protection devices, the microcomputer rrelay protection test set adopts integrated circuit technology, which is smaller in size, lighter in weight, and easier to carry and use. This is particularly suitable for on-site testing and flow testing, improving the flexibility and convenience of testing.
6. Easy to maintain:
The software of the tester can be upgraded, and the testing functions can be updated according to the development of the relay protection device, making maintenance more convenient. At the same time, the tester also has comprehensive fault diagnosis and repair functions, which help users quickly solve equipment failures.
7. High reliability and stability:
Adopting stricter production and quality control standards, it has higher anti-interference and stability, and can operate stably in harsh environments, ensuring the accuracy of test results.
Application Scenarios
equipment debugging
During the debugging process of power equipment, relay protection test sets can be used to test the performance indicators and functional integrity of the equipment. By simulating the normal and abnormal operating states of the power system, the relay protection tester can detect potential problems with the equipment, repair them in a timely manner, and ensure that the equipment meets the specified technical standards before being put into operation.
maintenance
The maintenance and upkeep of electrical equipment is a crucial step in ensuring the stable operation of the power system. Relay protection test set can be used to evaluate the operating status of equipment, detect potential faults or performance degradation, and take preventive measures in a timely manner. In addition, the relay protection tester can also be used to calibrate equipment parameters, ensuring the accuracy and reliability of the equipment.
troubleshooting
When power equipment malfunctions, the relay protection test set can provide accurate fault analysis and location, helping maintenance personnel quickly find the cause of the fault. By simulating normal and abnormal operating states, the tester can detect the fault points of the equipment, provide strong technical support for maintenance work, shorten the time for fault repair, and reduce the impact on the power system.
FAQ
1. What are the main scenarios in which the relay protection test set is used?
Mainly used in power substations, power plants, factories and mining enterprises, etc., for factory acceptance, on-site verification, fault analysis, etc. of various microcomputer relay protection devices.
2. Why is the "relay protection tester" called a "guardian"?
It can simulate various fault conditions, detect whether the protective device can timely and accurately cut off the faulty line when a fault occurs, thereby protecting the safety of the power grid and equipment, just like a guardian.
3. What are the characteristics of a good relay protection test set?
It should have the characteristics of high precision, multifunctionality, easy operation, strong data storage and analysis capabilities. The testing equipment of Wuhan UHV Power Technology Co., Ltd. has done quite well in this regard.
4. What does the "fixed value" of relay protection device mean?
Fixed value "refers to various parameters set in the relay protection device, such as operating current, delay time, etc. The accuracy of these values directly affects whether the protective device can correctly judge and act.
5. What professional knowledge is required for conducting relay protection testing?
It is necessary to master the basic principles of power systems, relay protection principles, the structure and working mode of microcomputer protection devices, relevant testing procedures and standards, etc.
6. Can the microcomputer relay protection test set be used near live equipment?
not allow. The microcomputer relay protection test set can only be connected for measurement after confirming that the tested equipment is completely powered off, tested, and grounded.
7. How long does the battery life of the relay protection test set last?
It can work continuously for about 4 to 6 hours when fully charged. It is recommended to prepare a backup battery or use an external power adapter on site.
8. Is the measurement result of the relay protection test set greatly affected by temperature?
influential. When used within the ambient temperature range of 5 ℃ to 40 ℃, there may be deviations in measurement data at extreme temperatures.
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