Simulation of Distance Protection for Parallel Transmission Lines

2017 ◽  
Author(s):  
Mohammed Al-Mahrooqi ◽  
Mahnd AL-Yaqoubi ◽  
Haitham AL-Ghafri ◽  
Mohammed AL-Saadi ◽  
Hisham Soliman ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Distance Protection ◽  
Parallel Transmission

Study on a New Earth-Fault Distance Protection for Four-Circuit Transmission Lines on the same Tower

2013 ◽  
Vol 706-708 ◽  
pp. 1574-1579
Author(s):  
Pei Yu Guo ◽  
Zhon Gan Yu ◽  
Neng Ling Tai ◽  
Chun Ju Fan
Keyword(s):  
Transmission Lines ◽  
High Sensitivity ◽  
Distance Protection ◽  
Parallel Transmission ◽  
Earth Fault ◽  
Sequence Components ◽  
Components Method ◽  
The Relationship ◽  
Complex Transmission ◽  
High Voltage System

Since the transmission corridors are becoming more and more valuable and the demand for transmission capacity is continually increasing, the four-circuit transmission lines on the same tower have been used more and more in the high-voltage system. For this complex transmission system, there is an unpredictable mutual inductance error when measures the impedance, which will potentially cause the mal-operation of relay. Therefore, it is not feasible to use the traditional earth-fault distance protection in case of the single phase to earth fault. In this paper, twelve-sequence components method is introduced to decouple mutual electromagnetic effect between four-parallel transmission lines. Based on the analysis of the features of each component, the relationship between fault voltage and the current is presented. Furthermore, a new protection criterion for earth-fault distance protection is proposed. The new method has high sensitivity and reliability under different scenarios.

scholarly journals Distance Protection of Series Capacitor Compensated Lines: Practical Considerations, Industrial Status and Development

Electricity ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 168-186
Author(s):  
Md Tanbhir Hoq ◽  
Nathaniel Taylor
Keyword(s):  
Transmission Lines ◽  
Transmission Network ◽  
Distance Protection ◽  
Academic Literature ◽  
System Protection ◽  
The Status ◽  
In Series ◽  
Insight Into ◽  
Series Capacitor ◽  
Current Inversion

The introduction of series capacitors in transmission lines causes problems in terms of reliability and the security of distance protection relays. As distance protection is widely used in the transmission network, the challenge of applying it to series compensated lines has been taken up by utilities and relay manufacturers in various ways. In the field of power system protection, developments are largely driven by relay manufacturers, and are often not published in the academic literature; the status and trend of the relay manufacturer’s development are better found in their product manuals and patent activity. Further insight into specific implementations by transmission utilities can be found from publications in industry-led forums and some academic journals. This article surveys the status and development of distance protection for series compensated lines, with a focus on industrial implementation and practical considerations. Factors that influence the protection of series compensated lines are presented. Implementation examples reported by utilities are summarized as examples of the different situations encountered and the methods used to deal with them. It is observed that many utilities use communication-aided protection in series compensated lines, and distance protection is used with reduced reach. Solutions described in relay manuals are presented to demonstrate the manufacturers’ approaches to problems associated with series capacitor protection. While there are methods to counter voltage inversion, current inversion seems to represent a more serious challenge. A patent overview indicates the trends in this domain to be moving towards time-domain-based faster protection methods.

A phasor-distance based faulty phase detection and fault classification technique for parallel transmission lines

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Nishant Kothari ◽  
Bhavesh R. Bhalja ◽  
Vivek Pandya ◽  
Pushkar Tripathi ◽  
Soumitri Jena
Keyword(s):  
Transmission Lines ◽  
Power Flow ◽  
Detection Algorithm ◽  
Current Transformer ◽  
Operating Conditions ◽  
Fault Classification ◽  
Phase Detection ◽  
Parallel Transmission ◽  
Classification Technique ◽  
Computational Requirement

AbstractThis paper presents a phasor-distance based faulty phase detection and fault classification technique for parallel transmission lines. Detection and classification of faulty phase(s) have been carried out by deriving indices from the change in phasor values of current with a distance of one cycle. The derived indices have zero values during normal operating conditions whereas the index corresponding to the faulty phase exceeds the pre-defined threshold in case of occurrence of a fault. A separate ground detection algorithm has been utilized for the identification of involvement of ground in a faulty situation. The performance of the proposed technique has been evaluated for intra-circuit, inter-circuit and simultaneous faults with wide variations in system and fault conditions. The suggested technique has been evaluated for over 23,000 diversified simulated fault cases as well as 14 recorded real fault events. The performance of the proposed technique remains consistent under Current Transformer (CT) saturation as well as different amount and direction of power flow. Moreover, suitability to different power system network has also been studied. Also, faults having fault current less than pre-fault conditions have been detected accurately. The results obtained suggest that it is able to detect faulty phases as well as classify faults within quarter-cycle from the inception of fault with impeccable accuracy. Besides, as modern digital relays have been already equipped with phasor computation facility, phasor-based technique can be easily incorporated with relative ease. At last, a comparative evaluation suggests its superiority in terms of fault classification accuracy, fault detection time, diversify fault scenarios and computational requirement among other existing techniques.

scholarly journals Enhancing Distance Protection of Long Transmission Lines Compensated With TCSC and Connected With Wind Power

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 46717-46730
Author(s):  
Ahmed Abdel Rahman Mohamed ◽  
Hebatallah Mohamed Sharaf ◽  
Doaa Khalil Ibrahim
Keyword(s):  
Wind Power ◽  
Transmission Lines ◽  
Distance Protection

Identification of a Best Algorithm for Digital Distance Protection of Transmission Lines

1983 ◽  
Vol PER-3 (10) ◽  
pp. 33-33
Author(s):  
B. Jeyasurya ◽  
W. J. Smolinski
Keyword(s):  
Transmission Lines ◽  
Distance Protection
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