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A dry-type shunt reactor protection method based on temperature and temperature rise monitoring

A technology of reactors and temperature sensors, which is applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as the protection problems of dry-type shunt reactors, and achieve the effects of simple operation, accurate criteria, and extended service life

Active Publication Date: 2017-07-28
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

In actual operation, it often happens that the dry-type shunt reactor has caught fire but the over-current protection has not yet acted, which shows that the over-current protection cannot solve the protection problem before the dry-type shunt reactor is damaged, and it is necessary to explore dry-type A New Protection Mode of Shunt Reactor

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  • A dry-type shunt reactor protection method based on temperature and temperature rise monitoring

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Embodiment Construction

[0013] Attached below figure 1 , To further explain the present invention:

[0014] A dry-type shunt reactor protection method based on temperature and temperature rise monitoring. The feature of the present invention is that a temperature sensor is attached to the hottest position of each package of the dry-type shunt reactor to obtain each package (a total of n packages). ) Real-time hottest temperature data (T i , I = 1, 2, 3,..., n), and real-time monitoring of the ambient temperature (T 0 ), so as to obtain the real-time temperature of each envelope of the dry shunt reactor (T i , I = 1, 2, 3,..., n) and temperature rise data (K i = T i -T 0 , I=1, 2, 3,...,n). The real-time temperature (T i , I = 1, 2, 3,..., n) and the temperature setting value (T) to identify the abnormal state and give an alarm; through each package real-time temperature (T i , I = 1, 2, 3,..., n) lateral deviation The comparison with the set value (δ) identifies the abnormal state and gives an alarm; t...

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Abstract

The invention discloses a dry-type paralleling reactor protection method based on temperature and temperature rise monitoring. Temperature sensors are attached to the hottest spot positions of packs of a dry-type paralleling reactor to obtain real-time hottest spot temperature data (Ti, i=1, 2, 3, ..., n) of the n packs, and monitor surrounding temperature (T0) in real time, and therefore real-time temperatures (Ti, i=1, 2, 3, ..., n) and temperature rise data (Ki=Ti-T0, i=1, 2, 3, ..., n) of the packs of the dry-type paralleling reactor are obtained. By the adoption of the dry-type paralleling reactor protection method, the dry-type paralleling reactor can be effectively prevented from being damaged in the running process, and timeliness and reliability of dry-type paralleling reactor protection are improved.

Description

Technical field [0001] The invention relates to a protection method for 10kV and 35kV dry-type parallel reactors, belonging to the field of dry-type parallel reactor protection. Background technique [0002] 10kV and 35kV dry-type shunt reactors are important reactive power compensation equipment in the power grid. In power operation, dry shunt reactors are widely used as maintenance-free products. In recent years, dry-type shunt reactors have been damaged during operation, and high encapsulation temperature or temperature rise is an important reason for the damage of dry-type shunt reactors. In operation, dry-type shunt reactor generates heat due to its own loss on the one hand, and on the other hand, abnormal heat is caused by abnormal conditions such as encapsulated wire breakage and overload. [0003] At present, infrared imagers are usually used to detect the temperature of the outer envelope of the dry-type shunt reactor. The inner envelope is blocked by the outer envelope ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/00
Inventor 王耀龙陈宇民姜虹云
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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