Receiving end power grid phase modifier dispatching method considering short-circuit current and system frequency voltage risks
A technology of short-circuit current and system frequency, applied in the direction of AC network voltage adjustment, power network operating system integration, information technology support system, etc., can solve problems such as aggravating the difficulty of operating mode arrangement, and achieve the effect of improving flexibility
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[0043] The present invention will be described in further detail below with reference to the accompanying drawings and examples.
[0044] figure 1 Step 1 in the above describes, for each DC, calculate the DC effective short-circuit ratio and the multi-feed DC interaction factor after the operation mode is changed, and determine the DC commutation failure risk of the location where the condenser is connected. The critical DC power that bears multiple commutation failures determines the risk of DC blocking, and the risk of system frequency instability after exiting the condenser is obtained by integrating the risk of DC commutation failure and DC blocking risk. Specifically include the following steps:
[0045] Step 1-1 describes that the AC system at the receiving end has L 1 , L 2 ,...,L n ,...,L m A total of m circuits of DC, of which the inverter side of the n circuits of DC feed-in are equipped with condensers, and the DC transmission power in the system operation mo...
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