Method and device for power system analysis and processing
A power system and power loss technology, applied in the direction of power network operating system integration, circuit devices, information technology support systems, etc., can solve problems such as power outages, difficult to meet, unable to meet strategic strike comprehensiveness, fast calculation, etc.
Active Publication Date: 2021-06-11
中国兵器科学研究院
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[0003] The reason why the power system can cause large-scale power outages after a local attack is because the power system is a control system for real-time balance of power generation, transmission, distribution, and consumption. When a structural change or a component stops working in the power system , which may lead to uncontrollable and serious failure
[0004] In order to improve the anti-strike ability of urban power infrastructure, it is necessary to develop analysis of urban power infrastructure attack and defense and power dispatching schemes to support research, drills and command training of various action styles. However, with the massive access of distributed power sources, traffic The number of DC combined transmission lines is increasing, and the power system gradually presents pathological characteristics such as small impedance branches and heavy loads. The traditional AC optimal power flow is difficult to meet the needs of modern power systems, both in terms of solution efficiency and processing capacity for ill-conditioned power systems. requirements, and cannot meet the comprehensiveness, fast calculation and wide applicability of strike means required by specific strategic strikes
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[0226] As an optional implementation, the constraints corresponding to the generator cost are:
[0227] x=[P Gi , θ i ] T ,P Gi is the active output vector of the generator in the transmission network, θ i is the node voltage phase angle vector in the transmission network, a 2i ,a 1i ,a 0i is the generator cost characteristic parameter of generator i, n g is the number of generators.
[0228] Specifically, based on the network loss equivalent load diagram, the MDCOPF with the minimum loss degree of important load as the objective function is established:
[0229]
[0230] The constraints are the active power balance equations of each node in the transmission network, the active output constraints of each generator set in the transmission network, and the voltage phase angle constraints:
[0231]
[0232] P Gimin ≤P Gi ≤P Gimax
[0233] θ imin ≤θ i ≤θ imax
[0234] As an optional implementation, the constraints are:
[0235]
[0236] The Q i For th...
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The present invention provides a method and device for power system analysis and processing. The method includes performing a simulation strike test on the transmission network, and determining a first power loss parameter according to at least one first strike parameter obtained; The power grid performs a simulated strike test, and determines the second power loss parameter according to the obtained at least one second strike parameter; determines the comprehensive evaluation index of each distribution transformer connected to the power system according to the evaluation index of load importance; The first power loss parameter, the second power loss parameter, and the comprehensive evaluation index of each distribution transformer are used to reduce the number of distribution transformers connected to the power system. This method can be used to analyze the process of power infrastructure being attacked, analyze the way of power system failure in real time, and obtain effective solutions within a limited time, meeting military needs for comprehensiveness, fast calculation and wide applicability to strike means .
Description
technical field [0001] The invention relates to the field of power infrastructure protection, in particular to a method and device for power system analysis and processing. Background technique [0002] In the modern urban system, electricity is a very important form of energy. Once a large-scale power outage occurs, it will not only cause huge economic losses, but also make many key facilities unusable, causing urban dysfunction and people to fall into chaos. Therefore, electric power infrastructure has become an important strategic strike facility and has been closely watched by countries all over the world. [0003] The reason why the power system can cause large-scale power outages after a local attack is because the power system is a control system for real-time balance of power generation, transmission, distribution, and consumption. When a structural change or a component stops working in the power system , which may lead to uncontrollable and serious malfunctions. ...
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IPC IPC(8): H02J3/00H02J3/14H02J3/06H02J3/48
CPCH02J3/00H02J3/06H02J3/48H02J3/144H02J2203/10H02J2203/20Y02B70/3225Y04S20/222
Inventor 刘冰刘文霞李军郝东田建辉江金寿刘耕铭龚钢军叶金华何圣华陈科王晓悦
Owner 中国兵器科学研究院