Power generation and maintenance plan joint optimization method and system for AC/DC power transmission network
A technology of maintenance planning and joint optimization, applied in AC network circuits, AC networks with the same frequency from different sources, and information technology support systems, etc., can solve problems such as the inability to effectively ensure power grid security
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[0097] Tie-line: A branch circuit of electrical equipment such as lines and transformers connecting two control areas.
[0098] N-1 power grid security (N-1 security): disconnect each branch without failure, and the power flow of the power grid has no limit.
[0099] The maintenance of power transmission and transformation equipment will cause sudden changes in network topology, power flow transfer and reduction of section limits, and its impact on power generation is reflected in the power grid security constraints. Therefore, the joint optimization model should not only consider the conventional constraints of power generation and maintenance, but also the influence of power flow transfer and changes in safety and stability limits. However, the existing literature deals with the above issues less. At present, there are some studies on the joint optimization of power generation and maintenance plans, but there is no report on the N-1 safety analysis of AC and DC transmission ...
Embodiment 1
[0101] see figure 1 As shown, the present invention provides a combined optimization method for power generation and maintenance plan of AC and DC transmission network, considering N-1 fault, and specifically includes the following steps:
[0102] S1: Receive a request for the joint optimization of the power generation and maintenance plan of the AC and DC transmission network; establish a base state power flow model for the joint optimization of the power generation and maintenance plan of the AC and DC transmission network;
[0103] S2: According to the request, mathematical optimization software such as CPLEX is used to solve the problem, and the constraints are used to solve the objective function of the pre-established base-state power flow model for the joint optimization of the power generation and maintenance plan of the AC and DC transmission network, and obtain the power generation and maintenance of the AC and DC transmission network. planning a joint optimization s...
Embodiment 2
[0146] see figure 2 As shown, the present invention provides a combined optimization device for power generation and maintenance plan of ledger AC and DC transmission network, including:
[0147] The receiving module is used to receive the joint optimization request of the power generation and maintenance plan of the AC and DC transmission network;
[0148] Invoking the solving module, used for invoking the constraints according to the request to solve the objective function of the pre-established base-state power flow model for the joint optimization of the power generation and maintenance plan of the AC and DC transmission network, and obtaining the joint optimization scheme of the power generation and the maintenance plan of the AC and DC transmission network; The constraint conditions include considering the AC line N-1 constraint and considering the DC line N-1 constraint;
[0149] The output module is used to output the joint optimization scheme of AC and DC transmissi...
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