Electric power system node voltage automatic adjusting method

A node voltage and power system technology, applied in the direction of AC network voltage adjustment, circuit devices, AC network circuits, etc., can solve problems such as low adjustment efficiency, save man-hours, and improve calculation and analysis efficiency.

CN108376984AActive Publication Date: 2018-08-07YUNNAN POWER GRID +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-08-07

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Abstract

The invention provides an electric power system node voltage automatic adjusting method, and refers to a cycle process; the method can adjust for many times, can solve the sensitivity of a PV node onan off-limit node voltage, and can solve the sensitivity of a reactive compensation node on an off-limit node voltage, thus obtaining the optimal PV node voltage adjusting amount and the reactive compensation node reactive adjusting amount. In an adjusting process, no artificial intervention is needed except giving the target voltage and voltage allowable deviation of each off-limit node, thus solving the problems that an artificial node voltage adjusting mode is time and labor wasting; in electric power system trend analysis, the method can greatly save work hours, thus improving the calculation and analysis efficiency. When the two sensitivities are solved, the automatic adjusting method mainly employs calculation methods that have no convergence problem, such as matrix inversion, matrixpartitioning, and matrix multiplication; the whole adjusting method is good in convergence, and can automatically finish the adjustments.
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Description

technical field

[0001] The invention belongs to the technical field of automatic processing of electric power systems, and in particular relates to an automatic adjustment method for node voltages of electric power systems. Background technique

[0002] The power system is a system formed by connecting many power stations, substations, distribution stations, users, etc. by transmission and distribution lines. When the power system is running, under the excitation of the power supply potential, the current or power flows from the power supply to the load through each component of the system, and is distributed throughout the power grid, which is called power flow. Power system dispatching and planning departments generally use power system analysis software such as PSD-PBA, PSS / E, and PSASP to conduct simulation analysis of power systems when conducting dispatching, rules, and power system research. In the process of simulation analysis, it is often necessary to adjust the p...

Examples

Embodiment Construction

[0043] The invention provides a method for automatically adjusting the node voltage of a power system, which solves the problem of low adjustment efficiency existing in the existing manual way of adjusting the node voltage of the power system.

[0044] Below in conjunction with specific embodiment, in conjunction with appendix figure 1 , which illustrates the primary adjustment process of the method for automatically adjusting node voltages of the power system provided by the present invention.

[0045] A method for automatically adjusting node voltages in a power system, comprising the following steps:

[0046] First of all, because when a voltage adjustment is performed, the voltage of each node changes. In order to fully grasp the positional relationship of the nodes, it is convenient to make reasonable adjustments in combination with the purpose of grade adjustment. Firstly, in step S1, the total number of all nodes in the power system to be adjusted should be counted, an...