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Due to the role of the high-voltage switchgear power-on test bench in the power system and its importance for the safe continuous power supply of the power system, it is required that the relay protection must have certain performance and characteristics, and therefore the relay protection worker should also propose corresponding Claim. The high-voltage switchgear power-on test bench is an organic whole consisting of many complex primary equipments and Auxiliary Equipment such as secondary protection, control, regulation, and signals. Each device has its own unique operating characteristics and operating conditions at the time of the fault. The failure of the high-voltage switchgear power-on test bench will immediately cause changes or destruction of the system's normal operating conditions, which will affect other equipment and the entire system to varying degrees. Therefore, the work of relay protection of the high-voltage switchgear power-on test bench involves each electrical main equipment and secondary auxiliary equipment, requiring the relay protection worker to work on the operating principle, performance, parameter calculation and fault status of the high-voltage switchgear power-on test bench. The analysis has a deep understanding and extensive knowledge of production operations. In addition, there must be a clear concept for the planning and design principles of the entire power system, the basis for formulating the operating modes, the theory of voltage and ground rate transfer, the method for calculating the trend and stability, and the principles and methods of economic dispatch and safety control.
The high-voltage switchgear power-on test bench is a comprehensive subject. It is based on basic theories such as theoretical electrical engineering, electrical engineering, and power system analysis, as well as new theories and technologies such as electronic technology, communication technology, computer technology, and information science. close relationship. Looking at the history of the development of high-voltage switchgear power-on test benches, it can be seen that every major development in power system communication technology has led to the emergence of a new protection principle, such as high-frequency protection, microwave protection, and fiber protection; The emergence of new electronic components also caused a revolution in relay protection devices. The high-voltage switchgear power-on test bench developed from the electromechanical relay to the protection of the body tube, the integrated circuit protection device and the protection of the microcomputer fully illustrate this problem. At present, the protection of microcomputers and the realization of optical fiber communication and information networks are making a fundamental change in the appearance of relay protection technology.
Some new theories, new concepts and new methods will appear in the design, manufacture and operation of high-voltage switchgear power-on test benches. From this it can be seen that relay protection workers should pay close attention to the development of new theories, new technologies, and new materials in neighboring disciplines, actively and cautiously apply various new technological achievements, and continuously develop the theory of relay protection and improve its technology. Level and reliability indicators, improve the performance of the protection device to ensure the safe operation of the power system. The high-voltage switchgear power-on test bench needs to use the theoretical knowledge of the courses he has learned to analyze the system fault conditions and the protective device's action behavior. It is also necessary to carry out laboratory tests, digital simulation analysis, and dynamic simulation of the power system on the relay protection device. Tests, on-site manual failure tests, and test runs under field conditions.
The high-voltage switchgear power-on test bench adopts a separate transformer for boosting and direct current to avoid burning down the voltage regulator. The digital voltage and current meter is adopted, and the precision is higher. The anodized aluminum oxide panel is more resistant to dirt, wear, and appearance. The high-voltage switchgear power-on test bench is widely used in high- and low-voltage switchgear manufacturers to conduct various power tests on the manufactured high- and low-voltage switchgear before leaving the factory. YTC1106 high and low voltage switch cabinet power test bench can provide a variety of AC and DC power supply, easy to switch cabinet detection, improve work efficiency. Integrate a variety of AC and DC power supplies to facilitate the detection of switch cabinets and greatly increase work efficiency.