Method for analyzing loop closing risks based on interconnection switch in power distribution network
A technology of contact switch and distribution network, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of long time consumption, large safety margin, huge calculation amount, etc., and achieve great social and economic benefits, calculation The result has high accuracy and the effect of avoiding power outage accidents
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[0023] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0024] refer to figure 1 As shown, a method for risk analysis of loop closure based on a tie switch in a distribution network of the present invention includes the following steps:
[0025] Step 1, obtain the voltage difference on both sides of the tie switch;
[0026] Step 2, splicing the CIM model of the transmission network and the CIM of the distribution network to form a closed loop path, and calculate the loop impedance of the closed loop path;
[0027] Step 3, according to the voltage difference on both sides of the tie switch and the loop impedance of the loop-closing path, calculate the loop-closing steady-state current and the maximum inrush current;
[0028] Step 4: Use the loop closing impact current and the loop closing steady state current to check the safety of all devices on the loop to determine whether the loop can be closed.
[0029] The contact ...
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