A powerless optimization compensation method for 10KV distribution network unit line
A technology of power distribution network and compensation method, which is applied in the field of power transmission and distribution, can solve the problems of shortening the service life and complexity of switches and capacitors, and achieve the effects of avoiding frequent switching, improving voltage quality, and high power factor
Inactive Publication Date: 2009-09-02
保定学峰实业有限公司
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But this will inevitably lead to the complexity of the structure of the compensation device and the frequent switching of capacitors, shortening the service life of switches and capacitors
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[0032] figure 1 It is a schematic diagram of radiation lines. All radiation single lines in the 10KV power distribution network can be regarded as independent unit lines. figure 2 It is a schematic diagram of the ring network line, and the ring network line can be separated into relatively independent unit lines through topology analysis. Through the terminal equipment (including: high-voltage reactive power compensation device, low-voltage power distribution monitoring and reactive power compensation device, power distribution monitoring device, line condition monitor) to monitor the load and reactive power changes of all distribution transformers and lines on the unit line Real-time monitoring is carried out, and the monitoring data is sent to the background (software) management system through remote communication (wireless or wired). Location, quantity, and capacity configuration structures.
[0033] The implementation method is introduced in detail as follows:
[003...
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The invention relates to a reactive power optimization compensation approach of a 10KV distribution network unit line, belonging to the power transmission and distribution technology field. The approach is used to solve the reactive power optimization compensation problem of the high-voltage distribution network. The technical proposal is that: first, the flow of the active and reactive power of the unit line and the length and resistance of each section of line are monitored and measured; then, conductors of different models are converted into conductors of same length but different models, and an equivalent length line change curve of the converted reactive power is drawn; then, based on the compensation quantity same principle, the position and quantity of compensation point and compensation capacity are defined on the curve, the position of compensation point is reduced as the actual line position and each compensation point is configured with a compensation capacitor. By reasonably choosing the position and quantity of high-voltage compensation and determination the capacity configuration structure of capacitor, the invention is capable of not only enhancing the power factor, but also avoiding the frequent switching of capacitor, thus prolonging the service life of the compensation device and effectively decreasing the line damaging rate.
Description
technical field [0001] The invention relates to an optimal configuration method for reactive power compensation of a power supply system, belonging to the technical field of power transmission and distribution. Background technique [0002] In order to improve the power factor of the distribution network load, save electric energy and reduce the cost of power supply, reactive power compensation should be carried out on the 10KV distribution network. Due to the large topology range and complex structure of the 10KV power distribution network, there are certain disadvantages in adopting reactive power centralized compensation. When multi-point compensation is used, if the position and quantity of compensation points and the compensation capacitor structure of each compensation point cannot be reasonably selected, it is impossible to achieve a good compensation effect. [0003] The power factor of the 10KV power distribution network load fluctuates greatly in a day. For the co...
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IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 郭英顺
Owner 保定学峰实业有限公司