Enhancing security of distance relays during power swing unblocking function for double circuit transmission lines: A differential power approach

2016 ◽  
Author(s):  
P.N. Gawande ◽  
S.S. Dambhare
Keyword(s):  
Transmission Lines ◽  
Power Swing ◽  
Distance Relays

An adaptive cumulative sum based method for unblocking distance relays in TCSC compensated transmission lines

2021 ◽  
Vol 131 ◽  
pp. 107095
Author(s):  
Behzad Asle Mohammad Alizadeh ◽  
Masoud Esmaeili Tayeb ◽  
Reza Razzaghi ◽  
Behnam Mohammadi-Ivatloo
Keyword(s):  
Transmission Lines ◽  
Cumulative Sum ◽  
Distance Relays

scholarly journals PMU based adaptive zone settings of distance relays for protection of multi-terminal transmission lines

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Balimidi Mallikarjuna ◽  
Pudi Shanmukesh ◽  
Dwivedi Anmol ◽  
Maddikara Jaya Bharata Reddy ◽  
Dusmanta Kumar Mohanta
Keyword(s):  
Transmission Lines ◽  
Distance Relays ◽  
Adaptive Zone

Differential Equation Based Adaptive Distance Relaying Setting Method for Series Compensated Line

2014 ◽  
Vol 1044-1045 ◽  
pp. 482-485
Author(s):  
Jin Hu Zhang ◽  
Zhen Yu Xu ◽  
Zhi Peng Su
Keyword(s):  
Differential Equation ◽  
Transmission Lines ◽  
Distance Relay ◽  
Iterative Calculation ◽  
Simple Simulation ◽  
Simulation Results ◽  
Distance Relays ◽  
Distance Relaying

The distance relays of transmission lines find limitations in the presence of series compensated capacitor. One of them is the distance relay setting issue, in which either over-reach problem or under-reach problem may occur. To deal with this issue, a differential equation based adaptive distance relaying setting method for series compensated line is proposed. As for it do not need to identify whether SC/MOV is in fault loop, not need to know the parameters and the operating states of SC/MOV/GAP, and furthermore, it can be realized without the iterative calculation, it is very suitable to be used for the distance relaying adaptive setting of series compensated line. Simple simulation results certificate the proposed adaptive setting method.

scholarly journals A Study on an Out-of-Step Detection Algorithm Using the Time Variation of Complex Power: Part I, Mathematical Modeling

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4065
Author(s):  
You-Jin Lee ◽  
Jeong-Yong Heo ◽  
O-Sang Kwon ◽  
Chul-Hwan Kim
Keyword(s):  
Transmission Lines ◽  
Smart Grids ◽  
Detection Algorithm ◽  
Grid System ◽  
Step Detection ◽  
Power Swing ◽  
Complex Power ◽  
Power Part ◽  
Micro Grid ◽  
The Stability

Power quality and stability have become the most important issues in power system operations, Micro Grids, and Smart Grids. Sensitive equipment can be seriously damaged when exposed to unstable power swing conditions. An unstable system may cause serious damage to Micro Grid System elements such as generators, transformers, transmission lines, and so forth. Therefore, out-of-step detection is essential for the safe operation of a Micro Grid system. In general, Equal Area Criterion (EAC) is a method for evaluating the stability of Smart Grid systems. However, EAC can be performed only if it is possible to analyze the active power and generator angle. This paper presents an analysis of the trajectory of complex power using a mathematical model. The variation of complex power is analyzed using a mathematical method, and then the relationship between complex power and EAC is presented, and a simulation performed. Later, in part II, a novel out-of-step detection algorithm based on part I will be presented and tested.

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