Study on the role of transmission lines in network strengthening and influencing the power system inter-area modal characteristics

2021 ◽  
Vol 17 (4) ◽  
pp. 323
Author(s):  
Sirin Dutta Chowdhury
2020 ◽  
Vol 1 (3) ◽  
pp. 5-13
Author(s):  
Vladimir V. Avdanin

Basing on the principles of historicism and objective analysis the article examines the features and problems of implementing two state electrification plans: GOELRO plan adopted 100 years ago, under which the construction of local power plants in the Middle Volga region began, and the General Plan for the USSR Electrification, approved in 1932, which laid down the main solutions to radically redevelop the industry and agriculture of the region on the basis of using the sources of hydroelectric power, constructed on the Volga. In this regard, the historical and comparative method made it possible to highlight the main stages in creation and development of the power system of the Chuvash Republic, which since the mid 1950s has acted as a central a link in the country’s unified electric power system. The idea of creating energy hubs of the Volga Cascade, which in the years that followed provided the rise of industrial and agricultural production of the region, was based on the need for the priority development of the integrated power grid taking into account a strictly defined sequence of regional power plant construction, however, these aspects of implementing the electrification plans are not exampled in the domestic historical literature devoted to the reform of the energy industry. The article notes the pivotal role of scientific and technical cooperation between Leningrad and Cheboksary power engineers and instrument makers in solving the most complicated tasks in times of peace and during the war, it considers the contribution of Chuvash power engineers, who provided the construction and modernization of dozens of trunk transmission lines, which made it possible to fully implement the country’s electrification plan and to ensure energy security of the region.


2020 ◽  
Vol 2 (1) ◽  
pp. 17-21
Author(s):  
Monica M ◽  
Sivakumar P ◽  
Sivani S ◽  
Sandhiya D ◽  
Shameem Fathima J ◽  
...  

In the modern era transmission line is the most important part of the power system. Its allegiance and requirement of power is grown up exponentially. The major role of transmission lines is to transmit electric power from the source area to distribution network. Transmission line protection is an important issue in power system because 85-87% of power system faults are occurring in transmission line. Energy leakage is one of the major problems that corporates faces in recent times. Only way to solve this problem is to come up with a mechanism that can detect the fault in transmission line automatically and intimate the authorities with a specific location. In this work the device uses the sensor to sense the voltage flow in the transmission line and detect if there is a variation in the voltage flow. If fault is detected, it can be automatically controlled by using relay and the system is also integrated with IoT mechanism, to intimate the responsible person with location information.


2012 ◽  
Vol 433-440 ◽  
pp. 5542-5548
Author(s):  
Bin Li ◽  
Tao Luo ◽  
Zhi Qian Bo

T-Type transmission lines are widely used in HV power system. The paper analyzes operation characteristics of fault component based traditional differential protection principles in the complex plane. The paper pointed out that there are some limitations for traditional principles in ensuring sensitivity of internal fault and reliability of external fault. Furthermore, the paper proposes a novel principle for T-type transmission line. Current phase differential phase is introduced into realization of current differential protection. Restraint unit of the proposed principle takes the role of drive and restraint respectively in the case of internal and external faults. Therefore, both the sensitivity and reliability of protection are improved significantly. At last, simulation tests show that the proposed principle is valid.


2013 ◽  
Vol 347-350 ◽  
pp. 1467-1472
Author(s):  
Wen Wei Huang ◽  
Gang Yao ◽  
Xiao Yan Qiu ◽  
Nian Liu ◽  
Guang Tang Chen

Optimization of restoration paths of power system after blackout is a multi-stage, multi-target, multi-variable combinatorial problem in the power system restoration. This paper presents a reasonable model and effectually method. The proposed model is considered as a typical partial minimum spanning tree problem from the mathematical point of view which considering all kinds of constraints. Improved data envelopment analysis (DEA) was used to get the weight which considering line charging reactive power, weather conditions, operation time and betweenness of transmission lines. The improved genetic algorithm method is employed to solve this problem. Finally, an example is given which proves the strategy of the line restoration can effectively handle the uncertainty of the system recovery process, to guarantee the system successfully restored after the catastrophic accidents.


The power demand is increasing globally at a higher rate than the possible increase in the generation. The increased demand requierements put additional burdon on the existing transmission lines and sometimes burdoned beyond their power carrying capacities. Increase in power demand either due modernization of power system, industrialization leads to congestion problem and abruptly affects the stable and reliable operation of power system. Redesign and reconstruction of power system according to load requirements everytime is not an economical and viable solution. Other possible solution to the problem is use of FACTS devices. The use of FACTS devices the problems like increase in load demand, high losses in transmission line and dip in receiving end voltage can be eliminated or easily tackeled. In this paper, Static Synchronous Series Compensator as one of FACTS device has been used for improvement of voltage profile of different buses and power carrying capacity of the transmission lines. The main objective of this paper is to make a comparative investigation between compensated and uncompensated power system in terms of enhancement of power carrying capacity with low losses and improvement of voltage profiles of buses in the transmission network. The performance of uncompensated power system has been compared with compensated power system with the use of MATLAB/ Simulink software.


Sign in / Sign up

Export Citation Format

Share Document