Prevention control and emergent state aid decision-making method for multiple safety and stability constrains
A technology of safety and stability constraints and auxiliary decision-making, applied in the fields of preventive control and emergency state auxiliary decision-making calculation, it can solve complex high-dimensional nonlinear programming and other problems, and achieve the effect of ensuring safe and stable operation and improving calculation speed.
A technology of safety and stability constraints and auxiliary decision-making, applied in the fields of preventive control and emergency state auxiliary decision-making calculation, it can solve complex high-dimensional nonlinear programming and other problems, and achieve the effect of ensuring safe and stable operation and improving calculation speed.
CN102222162AInactive Publication Date: 2011-10-19NARI TECH CO LTD
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[0019] Combine below figure 1 , the method of the present invention is described in detail.
[0020] Step 1 describes that if the power grid is in an emergency state, the emergency state auxiliary decision calculation is first performed. If the power grid is not in an emergency state but there are safety and stability problems under the expected fault, then go to step 5 and directly carry out the auxiliary decision-making calculation of preventive control.
[0021] The second step describes the classification and ranking of various security and stability issues that will be considered when performing emergency aided decision-making calculations. The auxiliary decision of the same category is calculated serially according to the order of the calculation queue; the auxiliary decision of different categories can be considered for parallel calculation to improve the calculation speed. Between the auxiliary decision-making of serial calculation, after the previous auxiliary decis...
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The invention provides a prevention control and emergent state aid decision-making method for multiple safety and stability constrains, which comprises the following steps: when a power grid has an emergent state and a safety and stability problem of expected faults, carrying out emergent state aid decision-making calculation; classifying safety problems according to the strength of coupling degrees, and carrying out different types of aid decision-making calculation in a parallel mode so as to improve calculation speed; carrying out the same type of aid decision-making calculation by adopting a serial mode, and taking sensitivity information output by the calculation as stability constrains by sequent aid decision-making calculation to carry out calculation; combining control measures which are finally obtained according to importance indexes and sensitivity; and adopting recursion iteration to solve conflict problems of possible control schemes. In the method, the prevention control, the emergent state aid decision-making and the multiple safety and stability constrains are decoupled, and the method of decomposition coordination and recursion iteration is adopted to solve the problem of complex high-dimensional non-linear planning, so that optimized aid decision-making control measures meeting practical engineering requirements can be obtained.
Description
technical field [0001] The invention belongs to the technical field of electric power systems and automation thereof, and relates to a preventive control and emergency state assistant decision-making calculation method considering various safety and stability constraints. Background technique [0002] Power system stability problems can be divided into different types according to their nature, including transient stability, dynamic stability, static voltage stability, frequency stability, etc. In addition to stability issues, all electrical equipment in operation must operate within magnitude and time limits of their permissible current, voltage and frequency. Unsafe consequences may lead to damage to electrical equipment. For the power system, security and stability are the most basic and indispensable conditions for the normal operation of the power system. [0003] Auxiliary decision-making of preventive control aims at the potential safety and stability problems after...
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Patent Timeline
19 Oct 2011
Publication
CN102222162A
- IPC
- G06F19/00; H02J3/00
- Inventors
- 鲍颜红; 徐泰山