Could the new high interrupting capacity circuit breaker change your distribution system?

2003 ◽  
Author(s):  
J.A. Rooks ◽  
N.E. Rowe
Keyword(s):  
Distribution System ◽  
Circuit Breaker

scholarly journals Active Reduction of Short-Circuit Current in Power Distribution Systems

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 334
Author(s):  
Esteban Pulido ◽  
Luis Morán ◽  
Felipe Villarroel ◽  
José Silva
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Short Circuit ◽  
Circuit Breaker ◽  
Short Circuit Current ◽  
Power Converter ◽  
Power Distribution Systems ◽  
Power Distribution System ◽  
In Series

In this paper, a new concept of short-circuit current (SCC) reduction for power distribution systems is presented and analyzed. Conventional fault current limiters (FCLs) are connected in series with a circuit breaker (CB) that is required to limit the short-circuit current. Instead, the proposed scheme consisted of the parallel connection of a current-controlled power converter to the same bus intended to reduce the amplitude of the short-circuit current. This power converter was controlled to absorb a percentage of the short-circuit current from the bus to reduce the amplitude of the short-circuit current. The proposed active short-circuit current reduction scheme was implemented with a cascaded H-bridge power converter and tested by simulation in a 13.2 kV industrial power distribution system for three-phase faults, showing the effectiveness of the short-circuit current attenuation in reducing the maximum current requirement in all circuit breakers connected to the same bus. The paper also presents the design characteristics of the power converter and its associated control scheme.

scholarly journals Design and Testing of a Low Voltage Solid-State Circuit Breaker for a DC Distribution System

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 338
Author(s):  
Leslie Tracy ◽  
Praveen Kumar Sekhar
Keyword(s):  
Solid State ◽  
Power Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Low Voltage ◽  
Circuit Breaker ◽  
Solid State Circuit ◽  
Dc Distribution ◽  
High Side ◽  
Solid State Circuit Breaker

In this study, a low voltage solid-state circuit breaker (SSCB) was implemented for a DC distribution system using commercially available components. The design process of the high-side static switch was enabled through a voltage bias. Detailed functional testing of the current sensor, high-side switch, thermal ratings, analog to digital conversion (ADC) techniques, and response times of the SSCB was evaluated. The designed SSCB was capable of low-end lighting protection applications and tested at 50 V. A 15 A continuous current rating was obtained, and the minimum response time of the SSCB was nearly 290 times faster than that of conventional AC protection methods. The SSCB was implemented to fill the gap where traditional AC protection schemes have failed. DC distribution systems are capable of extreme faults that can destroy sensitive power electronic equipment. However, continued research and development of the SSCB is helping to revolutionize the power industry and change the current power distribution methods to better utilize clean renewable energy systems.

scholarly journals Application of Zone Selective Interlocking in Electrical Power Distribution System

2019 ◽  
Vol 9 (2) ◽  
pp. 2294-2299
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Electrical Power ◽  
Circuit Breaker ◽  
Power Outages ◽  
Power Distribution System ◽  
Electrical Distribution ◽  
Potential Damage

The two major concerns in today’s electrical distribution system are the potential damage from fault stress and the costs associated with power outages. The optimal way to limit fault stress is to clear the fault in the shortest amount of time. Unfortunately, clearing the fault within the shortest amount of time might sacrifice coordination and lead to broader power outages. Zone Selective Interlocking Coordination assures the possible sustaining of faults for over currents and voltages with different faults. The circuit breaker operation and principle depend upon the open and close operation for the continuity of supply/service. To reduce the stress on the system, generated energy during fault conditions to be considered and its coordination to be checked

scholarly journals Expansion Planning in Distribution Network with DSTATCOM using Distance Oriented Grasshopper Optimization Algorithm An Optimal Model

2022 ◽  
Vol 13 (1) ◽  
pp. 0-0
Keyword(s):  
Optimization Algorithm ◽  
Power Distribution ◽  
Distribution System ◽  
Circuit Breaker ◽  
Power Distribution System ◽  
Expansion Planning ◽  
Grasshopper Optimization Algorithm ◽  
Loss Index ◽  
Grasshopper Optimization ◽  
Static Compensator

This paper intends to consider a multi-objective problem for expansion planning in Power Distribution System (PDS) by focusing on (i) expansion strategy (ii) allocation of Circuit Breaker (CB), (iii) allocation of Distribution Static Compensator (DSTATCOM), (iv) Contingency Load Loss Index (CLLI), and power loss. Accordingly, the encoding parameters decide for expansion, Circuit Breaker (CB) placement, DSTATCOM placement, load of real and reactive powers of expanded bus or node are optimized using Grasshopper Optimization Algorithm (GOA) based on its distance and hence, the proposed algorithm is termed as Distance Oriented Grasshopper Optimization Algorithm (DGOA). The proposed expansion planning model is carried out in IEEE 33 test bus system. Moreover, the adopted scheme is compared with conventional algorithms and the optimal results are obtained.

scholarly journals Design and Monitoring of 1kva Distribution Transformer

2019 ◽  
Vol 9 (2) ◽  
pp. 3445-3448
Keyword(s):  
Monitoring System ◽  
Distribution System ◽  
Phase 1 ◽  
Circuit Breaker ◽  
Text Message ◽  
Cloud Services ◽  
Critical Parameters ◽  
Secondary Circuit ◽  
Distribution Transformer ◽  
Current Frequency

Transformers are vital part of transmission and distribution system. Generally, the lifetime of the transformer varies from 40 to 50 years. Regular monitoring and maintenance must be done to increase its lifetime. The existing monitoring system can acquire, process, analyse and communicate the critical parameters viz. voltage, current, frequency, temperature, oil level, etc. and sends the values to a central hub and indicates the fault to the concerned person. These parameters are required by the operators to ensure reliable power delivery and to assist the day-to-day decision-making activities. A single phase, 1 KVA, 50 Hz, 230/115 V, oil-immersed distribution transformer is designed, and the above-mentioned parameters are monitored and displayed in mobile phones/personal computers. The values from the monitoring system is displayed in website or mobile application using cloud services. With the data available, various processes can be performed to obtain information. The proposed system can be installed in any available transformers with little modification in sensors. When a severe fault occurs secondary circuit-breaker is tripped thereby isolating the transformer and an official is alerted using a text message.

Study on interrupting test method for class S2 circuit breaker of distribution system

2011 ◽  
Vol 25 (8) ◽  
pp. 132-139
Author(s):  
Byung-Rak Park ◽  
Man-Yong Jo ◽  
Jin-Seok Kim ◽  
Hee-Sang Shin ◽  
Jae-Chul Kim
Keyword(s):  
Distribution System ◽  
Circuit Breaker ◽  
Test Method

scholarly journals Sistem Kendali On/Off Circuit Breaker 150 kV AD20 Tipe 8DN2 di PT. Krakatau Daya Listrik

2020 ◽  
Vol 12 (1) ◽  
pp. 65-73
Author(s):  
Endi - Permata ◽  
Dimas Aditama
Keyword(s):  
Control System ◽  
Remote Control ◽  
Electric Power ◽  
Operating Systems ◽  
Distribution System ◽  
Circuit Breaker ◽  
Process Control System ◽  
Work Processes ◽  
Advantages And Disadvantages ◽  
Transmission And Distribution

In the transmission and distribution system at PT. Krakatau Daya Listrik there is a security system created. In this case Circuit Breaker (CB), which is a security installation of the electricity network. CB that is used is GIS (Gas Insulated Switchgear) type where CB uses SF6 gas (Sulfurhexaflouride) as an insulating medium to extinguish the arc. This research itself aims to understand how the 150 kV GIS AD20 On / Off Circuit Breaker process control system at PT. Krakatau Daya Listrik and how the work processes, instrumentation, advantages and disadvantages and maintenance of the 150 kV GIS AD20 Circuit Breaker at PT. Krakatau Electric Power. Using research methods directly in the field with interviews and analysis. The results of this study are in the form of an understanding of CB operating systems that can be turned on both locally and via remote control and also the results of routine CB maintenance as an indication of the appropriateness of the equipment for operation so that from the associated analysis can be known the strengths and weaknesses of the device, especially the circuit breaker type GIS.

scholarly journals Development of Wireless Heat Variation Detection System between MCCBs and MCs within an MCC

2021 ◽  
Vol 35 (4) ◽  
pp. 42-51
Author(s):  
Yeong-Mo Yeon ◽  
Seung-Hee Kim
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Detection System ◽  
Circuit Breaker ◽  
Measured Temperature ◽  
Control Center ◽  
Power Distribution System ◽  
Temperature Controller ◽  
Communication Technique ◽  
And Performance

In this study, we developed a wireless heat variation detection system that can measure the temperature difference between the molded case circuit breaker (MCCB) and magnetic contactor (MC) of the motor control center (MCC), collect data, and monitor the heat variation of the MCC connection. Thus far, we have developed a temperature controller and applied a multi-communication technique based on Bluetooth Low Energy between the repeater and temperature controller between the MCCB and MC. Furthermore, we designed the measured temperature data to be transmitted to the cloud server via a gateway. To verify the functionality and performance of the developed wireless heat variation detection system, we initially installed 1 gateway for communication with the MCC server, 4 sets of 4 types of temperature controllers in Repeater 1, 12 sets of 4 types of temperature controllers in Repeater 2, and 6 sets of 4 types of temperature controllers in Repeater 3. Then, we conducted an experiment to periodically monitor the temperature at 12 locations of the MCCB and MC terminal connections in real-time. This developed device can be applied not only to the MCC but also to the power distribution system using the MCCB and MC. This will contribute to the prevention and management of electrical fire accidents caused by heat variation that can occur because of poor contact, overcurrent, and abnormal current.

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