Method for integrated evaluation of large-scale complex power grid
A comprehensive evaluation, large-scale technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve problems such as insufficient power grid reserve capacity, threats to the safe and stable operation of the power grid, and complex stability problems, and achieve the effect of deepening the content
Inactive Publication Date: 2008-08-13
JIANGSU ELECTRIC POWER RES INST
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Problems solved by technology
[0003] In recent years, with the continuous and rapid development of the regional economy and the rapid growth of load, the power supply capacity of the power grid has been put forward beyond the conventional development requirements. The reserve capacity of the power grid is insufficient, and the operation is under a small safety margin. It is necessary to adopt peak shifting, Effective measures such as peak avoidance, power rationing, and increased outsourced power consumption ensure the safe and stable operation of the power grid. In addition, with the rapid development of the installed capacity and scale of the power grid, the dynamic characteristics of the power grid have also undergone great changes, and stability issues have become more intricate and hidden. The loss of large power sources such as direct current transmission and nuclear power units will also pose a great threat to the safe and stable operation of the power grid, which may cause serious consequences
Method used
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Experimental program
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Embodiment Construction
[0014] The method for comprehensive evaluation of large-scale and complex power grids of the present invention, its specific principles are specifically described as follows:
[0015] (1) The first part of the technical plan: according to the scale and structure of the research grid, establish a model with components such as generators, transformers, transmission lines, loads, capacitive reactance, etc., build a basic calculation data platform for large-scale grids, and preset different Method arrangement, fault type and fault location scheme.
[0016] (2) The second part of the technical plan: for power grids with series compensation, direct current transmission, and nuclear power units, according to the purpose of the research, analyze the mathematical equations or variable transfer functions of each module, and according to the operating characteristics of different components and research priorities, automatically Define and establish a mathematical model. The simulation s...
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The invention provides a method for integrally estimating the large scale complicated power grid. This method sets up electromagnetic transient, electro mechanics transient theory analyzing models aiming at the complicated power system of different characteristics of the alternative power transmission, direct current power transmission and, nuclear power unit. This method adopts the self-defining modeling method to carry on the power grid assessment of current situation, and integral assessment transient stability, voltage stability, damping feature of the large scale power grid comprising series compensation, direct current, nuclear power. This method points out the weak link of the power grid and puts forward the corresponding solution plans. This method breaks out limits that use single method to analyze the single problem for the power grid; this method also deepens the content of the power grid analysis and provides technical support for entirely grasping operation situation of the power grid.
Description
technical field [0001] The present invention adopts the method of establishing mathematical models of electrical components with different characteristics, and comprehensively analyzes the stability problems of power systems with different mechanisms, carries out the simulation of electromagnetic transient state and electromechanical transient state, points out the weak link of the power grid, and proposes guidance planning operation, power grid three Suggestions on the configuration of road safety defense lines and other aspects. It belongs to the technical field of power system calculation and analysis. Background technique [0002] In 2003, the 8.14 blackout occurred in parts of the United States and Canada. The accident not only caused huge economic losses to the United States and Canada, but also had a profound impact on the development of the electric power industry all over the world. In 2003, large-scale power outages occurred in London, Italy, Denmark, Sweden and ...
Claims
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Inventor 夏成军孙蓉江林刘建坤孙志明徐贤
Owner JIANGSU ELECTRIC POWER RES INST