An Online Calculation Method of Dynamic Power Flow in 10kV Distribution Network
A technology of dynamic power flow and calculation methods, applied in calculation, electrical digital data processing, instruments, etc., can solve problems such as safety and economy without online simulation calculations, and no effective solutions, achieving stability and pertinence performance, wide application range and accurate calculation method
Active Publication Date: 2015-09-09
JIANGSU ELECTRIC POWER CO +4
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Problems solved by technology
[0002] Power flow calculation is an important technology to ensure the safe and economical operation of the distribution network. In the traditional distribution network, it is generally based on experience to judge how the reactive power compensation and voltage regulation equipment operates, but such actions are not judged by online simulation calculations. Safety and economy; How to predict and control the actions of reactive power compensation and voltage regulating equipment has become an urgent problem to be solved. At present, there is no effective solution to this problem
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[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0036] Such as figure 1 As shown, firstly, an online calculation method for dynamic power flow of 10kV distribution network, using the established 10kV distribution network and reactive power compensation and voltage regulation equipment including: power substation on-load tap changer, 10kV line capacitor, 0.38 / 0.22 kV capacitor, active power filter (APF) and series voltage regulating transformer, etc., according to the generality of the distribution network power flow static equation to derive its dynamic equation, the derivation steps are as follows.
[0037] Step 1: Carry out real-time analysis and calculation of the current power flow of the distribution network according to the online calculation method of the power flow of the distribution network.
[0038] Step 2: Perform dynamic power flow analysis on how the actions of reactive power compensation an...
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The invention relates to an online calculation method for dynamic power flow of a 10kV distribution network. The method is a calculation method capable of quantitatively analyzing how the action of reactive power compensation and voltage regulation equipment changes the power flow The equipment in the distribution network state includes: power substation on-load tap changer, 10kV line capacitor, 0.38 / 0.22kV capacitor, active power filter (APF) and series tap changer transformer, according to the generality of the distribution network flow static equation to deduce the dynamic equation; the present invention can accurately predict the impact of reactive power compensation and voltage regulation equipment actions on the distribution network through the calculation method, making it possible to optimize the economic operation of the distribution network, and solve the current 10kV and The calculation method is accurate, stable and pertinent, and has a wide range of applications for the following problems in the online calculation of distribution network dynamic power flow.
Description
technical field [0001] The invention relates to the technical field of economic operation analysis of a power system, in particular to a calculation method capable of quantitatively analyzing how reactive power compensation and voltage regulating equipment actions change power flow. Background technique [0002] Power flow calculation is an important technology to ensure the safe and economical operation of the distribution network. In the traditional distribution network, it is generally based on experience to judge how the reactive power compensation and voltage regulation equipment operates, but such actions are not judged by online simulation calculations. Safety and economy; How to predict and control the actions of reactive power compensation and voltage regulating equipment has become an urgent problem to be solved. At present, there is no effective solution to this problem. Contents of the invention [0003] The technical problem solved by the present invention is ...
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IPC IPC(8): G06F19/00
Inventor 许杏桃徐小康王益明陈群黄昕俞孝湖何菲李祥明张澄
Owner JIANGSU ELECTRIC POWER CO