10kV power distribution network dynamic load flow online calculating method
A dynamic power flow and calculation method technology, applied in calculation, electrical digital data processing, instruments, etc., can solve the problems of no effective solution, no security and economy through online simulation calculation, and achieve stability and pertinence performance, wide application range and accurate calculation method
Active Publication Date: 2014-03-05
JIANGSU ELECTRIC POWER CO +4
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[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] like 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 and v...
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The invention relates to a 10kV power distribution network dynamic load flow online calculating method. According to the calculating method how the motions of a reactive compensation and voltage regulation device change the power distribution network load flow can be quantitatively analyzed, and a built 10kV power distribution network and devices which can change the state of the power distribution network and include a power transformer substation on-load voltage regulation switch, a 10kV circuit capacitor, a 0.38 / 0.22kV capacitor, an APF and a series voltage regulation transformer are utilized. A dynamic equation is derived according to universality of a power distribution load flow static equation. Through the calculating method, the influences of the motions of the reactive compensation and voltage regulation device on the power distribution network can be accurately predicted, economic operation optimization of the power distribution network becomes possible, and the difficult problem of existing 10kV and below power distribution network dynamic load flow online calculation is solved. The 10kV power distribution network dynamic load flow online calculating method is accurate, stable, targeted and wide in application range.
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