Large-capacity three-phase and single-phase relay protection vector simulation system

Abstract

The invention discloses a high-capacity three-phase and single-phase relay protection vector simulating system comprising an operation control system, a voltage input device, a measuring system and tested equipment. The operation control system is connected with the voltage input device and the measuring system which are both connected with the tested equipment, and comprises a control panel and an industrial personal computer with a wireless system, the control panel and the industrial personal computer are communicated through wireless connection, and the wireless system is connected with a compensation capacitor and a magnetic excitation switch of the voltage input device. The high-capacity three-phase and single-phase relay protection vector simulating system applies high voltage and current on power transmission and transformation primary equipment on testing site of a transformer substation and converts the high voltage and current into secondary voltage and secondary current of the lower voltage through a current transformer and a voltage transformer. Wireless and wired modes of control can be realized. Voltage and current vector parameter values applied on the primary equipment can be displayed stably, accurately and visually, and accordingly, different vector voltage and current can be applied on the testing equipment. Besides, safety potential hazards and adverse effects on running production of a power grid are avoided.

Description

technical field [0001] The invention relates to a high-voltage test appliance, in particular to a large-capacity three-phase and single-phase relay protection vector simulation system. Background technique [0002] With the rapid development of the power industry, the requirements for relay protection of power systems are getting higher and higher. Traditional relay protection products can no longer meet these requirements and are being phased out. The structure has the following problems: first, it is bulky and heavy, which does not meet the actual situation of on-site protection; second, it has a single function, which does not meet the changing on-site operation conditions, and the cost of the equipment is also high; third, it needs to adjust the voltage during operation. Multiple operations are performed on circuit breakers, analog circuit breakers, etc., and the values ​​of various parameters cannot be displayed intuitively, and the operations are complicated and inconv...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the power industry, the requirements for the relay protection of the power system are getting higher and higher. The traditional relay protection products can no longer meet these requirements and are being phased out. The structure has the following problems: first, it is bulky and heavy, which does not meet the actual situation of on-site protection; second, it has a single function, which does not meet the changing on-site operation conditions, and the cost of the equipment is also high; third, it needs to adjust the voltage during operation. Perform multiple operations on circuit breakers, analog circuit breakers, etc., and the values ​​of various parameters cannot be displayed intuitively, and the operations are complicated and inconvenient

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