An Automatic Reactive Power Compensation Controller
A compensation controller and automatic technology, applied in the direction of reactive power compensation, AC network voltage adjustment, etc., can solve the problems of not improving the voltage quality of the line side in time, large seasonal load changes, and unbalanced load distribution, etc., to achieve a solution Too frequent switching, accurate data, avoiding the effect of reactive power and overcompensation
Active Publication Date: 2018-07-27
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +2
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] At present, the automatic reactive power compensation controllers on the market use the voltage threshold to control reactive power switching using the delay method. However, in rural areas, due to the uneven load distribution and large seasonal load changes, they are installed on the line side as line segment compensation. The reactive power compensation device often encounters that the delay time is set short, and the reactive power switching is frequent. If the delay time is set too long, the voltage quality of the line side cannot be improved in time when there is a short "low voltage" on the rural line side.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] Install a portable multi-adaptive voltage regulation automatic reactive power compensation device on the branch line of the rural low-voltage line or on the pole at the end of the user.
[0025] Such as figure 1 As shown, the portable multi-adaptive voltage regulation automatic reactive power compensation device includes a box body, in which a current transformer, an automatic reactive power compensation controller, a residual current action protector, a circuit breaker, an intelligent capacitor, a zinc oxide arrester, and a box body are installed. 3×25 copper bars are installed on the upper part of the body, and the entry and exit terminals are connected to the copper bars. The down-leads of the copper bars are connected to the upper end of the residual current action protector through the A, B, and C phase current transformers, and the upper end of the residual current action protector is the first circuit The lead wire is connected to the voltage sampling terminal of...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an automatic reactive power compensation controller, which includes a DSP processor, a voltage sampling circuit, a current sampling circuit, and a memory. The DSP processor is provided with a threshold value preset module and a data processing module. The module presets the delay threshold and the voltage switching threshold and stores them in the memory, the voltage sampling circuit performs voltage data collection according to the preset delay threshold, and the data processing module combines the collected voltage data with the preset The voltage switching threshold is compared and the action of the smart capacitor is controlled according to the comparison result. The present invention uses the preset delay threshold on the DSP processor, which can be set freely according to the characteristics of the actual rural public load and seasonal changes, so that the average value obtained by collecting and calculating the voltage or current data 5 times per wave is more accurate , so as to avoid the fluctuation of the value data and cause the automatic reactive power compensation controller to frequently send intelligent capacitor switching instructions.
Description
technical field [0001] The invention relates to reactive power compensation technology. Background technique [0002] At present, the automatic reactive power compensation controllers on the market use the voltage threshold to control reactive power switching using the delay method. However, in rural areas, due to the uneven load distribution and large seasonal load changes, they are installed on the line side as line segment compensation. The reactive power compensation device often encounters that the delay time is set short, and the reactive power switching is frequent. If the delay time is set too long, the voltage quality of the line side cannot be improved in time when there is a short "low voltage" on the rural line side. . [0003] Therefore, how to use an effective judgment method to make the automatic reactive power compensation controller send timely instructions and at the same time avoid frequent switching actions of smart capacitors is an urgent problem to be ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/16
CPCH02J3/16Y02E40/30
Inventor 吴宇红徐淦荣徐国华蔡金明盛跃峰纪涛王新华沈永强路昌明张杰朱腾海
Owner HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD