Calculation method for second-order sensitivity of distribution network voltage based on holomorphic function embedding method
A calculation method and technology of distribution network, applied in the field of electric power information, to achieve good economy, reduce system network loss, and less investment
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[0110] The present invention will be further described below in conjunction with accompanying drawing.
[0111] a. Reference figure 1 , the present invention follows the steps:
[0112] b. Step (1): Establish a mathematical model of the distribution network:
[0113]
[0114]
[0115] In the formula: P i , Q i , V i respectively inject active power, reactive power and voltage at node i; G ij , B ij ,δ ij Respectively, conductance, susceptance and phase angle difference between nodes i and j; N is the total number of nodes.
[0116] c. Use HELM (holomorphic function embedding method) for power flow calculation.
[0117] From the nodal power equation
[0118]
[0119] Constructs an inline pure virtual function
[0120]
[0121] suppose
[0122] When s=0, you can get:
[0123]
[0124] From this formula we can find c k [0].
[0125]
[0126] According to the coefficients of the S series are equal, it can be known that d k [0]=1 / c k [0].
[012...
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