Information Model of ARC Protection System Based on IEC 61850

2011 ◽  
Vol 383-390 ◽  
pp. 2540-2544
Author(s):  
Dong Jiang Li ◽  
Yi Zhang
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
International Standards ◽  
Protection System ◽  
Protection Device ◽  
Iec 61850 ◽  
Medium Voltage ◽  
Relationship Of ◽  
The Relationship

This paper analyzes operation problems of medium voltage switchgear cabinet in the electric power system. According to the international standards of IEC 61850, model the new arc protection device on the bus and analysize the relationship of abstract communication serivce inferface (ACSI) mapping to manufacturing message specification (MMS). Finally, MMS PDU formation and decoding are described specifically based on ASN.1 encoding rules.

scholarly journals Investigating Phase Over-Current (OC) Protection in Medium-Voltage networks

2019 ◽  
Vol 4 (6) ◽  
pp. 41-49 ◽  
Author(s):  
Aniagboso John Onah
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
Normal Operation ◽  
Electrical Network ◽  
Power Circuit ◽  
Medium Voltage ◽  
Protection Scheme ◽  
Overcurrent Protection ◽  
Overcurrent Relays

Overcurrent protection is protection against excessive currents or current beyond the acceptable current rating of equipment. It generally operates instantly. Short circuit is a type of overcurrent. Magnetic circuit breakers, fuses and overcurrent relays are commonly used to provide overcurrent protection. There is always a need to protect expensive power equipment. Protective relaying is a very important part of any electric power system that comes into play during trouble, fault or abnormal condition. The purpose is to isolate unhealthy part of electrical power system while the rest continue their normal operation. The entire electric power system from source to load centers is exposed and subject to natural hazards. The effects of these hazards are capable of interrupting normal operations of the system. Since these hazards cannot be prevented, precautions are taken to minimize or eliminate their effect on the system. The relay is a basic component of any protection scheme. The information (or signals) received from the power system actuates the relay, when necessary, to perform one or more switching actions. The signals are proportional to the magnitudes and phase angles of power system voltages and currents. When the relay receives these signals, it decides to close (or open) one or more sets of normally open (or closed) contacts, and consequently, the trip coil of a circuit breaker will be energized to open the power circuit. This paper investigates over-current relay protection scheme applied to medium-voltage electrical network. Methods of current and time grading have been applied in the coordination of the overcurrent relays in a radial network. Different time/current characteristics of relays such as the normal inverse (NI), very inverse (VI), and extreme inverse (EI) have been examined in order to obtain optimum discrimination.

Comprehensive Evaluation of Grid-Connected Distributed Generation Operation

2014 ◽  
Vol 1070-1072 ◽  
pp. 965-971
Author(s):  
Yu Wei ◽  
Yu Chen Chen ◽  
Zhi Qiang Yuan ◽  
Bo Liu
Keyword(s):  
Power System ◽  
Electric Power ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Electric Power System ◽  
Distributed Resources ◽  
Complete Evaluation ◽  
Distributed Generations ◽  
Hierarchy Process ◽  
The Relationship

More and more distributed generations are interconnected to distribution network. Its operation state should be evaluated comprehensively and effectively. This paper gives index of each level to judge interconnecting operation through comparing guides of interconnecting distributed resources with electric power system in different countries. A comprehensive and complete evaluation model based on Analytical Hierarchy Process (AHP) and Fuzzy Synthetically Evaluating Method is proposed. The index weights are set through analyzing the relationship between each index, while certainties and uncertainties are described by setting membership grade. Finally, a demonstration is given and reasonable analysis results are attained, thus the feasibility and efficiency of the model that might be conductive to the description of interconnecting distributed resources with electric power system are verified.

scholarly journals Analysis of The Failure Protection System 20 KV CBO T75B Substation Malibu Feeder PT PLN (Persero) UP3 Menteng

2021 ◽  
Vol 6 (2) ◽  
pp. 1422
Author(s):  
Doni Abdul Mukti ◽  
Budi Sudiarto
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Distribution ◽  
Distribution System ◽  
Short Circuit ◽  
Performance Testing ◽  
Electric Power System ◽  
Protection System ◽  
Electrical Power System ◽  
Power Distribution System

Protection is a safety in the electric power system installed in the electric power distribution system, power transformer, electric power transmission, and electric generator used to secure the power system electricity from electrical disturbances or overloads by separating the disturbed parts of the electric power system from the undisturbed electrical power system so that the undisturbed electrical system can continue to work. The protection system at the T75B substation has a work failure where when there is a short circuit on the consumer side, it causes the PMT (Power Breaker) for the Malibu Feeder at the Kebon Sirih Substation to trip while the CBO (Circuit Breaker Outgoing) cubicle at the T75B substation does not trip. This resulted in an unexpected widespread blackout. To find out the cause of the failure of the protection system, several tests and analyzes were carried out, namely protection design testing, protection relay coordination testing, protection system construction analysis, protection equipment performance testing. It is hoped that the test results can be used as a reference for improvement so that similar failures do not recur.

Expectation for Smart Inverter & DERMS for Electric Power System Task

2018 ◽  
Vol 138 (6) ◽  
pp. 412-415 ◽  
Author(s):  
Ryo Maeda ◽  
Takeshi Fukuoka ◽  
Yasutoshi Yoshioka ◽  
Atsushi Harada
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
System Task
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