Generalized Galerkin-based high-order track sensitivity calculation method
A technology of trajectory sensitivity and calculation method, applied in AC network circuits, electrical components, circuit devices, etc., can solve problems such as cumbersome calculation process, and achieve the effects of fast solution speed, improved accuracy, and wide application range
Active Publication Date: 2018-03-30
ZHEJIANG UNIV +3
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By definition, the information of high-order items involves the high-order partial derivatives of state variables to control parameters, and the calculation process is relatively cumbersome. Therefore, a fast calculation method for high-order trajectory sensitivity based on the generalized Galerkin method is proposed
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[0043] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.
[0044] This embodiment takes a 9-node power system network as an example. The system has 3 generators, 3 loads and 9 branches. Branch data and generator parameters are listed in Table 1 and Table 2 respectively. The system power flow under normal operation is shown in Table 3, and the system frequency is 60Hz.
[0045]Table 1 branch data
[0046]
[0047]
[0048] Table 2 generator data
[0049]
[0050] Table 3 System power flow under normal operation
[00...
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The invention discloses a generalized Galerkin-based high-order track sensitivity calculation method, and belongs to the field of power system stability analysis and control. By proposing the generalized Galerkin-based high-order track sensitivity calculation method and considering high-order information, the accuracy of a power system during safety analysis and control is improved, and the degreeof state response affected by certain control parameters or an initial condition during the dynamic process of the system can be more comprehensively reflected; and meanwhile, a generalized Galerkinmethod is used during calculation of high-order track sensitivity, decoupling among projection equations is achieved by selecting a special test basis function, and the requirement of rapid calculation is compatible. The method can be applicable to various complicated dynamic processes of the power system, various conditions of the system during running can be comprehensively considered, the generalized Galerkin-based high-order track sensitivity calculation method is wide in application range and fast in solution speed, and a scientific and reasonable analysis scheme can be provided for safety and stability analysis and control of the power system.
Description
technical field [0001] The invention relates to the field of power system technology, in particular to the field of power system stability analysis and control, and proposes a high-order trajectory sensitivity calculation method based on generalized Galerkin. Background technique [0002] The power system is a complex nonlinear time-varying system. There are a large number of nonlinear elements in the power system. When these nonlinear elements are controlled, the state of the system will undergo complex changes; at the same time, the actions of relay protection devices, on-load tap changer and other elements will also cause The occurrence of discrete events makes the state variables of the system jump. Therefore, when analyzing the power system, it is necessary to deeply understand the influence of various parameters that affect the dynamic process of the power system on the dynamic response of the system. Trajectory sensitivity, as an effective tool in power system safet...
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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 夏冰清邱一苇吴浩宋永华周华孙维真楼伯良邓晖华文黄弘扬赵一琰
Owner ZHEJIANG UNIV