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Distributed multifunctional integral measurement method for electric power system

A technology of power system and measurement method, applied in the field of power system, can solve the problems of on-site construction difficulty, increase the complexity of the secondary circuit, unsafe hidden dangers, etc., so as to reduce engineering construction difficulty and safety risks, reduce equipment maintenance, and reduce The effect of maintenance costs

Active Publication Date: 2009-06-03
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
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Problems solved by technology

[0003] The increase of secondary measurement equipment makes the CT / PT circuit shuttle between different application screen cabinets, which increases the complexity of the secondary circuit, increases the load intensity of CT / PT, and brings difficulties to equipment maintenance and on-site construction. , and at the same time bring about unsafe risks
The increase in monitoring equipment makes the auxiliary contacts of the switch tense, or even insufficient

Method used

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  • Distributed multifunctional integral measurement method for electric power system
  • Distributed multifunctional integral measurement method for electric power system

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Embodiment Construction

[0017] see figure 1 It is a structural schematic diagram of a distributed multifunctional integrated measurement method for secondary equipment in a power system according to the present invention. The CT / PT secondary circuit of a power plant or substation is connected to the analog input of the data acquisition unit of the multifunctional integrated measurement device. interface, the data acquisition unit converts the analog signal into a digital signal for storage through the signal conversion circuit and the A / D conversion circuit. Connect the switch auxiliary contact signal or other signals of the power plant or substation to the digital input interface of the data acquisition unit of the multifunctional integrated measuring device, and the data acquisition unit stores the digital signal into the data acquisition unit through photoelectric isolation.

[0018] The acquisition of analog and switch data is synchronized with a GPS receiver or other precise clock sources, and t...

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Abstract

In a distributed multifunctional integral measurement system of the invention, the embedded computer technology and the high-speed data bus communication technology are utilized, the improvement of the technical proposal for measuring secondary equipment of the traditional electric power system, and the concept of a distributed system of a data acquisition unit and an application layer equipment unit are proposed. The integration of all secondary equipment to a device is realized, and all application layer equipment (PMU, RTU, fault recorder and fault location, etc.) share the data of the data acquisition unit by a high-speed data bus.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a distributed multifunctional integrated measurement method for secondary equipment in the power system. Background technique [0002] As the power grid structure becomes more and more complex, the secondary equipment used for monitoring and control increases relatively. The requirements for monitoring the steady state, dynamic state and transient state of the power grid are also getting higher and higher. The monitoring equipment (defined as application) currently used in power grid operation includes: RTU, phasor detection device PUM, AVC / AQC device for automatic voltage regulation, stability device, fault recording, energy metering, fault location, electric energy Quality monitoring, small current grounding line selection, protection measurement and control unit. [0003] The increase of secondary measurement equipment makes the CT / PT circuit shuttle between different applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25G01R31/00
Inventor 熊敏张辉张金平汤飞郑国太董志猛张丽坤
Owner CHINA ELECTRIC POWER RES INST
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