Refine your search
Collections
Co-Authors
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Singh, Manohar
- Protection Algorithm for Photovoltaic Based Distribution System
Abstract Views :175 |
PDF Views:0
Authors
Affiliations
1 M.E. Student, Power and Energy system dept.,University Visveshwaraya College of Engineering Bangalore-560001, IN
2 Associate Professor, EEE Department, University Visveshwaraya College of Engineering Bangalore-560001, IN
3 Power System Division, Central Power Research Institute, Bangalore- 560080, IN
1 M.E. Student, Power and Energy system dept.,University Visveshwaraya College of Engineering Bangalore-560001, IN
2 Associate Professor, EEE Department, University Visveshwaraya College of Engineering Bangalore-560001, IN
3 Power System Division, Central Power Research Institute, Bangalore- 560080, IN
Source
Power Research, Vol 12, No 4 (2016), Pagination: 765-772Abstract
Distributed Energy Resources (DERs) are small size power generating sources installed to electricity requirement of small scale electricity customers. Zero emission and renewable feature make them as popular choice for future energy demand particularly in peak demand in public utility network. The design of a protection scheme for their safe operation during utility tied connection and islanded mode of operation is an essential operational requirement. As the density of the photovoltaic based distributed energy resources increase in the distribution systems, the fault current contribution from these resources becomes comparable with the fault current from utility substation. Additionally the fault infeed for PV system is close to their loading limits and this possesses a great challenge for design of protection schemes. In this research article, a voltage and current based protection algorithm is presented which can accurately discriminate between the fault currents seen during utility tied and islanded mode of operation. The proposed algorithm is implemented in IEEE 9 bus reference network.Keywords
Distribution energy resources, Photovoltaic, Voltage-current time inverse relay characteristics and distribution system
- Intelligent distance to over current relay coordination in sub-transmission networks
Abstract Views :173 |
PDF Views:0
Authors
Affiliations
1 Engineering officer, PSD, CPRI, Bangalore - 560 080, IN
2 M Tech student, Electrical Department, KL University, Andhra Pradesh - 522 502, IN
3 Professor, Electrical Department, KL University, Andhra Pradesh - 522 502, IN
1 Engineering officer, PSD, CPRI, Bangalore - 560 080, IN
2 M Tech student, Electrical Department, KL University, Andhra Pradesh - 522 502, IN
3 Professor, Electrical Department, KL University, Andhra Pradesh - 522 502, IN
Source
Power Research, Vol 11, No 2 (2015), Pagination: 287-296Abstract
Sub-transmission power networks are primarily protected by distance relays and over current relays are used as backup relay due to their poor operational speed. Coordination of distance to over current relays is achieved in this research paper by optimally selecting the over current relay parameters which constitutes relay time-inverse characteristics and relay parameters and zone-2 setting of distance relays. Solving such type of combine distance to over current relay coordination problems is tedious job using the conventional optimization methods. Therefore an evolutionally based optimization techniques is applied in this research paper which selects the optimal over current relay parameters, user defined time inverse relay characteristics and zone-2 settings of the distance relaysKeywords
Relay coordination, distance relay, over current relay, sub transmission system, differential evolution- High Impendance Fault Detection in Distribution System under Distributed Generation
Abstract Views :198 |
PDF Views:0
Authors
Affiliations
1 *Engineering Officer Grade-3, Power System Division, Central Power Research Institute, Bangalore-560080, IN
1 *Engineering Officer Grade-3, Power System Division, Central Power Research Institute, Bangalore-560080, IN
Source
Power Research, Vol 10, No 2 (2014), Pagination: 245-252Abstract
Conventional power distribution systems are radial in nature, characterized by a single source feeding a network of downstream feeders. Location of faults in such power networks is very challenging when fault resistance is quite high. In distribution systems, fault location algorithms primarily utilize the fault current amplitude for deciding the nature and location of the faults. However, the distribution systems become radial nature when distributed generation sources are connected with them. Under such circumstance mere magnitude of fault current is not sufficient to locate and classify the fault on the power feeders. Additional fault informations are required for identification of faults in the interconnected power distribution systems.
This presented paper suggests a novel algorithm, which can detect the high impendence fault based on transient behavior of fault currents. The proposed algorithm utilizes the transient energy content of the high impendence fault signals for detecting the faults in the distribution networks. The PSCAD/EMTDC software is used for simulation for the faults in the power network under study.
Keywords
Transient Energy, Distributed Generation, Discrete Wavelet Transform, High Impendence Fault- An Empirical Relationship for Capacitor Bank Requirement for Distribution Utilities
Abstract Views :310 |
PDF Views:0
Authors
Athira Unni
1,
Manohar Singh
1
Affiliations
1 Engineering Officer, Power Systems Division, CPRI, Bengaluru – 560080, Karnataka, IN
1 Engineering Officer, Power Systems Division, CPRI, Bengaluru – 560080, Karnataka, IN
Source
Power Research, Vol 16, No 2 (2020), Pagination: 163-171Abstract
Load growth and seasonal variations in loading pattern are two key factors for the poor voltage profile in power distribution utilities (DISCOM). Shunt capacitor banks are the most economical compensating devices widely preferred for local reactive power management & voltage control in these utilities. In most of the large sized power systems, the network data is not readily available for modelling DISCOM and this is a great hurdle for identifying reactive power compensation requirement for DISCOM. Regional Power Committees are engaged in coordination with transmission utilities for management of reactive power exchange for better voltage control during their operations. Regional Power Committee are not in a position to validate/guide the DISCOM for Capacitor Bank requirement due to non-availability of DISCOM Network. In this article, an empirical relationship for capacitor bank requirement for DISCOM has been developed based on the variation in loading profile and nature of loading for a defined DISCOM network. This identified capacitor bank requirement is validated against the amount of compensation needed at upstream transmission substation level. In this research work, it has been observed that proposed empirical relationship for capacitor bank requirement is quite a handily tool for estimating capacitor requirement without modelling the DISCOM network.Keywords
Capacitor Banks, Distribution Networks, Load Flow, Peak Loading, Voltage Control.References
- Prabha K. Power system stability and control. McGraw- Hill; 1994.
- IEGC, Regulation. 2010
- Haque MH. Determination of steady-state voltage stability limit using P-Q curve. IEEE Power Engineering Review. 2002; 22(4):71–2. https://doi.org/10.1109/MPER.2002.4312118
- Ajjarapu V. Computational techniques for voltage stability assessment and control. New York: Springer; 2007. https:/ doi.org/10.1007/978-0-387-32935-2
- Kazemi A, Sadeghi M. Distributed generation allocation for loss reduction and voltage improvement. 2009 Asia-Pacific Power and Energy Engineering Conference, Wuhan; 2009. p. 1–6. https://doi.org/10.1109/APPEEC.2009.4918287
- Ajjarapu V, Christy C. The continuation power flow: a tool for steady state voltage stability analysis. IEEE Transactions on Power Systems. 1992 Feb; 7(1):416–23. https://doi.org/10.1109/59.141737
- Tamp F, Ciufo P. A sensitivity analysis toolkit for the simplification of MV distribution network voltage management. IEEE Transactions on Smart Grid. 2014 5(2):559–68. https://doi.org/10.1109/TSG.2014.2300146
- Singh M, Vardhan TV, Pradhan J, Meera KS. Reactive power management in transmission networks. 2017 7th International Conference on Power Systems (ICPS), Pune; 2017. p. 568–72. https://doi.org/10.1109/ICPES.2017.8387358
- Dixon J, Moran L, Rodriguez J, Domke R. Reactive power compensation technologies: State-of-the-art review. Proceedings of the IEEE. 2005 93(12):2144–64. https://doi.org/10.1109/JPROC.2005.859937
- Ng HN, Salama MMA, Chikhani AY. Classification of capacitor allocation techniques. IEEE Transactions on Power Delivery. 2000 15(1):387–92. https://doi.org/10.1109/61.847278
- Bae YG. Analytical method of capacitor allocation on distribution primary feeders. IEEE Transactions on Power Apparatus and Systems. 1978 PAS-97(4):1232–8. https:// doi.org/10.1109/TPAS.1978.354605
- Lakra NS, Prakash P, Jha RC. Power quality improvement of distribution system by reactive power compensation. 2017 International Conference on Power and Embedded Drive Control (ICPEDC), Chennai; 2017. https://doi.org/10.1109/ICPEDC.2017.8081125
- Askarzadeh A. Capacitor placement in distribution systems for power loss reduction and voltage improvement: A new methodology. IET Generation, Transmission and Distribution. 2016; 1(14):3631–8. https://doi.org/10.1049/ iet-gtd.2016.0419
- El-Ela AAA, El-Sehiemy RA, Kinawy A, Mouwafi MT. Optimal capacitor placement in distribution systems for power loss reduction and voltage profile improvement. IET Generation, Transmission and Distribution. 2016; 10(5):1209–21. https://doi.org/10.1049/iet-gtd.2015.0799
- de Souza BA, Alves HN, Ferreira HA. Microgenetic algorithms and fuzzy logic applied to the optimal placement of capacitor banks in distribution networks. IEEE Transactions on Power Systems. 2004 19(2):942–7. https://doi.org/10.1109/TPWRS.2004.825901
- Cho MY, Chen YW. Fixed/switched type shunt capacitor planning of distribution systems by considering customer load patterns and simplified feeder model. IEE Proceedings - Generation, Transmission and Distribution. 1997 144(6):533–40. https://doi.org/10.1049/ip-gtd:19971387
- Masoum MAS, Ladjevardi M, Jafarian A, Fuchs EF. Optimal placement, replacement and sizing of capacitor Banks in distorted distribution networks by genetic algorithms. IEEE Transactions on Power Delivery. 2004 19(4):1794–801. https://doi.org/10.1109/TPWRD.2004.835438
- Swarnkar A, Gupta N, Niazi KR. Optimal placement of fixed and switched shunt capacitors for large-scale distribution systems using genetic algorithms. IEEE; 2010. https://doi.org/10.1109/ISGTEUROPE.2010.5638938
- PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe), Gothenberg; 2010.
- Short Circuit Modelling and Analysis of PV Inverters in Large Solar Farms
Abstract Views :73 |
PDF Views:0
Authors
Affiliations
1 Power System Division, Central Power Research Institute, Bengaluru – 560012, Karnataka, IN
1 Power System Division, Central Power Research Institute, Bengaluru – 560012, Karnataka, IN
Source
Power Research, Vol 17, No 2 (2021), Pagination: 67-74Abstract
The short circuit behavior of solar farms are different from conventional generating stations. These generating resources are static in nature and have a rich power electronic interface with a grid, limiting these solar farms’ short circuit capabilities. The solar inverter voltage versus short circuit current characteristics is modeled to supply the fault current within inverter designed ratings. In this research paper, a large number of solar power investors are grouped to pool their power into the grid. Short circuit studies are carried out for a 500 MW solar farm with string inverters rating of 3125 kW per IEC 60909. The protective relaying coordination is performed as per IEEE C37.90 and IEC 60255-1 relaying standardKeywords
Relay Coordination, Renewable Solar Park, Transient Short Circuit Analysis, IEC 60909References
- Eltawil MA, Zhao Z. Grid-connected photovoltaic power systems: Technical and potential problems-A review. Renewable and Sustainable Energy Reviews. 2010; 14(1). https://doi.org/10.1016/j.rser.2009.07.015
- Khattijit N, Oranpiroj K, Muangjai W. The evaluation of short circuit current to achieve optimal design and protection for elements in power network with renewable energy. 2018 International Electrical Engineering Congress (iEECON); 2018. https://doi.org/10.1109/IEECON.2018.8712280
- Varma RK. Impacts of high penetration of solar PV systems and smart inverter developments. Smart Solar PV Inverters with Advanced Grid Support Functionalities, IEEE; 2022. https://doi.org/10.1002/9781119214236
- Srujan D, Ghanasyam P, Mitra A. An improved fault ridethrough of grid integrated solar PV system. 2019 IEEE Region 10 Symposium (TENSYMP); 2019. https://doi.org/10.1109/TENSYMP46218.2019.8971242
- Sherkar S, Pamu S, Mitra A. Assessing the impacts of integration of Solar PV on transient stability of the power system using a sensitivity based index. 2019 8th International Conference on Power Systems (ICPS); 2019. https://doi.org/10.1109/ICPS48983.2019.9067593
- Impram S, Nese SV, Oral B. Challenges of renewable energy penetration on power system flexibility: A survey. Energy Strategy Reviews. 2020; 31. https://doi.org/10.1016/j.esr.2020.100539
- Zhang Y, Zhu S, Sparks R, Green I. Impacts of solar PV generators on power system stability and voltage performance. 2012 IEEE Power and Energy Society General Meeting; 2012. https://doi.org/10.1109/PESGM.2012.6344990
- Emmanuel M, Doubleday K, Cakir B, Marković M, Hodge B-M. A review of power system planning and operational models for flexibility assessment in high solar energy penetration scenarios. Solar Energy. 2020; 210. https://doi.org/10.1016/j.solener.2020.07.017
- Kim I, Harley RG. The transient-state effect of the reactive power control of photovoltaic systems on a distribution network. International Journal of Electrical Power and Energy Systems. 2018; 99. https://doi.org/10.1016/j.ijepes.2018.01.015
- Singh M. Relay coordination algorithm with limits on minimum operating time of customized time inverse relays characteristics. 2021 9th IEEE International Conference on Power Systems (ICPS); 2021. https://doi.org/10.1109/ ICPS52420.2021.9670016
- Telukunta V, Pradhan J, Agrawal A, Singh M, Srivani SG. Protection challenges under bulk penetration of renewable energy resources in power systems: A review. CSEE Journal of Power and Energy Systems. 2017; 3(4):365–79. https:// doi.org/10.17775/CSEEJPES.2017.00030
- Singh M, Panigrahi BK, Abhyankar AR. Optimal overcurrent relay coordination in distribution system. 2011 International Conference on Energy, Automation and Signal; 2011. https://doi.org/10.1109/ICEAS.2011.6147214
- Sookrod P, Wirasanti P. Overcurrent relay coordination tool for radial distribution systems with distributed generation. 2018 5th International Conference on Electrical and Electronic Engineering (ICEEE); 2018. https://doi.org/10.1109/ICEEE2.2018.8391292
- Hasan KN, Preece R, Milanović JV. Existing approaches and trends in uncertainty modelling and probabilistic stability analysis of power systems with renewable generation. Renewable and Sustainable Energy Reviews. 2019; 101. https://doi.org/10.1016/j.rser.2018.10.027