Reliability modeling and quantitative evaluation method for FTU in distribution network automation

A technology for automation and quantitative evaluation of distribution network, applied in circuit devices, electrical components, etc.

Inactive Publication Date: 2013-09-11
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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Problems solved by technology

However, there are few studies on the reliability modeling ...

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  • Reliability modeling and quantitative evaluation method for FTU in distribution network automation
  • Reliability modeling and quantitative evaluation method for FTU in distribution network automation
  • Reliability modeling and quantitative evaluation method for FTU in distribution network automation

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Embodiment Construction

[0028] A reliability modeling and quantitative evaluation method for FTU in distribution network automation, including the following aspects:

[0029] 1. The hardware structure of FTU (feeder terminal unit) is mainly composed of four parts: central control unit, operation control loop, communication terminal, charger and battery.

[0030] The input / output equipment of FTU generally includes 9 channels of analog (3 channels of voltage and 6 channels of current), 12 channels of remote signal input and 8 channels of remote control output. When it is used as a switch on the column, it can monitor one switch; when it is used in the ring network cabinet, it can monitor two incoming line switches.

[0031] The central control unit is the core of the FTU, which completes tasks such as data collection, remote control command execution, and communication processing. FTU adopts AC sampling technology, uses digital signal processing chip DSP, calculates various electrical quantities acco...

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Abstract

The invention provides a reliability modeling and quantitative evaluation method for an FTU in distribution network automation. The reliability modeling and quantitative evaluation method for the FTU in distribution network automation includes the following steps: S1, inputting the reliability parameters of all components, S2, analyzing the influence on the FTU after the components break down, S3, establishing a fault tree of the FTU, S4, analyzing the fault tree, deducing the calculation formula of a top event FTU fault, and calculating the reliability parameters of the FTU according to the reliability parameters of all the components, and S5, outputting the calculation result. The command execution and data acquisition in distribution network automation are both accomplished by the FTU (a switch monitoring device which is mounted beside a feeder line switch), and therefore the reliability of the FTU is of great importance. The reliability modeling and quantitative evaluation method for the FTU is achieved through the study of the reliability of the FTU.

Description

technical field [0001] The invention relates to a reliability evaluation method of a distribution network, in particular to a reliability modeling and quantitative evaluation method of an FTU in distribution network automation. It belongs to the technical field of electric power engineering. [0002] Background technique [0003] The distribution network is an important link in the power system that directly supplies power to users, and has the most direct impact on the quality and reliability of power supply for users. my country's existing distribution network structure is relatively weak, the power supply capacity is weak, and users' requirements for power supply quality are constantly improving. Therefore, it is urgent to improve the degree of distribution network automation to ensure the reliability of power supply and the economy of operation. [0004] The execution of all commands and data collection of distribution automation are completed by FTU (switch monitoring...

Claims

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Application Information

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IPC IPC(8): H02J13/00
Inventor 万凌云谢开贵徐瑞林孙若笛陈涛胡博吕志盛
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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