A voltage transformer online error measurement system and method
A voltage transformer and error measurement technology, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of heavy detection workload of voltage transformers, inability of transformers to detect power outages, time-consuming and labor-intensive problems, etc.
Active Publication Date: 2020-11-17
CHINA ELECTRIC POWER RES INST +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in actual testing, it is found that the transformers used in some lines cannot detect power outages, and power outage detection will affect people's normal life and production
Although power failure detection is performed on some lines, the off-line error detection of voltage transformers has a large workload and is time-consuming and laborious, and the real data of the three-phase live state cannot be obtained
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
[0072] For detailed and complete disclosure of the present description with reference now to the drawings exemplary embodiments of the present invention, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, these embodiments are provided invention, and will fully convey the scope of the invention to those skilled in the art. For the exemplary embodiments represented in the drawings in terms are not intended to limit the present invention. In the drawings, the same elements / components the same reference numerals.
[0073] Unless otherwise stated, terms used herein (including technical and scientific terms) has a generally understood meaning of those skilled in the art. In addition, it is understood that, in order to commonly used dictionaries define the term, the context should be understood as its related fields have the same meaning, and should not be interpreted in an idealized or overly formal sense.
...
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 relates to a voltage transformer online error measurement system. The system comprises an off-line detection unit, an online detection unit, a correction unit, a comparison unit and a result determination unit, wherein the off-line detection unit determines factory error data according to capacitance distribution of a capacitive voltage transformer when leaving the factory, and determines handover error data according to capacitance distribution of the capacitive voltage transformer during a field handover test; the online detection unit determines online error data according toa connection mode of the capacitive voltage transformer in a substation; the correction unit performs correction on the online error data by using secondary load correction, grid frequency correctionand temperature coefficient correction to obtain corrected online error data; the compression unit determines a comparison result of the error data and benchmark data when there is an electromagneticvoltage transformer in the substation or there is no electromagnetic voltage transformer in the substation; and the result determination unit determines an actual error of the voltage transformer according to the factory error data, the handover error data, the corrected online error data and the comparison result.
Description
Technical field [0001] The present invention relates to the field of power metering, and more particularly, to a line voltage transformer error measurement system and method. Background technique [0002] In recent years, my country's power industry has been developing rapidly, the voltage level of the power system continues to improve, and sharp increase in generating capacity and electricity consumption. Meanwhile, with the power system reform, in particular the separation, energy measurement accuracy and fairness of generation and transmission has aroused great concern in the community. Voltage transformer is an important part of the gateway energy measurement apparatus. To ensure reliable voltage transformer put into operation, according to "works of electrical installations electrical equipment handover test standard" voltage transformer installed in the field need to be completed after the handover test. Over test site where the error is a very important part of the transfe...
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): G01R35/02
Inventor 王欢项琼岳长喜汪本进余春雨朱凯
Owner CHINA ELECTRIC POWER RES INST