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.

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.

AGC Control of Scheduling with Distributing Power Generation and Performance Study

2012 ◽  
Vol 220-223 ◽  
pp. 101-106
Author(s):  
Xing Wan ◽  
Xiao Li Zhang
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Low Voltage ◽  
Performance Study ◽  
Power Distribution System ◽  
Power Resources ◽  
Distributed Generators ◽  
Load Demand ◽  
Micro Grid ◽  
And Performance

Abstract: Scheduling plans of running a large, traditional power grid often distribute power resources in each small system. And they didn’t take the scope of scheduling operation within the power distribution system into consideration. With the trend separate transmission and distribution, the number of distributed generators that installed is growing rapidly. More and more micro-grid network composed of low-voltage distribution power network are formed. With effective regulation, this system can satisfy local load demand and support networking. The establishment of mechanisms such as AGC support services, with be vital to insure the power quality and reliability. Keywords: distributing power Micro-Grid DG AGC

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.

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