Electrical power system real-time probabilistic load flow online computing method
A probabilistic power flow and power system technology, applied in the direction of calculation, electrical components, circuit devices, etc., can solve problems such as inaccurate calculation results, high hardware and software investment costs, and complicated calculation processes, so as to reduce economic losses and reduce equipment investment costs , the effect of improving computational efficiency
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specific Embodiment approach 1
[0021] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the real-time probabilistic power flow online calculation method of the power system described in this embodiment, the specific process of this method is:
[0022] Step 1. Establish a joint probability distribution model among the characteristic quantities of the load-side operation mode according to the next period prediction information of the characteristic quantities of the load-side operation mode;
[0023] Step 2. Obtain the joint probability distribution among the characteristic quantities of the load-side operation mode according to the joint probability distribution model obtained in the first step;
[0024] Step 3: Sampling the joint probability distribution between the characteristic quantities of the load-side operation mode obtained in Step 2 to obtain a sampling sample set;
[0025] Step 4. Establish a joint probability distribution model between the characteris...
specific Embodiment approach 2
[0027] Specific implementation mode 2: This implementation mode further explains the implementation mode 1. The specific process of establishing the joint probability distribution model between the characteristic quantities of the load-side operation mode in step 1 is as follows:
[0028] Divide a system with N load nodes into M regions, and the kth region contains n load nodes k , the relationship among the three levels of total system load, regional load and node load is:
[0029] P ( t ) = Σ k = 1 M P k ( t ) - - - ( 1 )
[0030] P k ( t ) = ...
specific Embodiment approach 3
[0044] Specific implementation mode 3: This implementation mode further explains the implementation mode 2. The specific process of obtaining the joint probability distribution between the characteristic quantities of the load-side operation mode in step 2 is as follows:
[0045] Step 21. Divide N load nodes in a system into M areas, and the number of load nodes in the kth area is n k , to obtain the load power P of the lth load node in each period t in the kth area kl (t),(k=1,2,…,M;l=1,2,…,n k );
[0046] Step 22: Calculate the total load power P(t) of the system in each time period t, the ratio vector R(t) of the load power of the M regions to the total load power of the whole system, and the n in the kth region k The ratio vector T of the load power of a load node to the total load power of the kth area k (t),(k=1,2,...,M):
[0047] P k ( t ) = Σ ...
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