Online monitoring and pre-warning protection method and system for high-voltage switch cabinet
A high-voltage switchgear and protection system technology, applied in the field of electric power equipment, can solve problems such as failure of the busbar, early warning of contact temperature rise, etc., and achieve the effect of ensuring the safety of power supply
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[0046] Example 1
[0047] Such as figure 1 As shown, the present invention proposes an online monitoring and early warning protection method for high-voltage switchgear. Specifically, the method includes the following steps:
[0048] S101. Collect and store the temperature data of each bus or contact of the high-voltage switchgear in real time, and transmit it to the monitoring server;
[0049] S102. The monitoring server receives the temperature data, generates a temperature curve within a preset time period of each of the bus bars or the contacts, and performs wavelet packet transform denoising processing on the temperature curve;
[0050] S103: Obtain a non-equal interval temperature sequence of each bus or contact within a preset time period according to the temperature curve after denoising processing;
[0051] S104. Construct a second-order difference equation for predicting the temperature, fit the second-order difference equation by using the non-equal interval temperature sequ...
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[0098] Example 2
[0099] Based on the same invention concept, such as image 3 , 4 As shown, the present invention also provides an online monitoring and early warning protection system for high-voltage switchgear, including a data acquisition device 20, a communication device 30, and a monitoring server 60. The data acquisition device 20 is provided in each high-voltage switchgear 10, It is used to collect temperature data of the bus bar or the contact in the high-voltage switchgear 10 in real time; the communication device 30 is used to transmit the temperature data of the bus or the contact to the monitoring server 60, and the monitoring server 60 receives and processes the temperature data of the bus or the contact, predicts the predicted temperature of each bus or the contact after a preset time, and sends out an alarm.
[0100] Wherein, the high-voltage switchgear online monitoring and early warning protection system further includes an electromagnetic cutting device 40, the...
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