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Control strategies for reactive shunts to improve long-term voltage stability
Voltage collapse was one of the main causes for many recent blackouts. The direct link between voltage stability and reactive power balance in the system leads to more attention toward reactive power resources in the power systems. Shunt reactors and capacitors are used to balance reactive power in...
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creator | Tirtashi, M. Reza Safari Samuelsson, Olof Svensson, Jörgen |
description | Voltage collapse was one of the main causes for many recent blackouts. The direct link between voltage stability and reactive power balance in the system leads to more attention toward reactive power resources in the power systems. Shunt reactors and capacitors are used to balance reactive power in the power systems. The strategy to control them in both normal and emergency conditions is an important issue. This paper deals with two different strategies for automatic switching of shunt reactors and capacitors in the power systems. The first control strategy, called the local scheme, switches the shunt when the voltage at the local bus is outside the tolerance band. In the second control strategy, called neighboring scheme, local voltage as well as voltage at neighboring buses are used. Dynamic simulations of the NORDIC 32 test system show that the neighboring scheme improves voltage compared to the local one. In the simulated scenario a blackout is avoided by using the neighboring scheme. This is explained using PV curves for a new test system reflecting the key behavior of NORDIC 32. |
doi_str_mv | 10.1109/UPEC.2013.6715028 |
format | conference_proceeding |
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Reza Safari ; Samuelsson, Olof ; Svensson, Jörgen</creator><creatorcontrib>Tirtashi, M. Reza Safari ; Samuelsson, Olof ; Svensson, Jörgen</creatorcontrib><description>Voltage collapse was one of the main causes for many recent blackouts. The direct link between voltage stability and reactive power balance in the system leads to more attention toward reactive power resources in the power systems. Shunt reactors and capacitors are used to balance reactive power in the power systems. The strategy to control them in both normal and emergency conditions is an important issue. This paper deals with two different strategies for automatic switching of shunt reactors and capacitors in the power systems. The first control strategy, called the local scheme, switches the shunt when the voltage at the local bus is outside the tolerance band. In the second control strategy, called neighboring scheme, local voltage as well as voltage at neighboring buses are used. Dynamic simulations of the NORDIC 32 test system show that the neighboring scheme improves voltage compared to the local one. In the simulated scenario a blackout is avoided by using the neighboring scheme. 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The first control strategy, called the local scheme, switches the shunt when the voltage at the local bus is outside the tolerance band. In the second control strategy, called neighboring scheme, local voltage as well as voltage at neighboring buses are used. Dynamic simulations of the NORDIC 32 test system show that the neighboring scheme improves voltage compared to the local one. In the simulated scenario a blackout is avoided by using the neighboring scheme. This is explained using PV curves for a new test system reflecting the key behavior of NORDIC 32.</description><subject>Capacitors</subject><subject>Inductors</subject><subject>Power system stability</subject><subject>Shunts (electrical)</subject><subject>Stability analysis</subject><subject>Switches</subject><subject>Voltage control</subject><isbn>147993254X</isbn><isbn>9781479932542</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2013</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><recordid>eNotj8tKAzEYheNCUGsfQNzkBabmTya3pQz1AhVdWHBXMvGfMTIzKUks9O0daFcHDh-H7xByB2wFwOzD9mPdrDgDsVIaJOPmgtxAra0VXNZfV2SZ8y9jDKyyTNhr8tbEqaQ40FySK9gHzLSLiSZ0voQD0vzzN5VMS6Rh3Kc4N0Oc-qpgGukhDsX1M1NcG4ZQjrfksnNDxuU5F2T7tP5sXqrN-_Nr87ipAq_rUnGNvNWeic6A4oIZ6Zzz_tsDOKOtkMbWvpuVEby3rVBCGylAKbSOddKJBbk_7QZE3O1TGF067s6PxT8FW00n</recordid><startdate>201309</startdate><enddate>201309</enddate><creator>Tirtashi, M. 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Reza Safari</creatorcontrib><creatorcontrib>Samuelsson, Olof</creatorcontrib><creatorcontrib>Svensson, Jörgen</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Explore</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Tirtashi, M. Reza Safari</au><au>Samuelsson, Olof</au><au>Svensson, Jörgen</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Control strategies for reactive shunts to improve long-term voltage stability</atitle><btitle>2013 48th International Universities' Power Engineering Conference (UPEC)</btitle><stitle>UPEC</stitle><date>2013-09</date><risdate>2013</risdate><spage>1</spage><epage>5</epage><pages>1-5</pages><eisbn>147993254X</eisbn><eisbn>9781479932542</eisbn><abstract>Voltage collapse was one of the main causes for many recent blackouts. The direct link between voltage stability and reactive power balance in the system leads to more attention toward reactive power resources in the power systems. Shunt reactors and capacitors are used to balance reactive power in the power systems. The strategy to control them in both normal and emergency conditions is an important issue. This paper deals with two different strategies for automatic switching of shunt reactors and capacitors in the power systems. The first control strategy, called the local scheme, switches the shunt when the voltage at the local bus is outside the tolerance band. In the second control strategy, called neighboring scheme, local voltage as well as voltage at neighboring buses are used. Dynamic simulations of the NORDIC 32 test system show that the neighboring scheme improves voltage compared to the local one. In the simulated scenario a blackout is avoided by using the neighboring scheme. This is explained using PV curves for a new test system reflecting the key behavior of NORDIC 32.</abstract><pub>IEEE</pub><doi>10.1109/UPEC.2013.6715028</doi><tpages>5</tpages></addata></record> |
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source | IEEE Electronic Library (IEL) Conference Proceedings |
subjects | Capacitors Inductors Power system stability Shunts (electrical) Stability analysis Switches Voltage control |
title | Control strategies for reactive shunts to improve long-term voltage stability |
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