Unlock instant, AI-driven research and patent intelligence for your innovation.

Real time, automatic diagnostic system and method for electric networks

An automatic diagnosis and power grid technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as difficult tasks and ineffective use, and achieve the effect of promoting construction and reducing the need for updates

Inactive Publication Date: 2016-03-02
COMPANY HIDRO ELECTRICA DO SAO FRANCISCO - CHESF
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a library of 10,000 rules, this task becomes quite difficult, making it practically impossible to use such techniques effectively

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Real time, automatic diagnostic system and method for electric networks
  • Real time, automatic diagnostic system and method for electric networks
  • Real time, automatic diagnostic system and method for electric networks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0433] Example 1 - Tripping a Transmission Line by Voltage Overload

[0434] The scheme consists of tripping the transmission line through a voltage overload. Line 04S9 interconnecting the LR device and the P device will be used to illustrate this scheme. Figure 18 and Figure 19 Two terminals of the transmission line are presented.

[0435] marked events

[0436] ·14S9-PENABER

[0437] ·14S9-RLDABER

[0438] ·04S9-PENSTTT

[0439] ·04S9-RLDSTTT

[0440] after update event

[0441] ·14S9-PENABER

[0442] ·14S9-RLDABER

[0443] · 04S9-PENSTTT (protection category is the event of overvoltage)

[0444] · 04S9-RLDSTTT (protection category is the event of overvoltage)

[0445] After updating connectivity status

[0446] · 04S9-PEN is not connected to a powered device

[0447] 04S9-RLD is not connected to a powered device

[0448] Alert generated:

[0449] Presence and activation of devices that will positively evaluate the topology that will be evaluated:

[0450...

Embodiment 2

[0463] Example 2 - Failure of a circuit breaker in a 230kV installation

[0464] program by Figure 20 Composed of a fault in a circuit breaker in the 230kV installation shown. Circuit breaker 14M1 in the installation at R will be used to illustrate this fault. As a result of this fault, all circuit breakers associated with the 230kV bus bars of the installation will open, creating a blackout in the installation.

[0465] Flagged events:

[0466] ·14M1-RIBFLDI

[0467] ·04M1-RIBATPR

[0468] ·04M1-RCDATPR

[0469] 04M1-RCDATRB

[0470] ·14M1-RCDABER

[0471] ·14M1-RCDFECH

[0472] ·14M1-RCDABER

[0473] ·14S1-RIBABER

[0474] ·14T2-RIBABER

[0475]·14T3-RIBABER

[0476] ·14T4-RIBABER

[0477] After updating said event:

[0478] · 14M1-RIB circuit breaker failure

[0479] Actuation of 04M1-RIB protection (protection class: )

[0480] Actuation of 04M1-RCD protection (protection class: )

[0481] After updating connectivity status

[0482] ·04M1-RCD power...

Embodiment 3

[0564] Embodiment 3-Scheme in power grid

[0565] plan 1

[0566]In the first step (topology / flow relationship), it is possible to recognize that the alarm lines from 1 to 7 depend on the transformer of alarm 8 and the transformer of alarm 9, and that the lines are equal to each other with respect to flow, and that the The same goes for transformers. For this scheme, the diagram representing the energy flow between elements is Figure 7 .

[0567] Assuming the filter stage needs to divide alarms by diagnostics and by type of element, the resulting plots are the same, this is because 8 and 9 have the same diagnostics and both are transformers, the same way 1, 2, 3, 4, 5, 6 and 7 give the same diagnosis and they are all lines.

[0568] To verify the relationships in the graph, the following propagation rules are used:

[0569] · For relationship Transformer→Line:

[0570] o If transformer = 'tripped by actuation of phase overcurrent protection', then line = 'de-energiz...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a system and method for diagnosing automatically and in real time faults of local equipment in electric networks, such as electric energy generation and transmission networks. The system and method according to the invention include the use of generic rules that consist in the correlation of events and are applied, in particular, to electric networks with constant topology changes.

Description

technical field [0001] The present invention relates to the field of electrical engineering. More specifically, the present invention provides a system and method for performing real-time automatic diagnosis of faults in equipment located in an electrical grid, such as, for example, a power transmission grid and a power generation grid. The systems and methods of the present invention include the use of "universal rules" that coordinate a large number of diagnostic points with the capabilities of the system in order to provide event correlation analysis, with particular application to grids with frequent topology modifications. Background technique [0002] Regulatory and control centers for modern power distribution and transmission have the complex task of managing large and geographically integrated grids. Such centers capture large amounts of data over the grid, enabling diagnosis and localization of anomalies in the system. In modern control centers there are systems ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/46
CPCH04B3/46G01R31/003G01R31/088
Inventor M·D·S·C·D·梅洛M·C·桑帕约A·N·杜阿尔特E·R·内图J·P·萨维J·C·A·D·菲格雷多P·S·尼克莱蒂S·S·佩雷斯W·D·C·C·菲略A·S·D·阿罗约
Owner COMPANY HIDRO ELECTRICA DO SAO FRANCISCO - CHESF