Distribution network harmonic measuring device based on synchronization vector
A technology of measuring devices and synchronization vectors, which is applied in the direction of frequency measuring devices, etc., can solve problems such as system performance degradation
Pending Publication Date: 2018-11-06
GUANGDONG POWER GRID CO LTD +1
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Insufficient detection may result in a significant decrease in system performance
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[0021] like Figures 1 to 2 Shown is an embodiment of a harmonic measurement device for overhead power transmission lines based on synchronous vectors in the present invention. The measurement device includes several GPS measurement modules 1, several harmonic measurement modules 2, measurement protection circuits 3, several wireless transmission modules 4, GPS The measurement module 1 and the harmonic measurement module 2 are connected in parallel and are both electrically connected to the measurement protection circuit 3, the measurement protection circuit 3 is electrically connected to the wireless transmission module 4, and the control system includes a wireless reception module 5, a single chip microcomputer 6, a micro-processing Device 7, wireless transmitting module 4 is electrically connected with wireless receiving module 5.
[0022] Wherein, the measurement protection circuit 3 can connect the protection circuit in series in the circuit to provide protection by detec...
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The invention relates to an electric energy quality measurement device and particularly relates to an overhead transmission line harmonic measuring device based on a synchronization vector. The measurement device comprises multiple GPS measurement modules, multiple harmonic measurement modules, a measurement protection circuit and multiple wireless emission modules, wherein the GPS measurement modules and the harmonic measurement modules are connected in parallel and are electrically connected with the measurement protection circuit, the measurement protection circuit is electrically connectedwith the wireless emission modules, a control system comprises a wireless reception module, a single-chip microcomputer and a micro processor which are sequentially electrically connected, and the wireless emission modules are electrically connected with the wireless reception module. The overhead transmission line harmonic measurement device based on the synchronization vector is advantaged in that through setting the multiple GPS measurement modules and the multiple harmonic measurement modules, and through analysis of synchronous acquisition of the distribution network circuit at differentpositions, effective fixed-point fault detection is realized, and harmonic monitoring of the whole network can be further realized.
Description
technical field [0001] The invention relates to a power quality measuring device, which mainly relates to a harmonic measuring device for an overhead power transmission line based on a synchronous vector. Background technique [0002] With the development of economy and technology, a large number of applications of switching power supply and thyristor devices have improved the utilization efficiency of electric energy. At the same time, nonlinear electric energy conversion has introduced a large number of harmonic currents into the power grid. And because the harmonics in the power grid will not only overload the neutral line current of the power grid and affect the transportation capacity, but also cause electromagnetic interference to other electrical equipment and affect the normal operation of the equipment, so the harmonic problem in the power grid is received by everyone. focus on. At present, the harmonic measurement methods used in the distribution network are low-p...
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IPC IPC(8): G01R23/02
CPCG01R23/02
Inventor 郑楚韬陈中明秦川王伟冠何其淼庞伟林陈君宇陈春泉凌忠标李斌
Owner GUANGDONG POWER GRID CO LTD