Valve tower temperature monitoring system and method

Abstract

The invention relates to a valve tower temperature monitoring system and method, and belongs to the technical field of direct current transmission. The valve tower temperature monitoring system comprises a valve control unit and thyristor control units of all thyristor levels in a valve layer, wherein each thyristor control unit is connected with a radiator temperature sensor and an environment temperature sensor, which are used for detecting the radiator temperature and the environment temperatureof each thyristor level; each thyristor control unit is used for judging that the current thyristor level is over-temperature when the over-temperature time of the radiator temperature exceeds a preset first time and the over-temperature time of the ambient temperature exceeds a preset second time, and sending the over-temperature information of the thyristor level to the valve control unit; and the valve control unit is used for judging that the valve layer is over-temperature when the number of the over-temperature thyristor levels in a certain valve layer exceeds a set upper limit. The valve tower temperature monitoring system can automatically measure the condition of each thyristor level, detection is reliable, equipment damage can be found in time according to information collected by the valve tower temperature monitoring system, and the position of possibly damaged equipment can be located immediately.

Description

technical field [0001] The invention belongs to the technical field of direct current transmission, and in particular relates to a valve tower temperature monitoring system and method. Background technique [0002] In the prior art, when the converter valve (also known as HVDC converter valve) in the HVDC converter station is in normal operation, the valve hall of the converter valve is set to a constant humidity and constant temperature environment, but the valve hall The operating environment will fluctuate with the change of parameters such as power, so the converter valve may operate in harsh environments, such as: high voltage, high current, vibration, etc. And these harsh environments inevitably lead to aging and even damage of components in the converter valve. Although the designed service life of the HVDC converter valve is more than 30 years, after long-term operation, the components in the converter valve, such as resistors, capacitors, optical fibers, and compon...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a valve tower temperature monitoring system and method, which are used to solve the problems of increasing the work intensity of the staff, unreliable equipment detection and failure to find equipment abnormalities in time in the prior art

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