Dynamic reactive power optimization method for extra-high voltage direct current near-region power grid based on ADMM decoupling algorithm
A technology of UHV DC and decoupling algorithm, which is applied in the field of dynamic reactive power optimization of UHV DC near-area power grid based on ADMM decoupling algorithm, can solve problems such as low solution efficiency, parameter setting, and weight value optimization results have great influence, etc. Achieve the effect of reducing the search space, fewer discrete variables, and reliable solutions
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Embodiment 1
[0115] see Figure 1 to Figure 10 , a dynamic reactive power optimization method for UHV DC near-area grid based on ADMM decoupling algorithm, including the following steps:
[0116] 1) Establish the dynamic reactive power optimization model of the UHV DC near-area power grid considering the variable operating range of the converter bus voltage. The objective function of the network loss target of the dynamic reactive power optimization model of the AC-DC system is as follows:
[0117]
[0118] In the formula, the superscript t represents the time period t, T is the number of time periods, and ΔT t Indicates the length of time period t; and Respectively represent the active power of generator (converter) i, load j and converter station k, if the converter station is a rectifier station s P,k = 1, if the converter station is an inverter station s P,k =-1;N G , N L and N D Respectively represent the number of generator (converter) nodes, load nodes and converter stat...
Embodiment 2
[0208] The embodiment adopts the actual data of the ZLT converter station and its nearby AC power grid in Northeast my country. The example system includes 1 converter station, 15 substations and 9 power plants closely related to its electrical connection. The equivalent circuit diagram of its AC system is shown in Figure 4 , the number of AC bus nodes is 85, the number of generator nodes is 9; the number of parallel capacitive reactor reactive power compensation nodes is 18, among them, nodes 32, 34, 35, 37, 39, 42, 44, 45, 56, 58, 60 and 62 include two types of reactive power compensation devices, shunt capacitors and shunt reactors, and the number of groups of reactive power compensation devices of each node and each type = 1 to 4. See Table 1 to Table 7 for detailed parameters; See the equivalent circuit Figure 5 , the model parameters are shown in Table 8, the minimum filter table is shown in Table 9, and the DC system rated capacity P dN =10000MW, rated DC voltage U ...
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