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Synchronous-phasor and electric-energy-quality integrated monitoring system and method of power distribution network

A technology of power quality monitoring and synchronized phasors, applied in the direction of measuring electrical variables, system integration technology, information technology support systems, etc., to achieve the effect of expanding storage space, small size, and improving data calculation efficiency

Inactive Publication Date: 2016-12-14
SHANDONG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the above problems, and propose a distribution network synchronized phasor and power quality integrated monitoring system and method, which can not only monitor the dynamic behavior of the low-voltage side power system in real time, but also analyze harmonics Pollution and other power quality issues, cooperate with the high-voltage main grid side to provide more detailed and panoramic steady-state and dynamic behavior monitoring for grid operation

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  • Synchronous-phasor and electric-energy-quality integrated monitoring system and method of power distribution network

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Embodiment Construction

[0051] The present invention is described in detail below in conjunction with accompanying drawing:

[0052] An integrated monitoring system for synchronous phasor and power quality on the distribution network side, such as figure 1 As shown, including: synchrophasor and power quality monitoring integrated machine and master station server; synchrophasor and power quality monitoring integrated machine communicates with the master station server;

[0053] Synchronized phasor and power quality monitoring integrated machine is the measurement terminal of the system, which is a simplification of the conventional synchronized phasor measurement device PMU and power quality monitoring device. Power, reactive power, etc.), monitoring of switching quantities, only synchronous measurement of main electrical quantities in the terminal grid, including voltage phasor (amplitude, phase angle), current phasor (amplitude, phase angle) and frequency; In terms of power quality monitoring, it ...

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Abstract

The invention discloses a synchronous-phasor and electric-energy-quality integrated monitoring system and method of a power distribution network. The synchronous-phasor and electric-energy-quality integrated monitoring system comprises a synchronous-phasor and electric-energy-quality monitoring integrated machine and a master station server, and the synchronous-phasor and electric-energy-quality monitoring integrated machine is in communication with the master station server; the synchronous-phasor and electric-energy-quality monitoring integrated machine is used for carrying out synchronous measurement on main electrical variables including the voltage phasor, the current phasor and the frequency in a terminal power grid, and meanwhile completes monitoring and analysis of power grid harmonic waves and three-phase unbalance variables. The synchronous-phasor and electric-energy-quality integrated monitoring system and method have the advantages that dynamic power-grid behaviors and electric energy quality information on the low-voltage side of a power distribution network can be monitored in real time, the functions of a synchronous-phasor measuring device and the functions of an electric-energy monitoring device are integrated, the size is small, and convenience is brought to installation. More compacter and panorama stable and dynamic behavior monitoring is provided for power grid running in cooperation with a conventional synchronous phasor measuring device and an electric energy quality monitoring device of a high-voltage power grid.

Description

technical field [0001] The invention relates to the technical field of power system data measurement and analysis, in particular to an integrated monitoring system and method for synchronous phasor and power quality of a distribution network. Background technique [0002] Conventional synchrophasor measurement units (PMUs) and power quality monitoring devices are generally installed in high-voltage substations and main power plants to monitor the dynamic behavior and power quality problems of the high-voltage main network, respectively. For a dedicated power quality monitoring system or wide-area measurement system, it includes a large number of measurement devices, sub-station analysis systems, master station analysis systems, application servers and databases, network equipment and other software and hardware systems, which usually need to be built separately. Investment and operation and maintenance costs are relatively large. [0003] In recent years, great changes have...

Claims

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Application Information

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IPC IPC(8): G01R19/25G01R31/00
CPCG01R19/25G01R31/00Y02E40/70Y02E60/00Y04S10/00Y04S10/22
Inventor 张恒旭王磊
Owner SHANDONG UNIV
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