Ultra-high voltage power grid and current load detection device
An ultra-high voltage and current technology, applied in the measurement device, the phase angle between voltage and current, and the measurement of current/voltage and other directions. , Reliable performance, improve work efficiency
Inactive Publication Date: 2017-05-10
NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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[0007] The purpose of the present invention is to provide a method that can effectively solve the problem that the sum current cannot be accurately detected in the on-site load detection, can accurately measure, calculate, display the active power and reactive power value of the sum current, and judge intuitively and clearly Check the six-phase current amplitude and phase, and whether the combined sum current amplitude and phase are correct, shorten the on-site load detection time, and improve work efficiency. Ultra-high voltage power grid and current load detection device
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[0017] see figure 1 , the ultra-high voltage power grid and current load detection device of the present invention has a SY3001 intelligent three-phase phase voltammeter 1, the voltammeter is embedded with Windows Mobile 5.0 operating system, is provided with a touch operation display screen 2, and thus constitutes Pocket computer, capable of touch operation and data calculation processing, friendly man-machine interface, convenient software upgrade, the SY3001 intelligent three-phase phase voltammeter 1 can be directly purchased in the market. In the SY3001 intelligent three-phase phase voltammeter 1, there are 3 voltage information input channels and 6 current signal input channels that are insulated from each other. The 6 current signal input channels are respectively connected with clamp current transformers 3, which can be respectively connected with the wiring of the relay protection secondary circuit 5, and can simultaneously detect the six phases of the secondary curre...
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The invention relates to an ultra-high voltage power grid and a current load detection device, which has a SY3001 intelligent three-phase phase voltammeter, and the voltammeter is provided with three voltage input channels and six current input channels, and one end of the current input channel is Connected with a clamp current transformer, the voltage and current signal processing module set in the voltammeter is equipped with a six-phase current signal receiving, processing and storage unit, and a current signal receiving, processing and storage unit, and a voltage and current display interface And and current display interface. The device can effectively solve the problem that the sum current cannot be checked in the on-site load detection, and can accurately measure, calculate, and display the active power and reactive power value of the sum current, and judge the six-phase current amplitude intuitively and clearly. , phase, and whether the amplitude and phase of the synthesized sum current are correct, shorten the on-site load detection time, improve work efficiency, and have the advantages of simple and reasonable structural design, convenient use, and reliable performance.
Description
technical field [0001] The invention belongs to the technical field of electric power system relay protection detection, in particular to an ultra-high voltage power grid and current load detection device. Background technique [0002] In the 500 kV and above ultra-high voltage power grid system, three-half of the main wiring mode is often used, and the relay protection is to protect the ultra-high voltage power grid equipment. Therefore, as a protection device, it should use two groups of Current, and these two sets of currents are connected in parallel in the actual secondary circuit wiring, and then connected to the protection device, thus forming the sum of the two currents, the so-called sum current. [0003] On-load inspection is a test method often used in the on-site work of power system relay protection professionals. It is mainly applicable to relay protection devices that are newly installed or have undergone major changes in equipment circuits. Before they are pu...
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IPC IPC(8): G01R19/00G01R25/00
Inventor 曲欣余晓东王超宋国涛李成彦曹锐井子恒
Owner NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER