Low-frequency oscillation monitoring system of electrical network

A low-frequency oscillation, power network technology, applied in information technology support systems, electrical components, circuit devices, etc., can solve the problem that offline analysis is difficult to adapt to changes in system operation

Inactive Publication Date: 2011-01-12
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

The off-line analysis of low-frequency oscillation is difficu

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  • Low-frequency oscillation monitoring system of electrical network
  • Low-frequency oscillation monitoring system of electrical network
  • Low-frequency oscillation monitoring system of electrical network

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[0034] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, detailed descriptions of known functions and designs may obscure the subject matter of the present invention, and such descriptions will be omitted here.

[0035] The power network low-frequency oscillation monitoring system of the present invention is based on the software function module on the existing WAMS system, and has the function of expanding the advanced application of the WAMS system. The software function module of the present invention is one of the components of the WAMS system, installed on the main station of the WAMS system, and can make full use of the communication network of the WAMS main station to receive the data of the whole network for analysis. According to the three characteristics of PMU: ①provide synchronous real-time phase angle information; ②transmit data to the master station of WAM...

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Abstract

The invention relates to a low-frequency oscillation monitoring technology of a large-scale electrical network on the basis of a wide area measurement system (WAMS). The invention combines the advantages of various real-time analysis algorithms in allusion to the limitation that the low-frequency oscillation monitoring system in prior art only can perform offline analysis, so as to disclose an online low-frequency oscillation monitoring system of an electrical network to realize the online monitoring and analysis of the low-frequency oscillation of the electrical network. The low-frequency oscillation monitoring system of the electrical network of the invention is a software function module based on a traditional WAMS system, and comprises a system management module, a data communication module, a real-time monitoring module, a data analysis module and a database module. The invention realizes the real-time recording, real-time displaying and stable analysis functions of the low-frequency oscillation data in the electrical network, and is mainly used for the monitoring and analysis of the large-scale electrical network.

Description

technical field [0001] The invention relates to power network measurement and control technology, in particular to a large-scale power network low-frequency oscillation monitoring technology based on a wide area measurement system (WAMS) platform. Background technique [0002] The low-frequency oscillation problem caused by the interconnection between power networks seriously threatens the safe and stable operation of the interconnected power network and greatly restricts the transmission capacity of the power grid. With the gradual expansion of the scale of the power network (referred to as the power grid), it is necessary to obtain wide-area synchronization information to analyze and control the oscillation characteristics of the power grid. Therefore, real-time monitoring and analysis of low-frequency oscillations in power networks is particularly important. The rapid development and wide application of Wide Area Measurement System (WAMS) provides a platform for online m...

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Application Information

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IPC IPC(8): H02J13/00
CPCY04S10/40
Inventor 刘群英胡凤凯甄威黄琦易建波井实张昌华陈勇
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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