Non-contact type converter valve temperature on-line monitoring method and device

A non-contact, converter valve technology, applied in the application of measuring devices, thermometers, thermometers, etc., can solve the problems of changing the electric field distribution of the converter valve, increasing the electric field, and being unsuitable for the on-line measurement method of the converter valve temperature, etc. Achieve the effect of good safety and high measurement accuracy

Inactive Publication Date: 2014-02-26
TIANSHENGQIAO BUREAU CSG EHV POWER TRANSMISSION CO
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Problems solved by technology

However, this method requires a large number of optical fibers to be installed on the converter valve. The biggest disadvantage is that it will change the electric field distribution on the converter valve, causing the local electric field to rise and threatening the effectiveness of the insulation.
[0007] From the above analysis, it can be seen that the existing converter valve temperature measurement methods have their own limitations, and are not suitable as an online converter valve temperature measurement method at present.

Method used

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  • Non-contact type converter valve temperature on-line monitoring method and device
  • Non-contact type converter valve temperature on-line monitoring method and device
  • Non-contact type converter valve temperature on-line monitoring method and device

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] See figure 1 , The terminal of the present invention includes a passive RFID temperature sensor (1), a non-contact card reader (2) and a processor (3). The passive RFID temperature sensor (1) does not need power supply, it is pasted on the surface of the radiator of the converter valve, and it is in the high potential area. The model of the passive RFID temperature sensor (1) used in this implementation is SAW-C1.

[0039] The non-contact card reader (2) that can emit and receive electromagnetic signals is placed in the safe area on the edge of the valve hall of the converter station, the passive RFID temperature sensor (1) and the non-contact card reader (2) are not in direct contact and There is no electrical connection, the two transmit signals through electromagnetic waves, the non-contact card reader (2) transmits energy and reads tempera...

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Abstract

The invention discloses a non-contact type converter valve temperature on-line monitoring method and device. The method comprises the steps that a temperature sensor located in a high potential area collects temperature data on the surface of a converter valve radiator, the temperature data are converted into digital signals which are transmitted to a receiving device located in a low potential area through electromagnetic wave carrier waves, the receiving device restores the received digital signals to be digital temperature signals, and the converter valve temperature is obtained according to the restored digital temperature signals. No direct electrical contact exists between a transmitter-receiver set and the temperature sensor located in the high potential area, and safety is good; the temperature sensor is directly arranged on the surface of the converter valve radiator, and precision is high; the non-contact type converter valve temperature on-line monitoring method and device can be directly applied to an intelligent converter station, and on-line monitoring of the converter valve temperature is achieved.

Description

technical field [0001] The invention belongs to the field of online monitoring of the operating state of a converter valve, and in particular relates to a non-contact online monitoring method and device for the temperature of a converter valve. Background technique [0002] The basic principle of high-voltage direct current transmission (HVDC) is to convert alternating current into direct current through a rectifier, and then convert direct current into alternating current through an inverter to realize power transmission and grid interconnection. The converter valve is the most important component in DC transmission. The converter valve is the bridge arm of the three-phase bridge converter needed to realize the conversion, and is the basic equipment unit of the converter that realizes the mutual conversion of AC and DC power. Its safe operation plays a central role in the entire DC transmission project. . The heat generated during the operation of the converter valve will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K13/00G08C17/02
Inventor 郑丰王金雄王磊郭树永张望平
Owner TIANSHENGQIAO BUREAU CSG EHV POWER TRANSMISSION CO
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