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Fault indicator

About: Fault indicator is a research topic. Over the lifetime, 10057 publications have been published within this topic receiving 143482 citations. The topic is also known as: FCI & power line fault indicator.


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22 Sep 2006
TL;DR: In this paper, the authors present a comprehensive CIM structure for the design, construction, and operation of distribution systems, including a detailed discussion of the benefits of using extended control in the context of SCADA.
Abstract: POWER DELIVERY SYSTEM CONTROL AND AUTOMATION Introduction Why Distribution Automation Power Delivery Systems Control Hierarchy What Is Distribution Automation Distribution Automation System Basic Architectures and Implementation Strategies for DA Definitions of Automated Device Preparedness Summary CENTRAL CONTROL AND MANAGEMENT Introduction Power System Operation Operations Environment of Distribution Networks Evolution of Distribution Management Systems Basic Distribution Management System Functions Basic of a Real-Time Control System (SCADA) Outage Management Decision Support Tools Subsystems Extended Control-Feeder Automation Performance Measures and Response Times Data Base Structures and Interfaces Conclusions Appendix 2A: Sample Comprehensive CIM Structure DESIGN, CONSTRUCTION AND OPERATION OF DISTRIBUTION SYSTEMS, MV NETWORKS Introduction Design of Networks LV Distribution Networks Switchgear for Distribution Substations and LV Networks Extended Control of Distribution Substations and LV Networks Summary HARDWARE FOR DISTRIBUTION SYSTEMS Introduction to Switchgear Primary Switchgear Ground Mounted Network Substations Larger Distribution/Compact Substations Pole Mounted Enclosed Switches Pole Mounted Reclosers Pole Mounted Switch Disconnectors and Disconnectors Operating Mechanisms and Actuators Current and Voltage Measuring Devices Instrument Transformers in Extended Control Current and Voltage Sensors PROTECTION AND CONTROL Introduction Protection Using Relays Sensitive Earth Fault and Instantaneous Protection Schemes Protection Using Fuses Earth Fault and Overcurrent Protection for Solid/ Resistance Earthed Networks Earth Faults on Compensated Networks Earth Faults on Unearthed Networks An Earth Fault Relay for Compensated and Unearthed Networks Fault Passage Indication Connection of the FPI to the Distribution System Conductor Distribution System Earthing and Fault Passage Indication AutoReclosing and Fault Passage Indicators The Choice of Indication between Phase Fault and Earth Fault Resetting the Fault Passage Indicator Grading of Fault Passage Indicators Selecting a Fault Passage Indicator Intelligent Electronic Device (IED) Power Supplies for Extended Control Automation Ready Switchgear - FA Building Blocks Examples of Building Blocks Typical Inputs and Outputs for Building Blocks Control Building Blocks and Retrofit Control Logic PERFORMANCE OF DISTRIBUTION SYSTEM Faults on Distribution Networks Performance and Basic Reliability Calculations Calculating the Effects of Extended Control Improving the Reliability of Underground Networks Improving the Reliability of Overhead Networks Improving Performance with Automation Improvements by Combining Design Methods on Underground Circuits COMMUNICATION SYSTEMS FOR CONTROL AND AUTOMATION Introduction Communications and Distribution Automation DA Communication Physical Link Options Wireless Communication Wire Communications Distribution Automation Communications Protocols Distribution Automation Communications Architecture DA Communications User Interface Some Considerations for DA Communications Selection Requirements for Dimensioning the Communications Channel Glossary of Communication Terms Used CREATING THE BUSINESS CASE Introduction Potential Benefits Perceived by the Industry for Substation Automation Potential Benefits Perceived by the Industry for Feeder Automation Generic Benefits Benefits Opportunity Matrix Benefits Flow Chart Dependencies, Shared and Unshared Benefits Capital Deferral, Release, or Displacement Savings in Manpower Savings Related to Energy Other Operating Benefits Summary of DA Functions and Benefits Economic Value-Cost Presentation of Results and Conclusion CASE STUDIES Introduction Case Study 1, Long Rural Feeder Case Study 2, Large Urban Network Glossary Index

198 citations

Journal ArticleDOI
TL;DR: In this article, the traveling-wave principle along with two graph theory-based lemmas is deployed to locate the fault by sectionalizing the graph representation of the MTDC system.
Abstract: While in many applications, multiterminal dc (MTDC) systems are potentially appropriate substitutes for their ac counterparts, their protection problems still require more attention. This paper proposes a novel traveling-wave-based methodology for fault location in MTDC systems. The traveling-wave principle, along with two graph theory-based lemmas, is deployed to locate the fault by sectionalizing the graph representation of the MTDC system. Accordingly, the system of equations relating the fault inception time, fault point, and first arrival time at different converter locations would be derived and solved. The method merely needs the first surge arrival times, thereby eliminating the practical problems in relation to identifying subsequent traveling waves. More important, it successfully determines the fault location, regardless of the network topology complexity, that is, the number of its meshes and radial lines. To demonstrate the effectiveness of the method, it is applied to some complicated MTDC systems containing meshes and radial lines. Numerous simulation studies carried out for different conditions verify high accuracy, robustness against fault impedance, and noise immunity of the proposed method.

196 citations

Journal ArticleDOI
01 Oct 2016
TL;DR: In this article, an open-circuit fault detection method for a grid-connected neutral-point clamped (NPC) inverter system is presented, which identifies the location of the faulty switch and the faulty clamping diode of the NPC inverter without any additional hardware or complex calculations.
Abstract: This paper presents an open-circuit fault detection method for a grid-connected neutral-point clamped (NPC) inverter system. Further, a fault-tolerant control method under an open-circuit fault in clamping diodes is proposed. Under the grid-connected condition, it is impossible to identify the location of a faulty switch by the conventional methods which usually use the distortion of outputs because the distortion of the outputs is the same in some fault cases. The proposed fault detection method identifies the location of the faulty switch and the faulty clamping diode of the NPC inverter without any additional hardware or complex calculations. In the case of the clamping diode faults, the NPC inverter can transfer full rated power with sinusoidal currents by the proposed fault-tolerant control. The feasibility of the proposed fault detection and the fault-tolerant control methods for the grid-connected NPC inverter are verified by simulation and experimental results.

195 citations

Journal ArticleDOI
TL;DR: A linear feedback shift register can be used to compress a serial stream of test result data and it is possible for an erroneous bit stream and the correct one to result in the same signature.
Abstract: A linear feedback shift register can be used to compress a serial stream of test result data. The compressed erroneous bit stream caused by a fault is said to form the "signature" of the fault. Since the bit stream is compressed, however, it is possible for an erroneous bit stream and the correct one to result in the same signature.

194 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202381
2022215
202127
202061
2019116
2018160