An Adaptive Overload Protection Method for Transmission Lines Considering Dynamic Thermal Characteristics
A technology for overload protection and transmission lines, which is applied to emergency protection devices that automatically disconnect, protection that responds to overcurrent, and circuit devices. It can solve problems such as line damage and cascading failures, and achieve accurate removal and delay Effect of resection and risk reduction
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[0060] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0061] like figure 1 The invention discloses an adaptive overload protection method for a transmission line that takes into account dynamic thermal characteristics, comprising the following steps:
[0062] S101 , sampling the current amplitude of the transmission line in real time, and when the current amplitude of the transmission line is greater than the maximum allowable current amplitude of the transmission line, it is determined that the transmission line is overloaded, and step S102 is performed;
[0063] S102, the overload protection starts, and the power of the transmission line is sampled every Δt time;
[0064] S103. Compare the sampled power of the transmission line and the allowable long-term running power of the line. If the power of the transmission line is less than the allowable long-term running power of the line, the protection is returned,...
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