scholarly journals Analysis of dynamic behavior of the back-to-back High Voltage Direct Current link model as part of electrical power system

2017 ◽  
Vol 141 ◽  
pp. 01046
Author(s):  
Vladimir Rudnik ◽  
Nikita Desyukov ◽  
Ruslan Ufa
Keyword(s):  
Power System ◽  
Dynamic Behavior ◽  
High Voltage ◽  
Direct Current ◽  
Electrical Power ◽  
Electrical Power System ◽  
High Voltage Direct Current ◽  
Link Model

scholarly journals An Overview of HVDC Technology

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4342
Author(s):  
Neville R. Watson ◽  
Jeremy D. Watson
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
Electrical Power ◽  
Low Carbon ◽  
Electrical Power System ◽  
Comprehensive Overview ◽  
High Voltage Direct Current ◽  
The Many ◽  
Ac Transmission ◽  
Important Objective

There is a growing use of High Voltage Direct Current (HVDC) globally due to the many advantages of Direct Current (DC) transmission systems over Alternating Current (AC) transmission, including enabling transmission over long distances, higher transmission capacity and efficiency. Moreover, HVDC systems can be a great enabler in the transition to a low carbon electrical power system which is an important objective in today’s society. The objectives of the paper are to give a comprehensive overview of HVDC technology, its development, and present status, and to discuss its salient features, limitations and applications.

scholarly journals Calculating the Interface Flow Limits for the Expanded Use of High-Voltage Direct Current in Power Systems

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2863
Author(s):  
Sangwook Han
Keyword(s):  
Power System ◽  
High Voltage ◽  
Direct Current ◽  
Limit Analysis ◽  
Large Scale ◽  
Power Transmission ◽  
Metropolitan Areas ◽  
High Voltage Direct Current ◽  
Flow Limit ◽  
Current Lines

Although loads are increasingly becoming concentrated in metropolitan areas, power generation has decreased in metropolitan areas and increased in nonmetropolitan areas; hence, power transmission must occur through interface lines. To achieve this, additional transmission lines must be secured because the existing interface lines have reached their large-scale power transmission limits. The Korea Electric Power Corporation has installed many high-voltage direct current lines, thereby impacting the determination of interface power flow limits. These serve as the basis for system operations. However, knowledge of operating high-voltage direct current lines as a simple transmission line in a single power system is lacking. The effects of high-voltage direct current and its related parameters for interface flow limit analysis remain unclear. Furthermore, whether high-voltage direct current should be included in the selection of the interface lines that serve as the basis for interface flow remains unclear. In addition, whether the high-voltage direct current line faults should be included in the contingency list for determining the interface flow limits has not been considered. Additionally, it has not been determined whether to operate the DC tap when performing the simulation This study addresses these issues and determines the conditions that are necessary for determining the interface flow limits when a high-voltage direct current transmission facility has been installed in a land power system. The results conclude how to reflect the above conditions reasonably when performing the interface flow limit analysis on a system that includes the HVDC lines.

A Modular Subsea Direct-Current Electrical-Power System

2014 ◽  
Vol 3 (06) ◽  
pp. 064-079 ◽  
Author(s):  
Rixin Lai ◽  
Di Zhang ◽  
Dong Dong ◽  
Song Chi ◽  
Maja Harfman Todorovic ◽  
...  
Keyword(s):  
Power System ◽  
Direct Current ◽  
Electrical Power ◽  
Electrical Power System

Research of Lightning Over-Voltage and Simulation Program of Substation Based on EMTP

2013 ◽  
Vol 441 ◽  
pp. 318-323
Author(s):  
Wei Chen ◽  
Shao Ping Zhou ◽  
He Chen ◽  
Xiao Long Luo ◽  
You Ping Fan
Keyword(s):  
Power System ◽  
High Voltage ◽  
Electrical Power ◽  
Simulation Program ◽  
Lightning Strike ◽  
Electrical Power System ◽  
Voltage Level ◽  
Data Format ◽  
Grounding Resistance ◽  
System Operating

High voltage substation is the junction station of electrical power system. In order to conduct lightning over-voltage simulation and analysation of couple of substations rapidly and intuitively, a serialization supposed simulation program of substation is developed based on the research of EMTP kernel and data format. Model of impulse grounding resistance and improved leader progression is included in the program, which enhance the accuracy as much as possible and satisfying the demand for emulation of different type and voltage level. Through the simulation of some 500kV high voltage substation, the influence to lightning over-voltage of different system operating plan and lightning strike spots is analyzed, which verifies the validity and convenience of the program.

scholarly journals A REVIEW OF STUDY AND ANALYSIS OF PARTIAL DISCHARGE FOR DIFFERENT INSULATION MATERIALS WITH CAPACITANCE VALUE

2021 ◽  
Vol 7 (12) ◽  
pp. 64-66
Author(s):  
Neetu Baghelkar ◽  
Abhishek Dubey
Keyword(s):  
Power Systems ◽  
Power System ◽  
High Voltage ◽  
Electrical Power ◽  
Electrical Equipment ◽  
Electrical Power System ◽  
Insulation Materials ◽  
System A ◽  
Solid Liquid

In the high voltage (HV) electrical power system, a variety of solid, liquid and gaseous materials are used for insulation purposes to protect incipient faults within the HV power equipment. Among these, solid insulation is widely used for high voltage equipment in high voltage power systems. Most insulation materials are not perfect in all respects and always contain some impurities. In high voltage (HV) electrical equipment, the quality of the insulation plays a very important role. Continued growth in the power system has provided the opportunity to protect equipment for healthy operation throughout its useful life.

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