1/7. Discussion paper on Substation - Switchgear Coordination by Hermann Koch, Chairman Substations Committee Siemens High Voltage, Erlangen Germany
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1 1/7 Disussion pper on Susttion - Swithger oordintion y Hermnn Koh, hirmn Susttions ommittee Siemens High Voltge, Erlngen Germny 1. Sttus The tehnil work in the Susttions nd Swithger ommittee often is rising questions of who would e responsile or who ould do the work the est. Stndrdiztion itself needs ler defined orders of responsiility to void onflits in stndrds nd with this onfusion of the users of stndrds. In the prtil world this question is oming with eh projet nd needs to e solved. Most ses re ler, ut some times lrifition is needed. lso on the orderline etween Susttions nd Swithger ommittee questions ome up. This disussion pper will give some ides out how IE S 17 nd S 17 hs solved this oordintion prolem. 2. IE The title nd sope of IE S 17 sys: High-voltge swithger nd ontrolger To prepre interntionl stndrds regrding speifitions for high-voltge swithger nd ontrolger rted ove 1 kv.. or ove 1,5 kv d.. while the title nd sope of S 17 sys: High-voltge swithger nd ontrolger ssemlies To prepre interntionl stndrds overing prefrited ssemlies whih re omintion of one or more prts of swithger nd ontrolger exeeding 1 kv.., together with ssoited ontrol nd power equipment, mesuring, signlling, protetive, regulting equipment et. Gs-insulted trnsmission lines re in the sope of S 17. The min differene is on the little word "ssemlies". smll word with ig mening. H:\Koh\Veröffentlihungen\Honorrnträge\2009\ IEEE-Susttions-Knss\IE-IEEE-Disussion-Pper\IE-IEEE-Disussion pper on Susttion.do
2 2/7 To explin it is etter to turn into the question: Wht re not ssemlies? Not ssemlies re devies whih follow one funtion or omintion of funtions in one devie. For exmple: iruit reker is one funtion using one interruption hmer, one driving mehnism nd hs two terminl nd. The sme ould e sid for disonnetor swith nd ground swith. In se the devie hs two funtions s the omined disonnetor iruit reker where the disonneting funtion is mde y using lrger gps. In prtie to use 170 kv devie in 110 kv pplition. In suh ses Fig. 1 pplies. Devie Fig. 1: Devie funtion or omined funtion 3. ssemlies Wht re now ssemlies? In IE working group WG 17 developed definitions for ssemlies, whih hs een pulished s: IE Ed.1: High-voltge swithger nd ontrolger Prt 205: ompt swithger ssemlies for rted voltges ove 52 kv. This IE work is sed on results of working group WG 3.20 IGRE Study ommittee 3 Susttions whih investigted the question of different swithger tehnologies. The result hs een pulished in Novemer 2008 s study ommittee report under the titel: Evlution of Different Swithger Tehnologies (IS, MTS, GIS) for Rted Voltges of 52 kv nd ove The following exmples re prt of the IE in nnex, nd illustrte some possile ompt swithger ssemlies. Sine there re mny possile solutions the types shown elow re for inditive purposes only. ompt swithger ssemlies my onsist of ir-insulted devies, gs-insulted devies or omintion of oth. Type 1: ssemly of independently operted swithing devies nd/or devies whih re onneted y short onneting prts on ommon se frme (similr to onventionl susttion design). H:\Koh\Veröffentlihungen\Honorrnträge\2009\ IEEE-Susttions-Knss\IE-IEEE-Disussion-Pper\IE-IEEE-Disussion pper on Susttion.do
3 3/7 Type 2: Type 3: ssemly of independently operted swithing devies nd/or devies shring prts of the neighouring swithing devie or devie. ssemly of independently operted swithing devies nd/or devies eing integrted in nother swithing devie. List of revitions for figure.1,.2,.3 nd.4 Disonnetor 1 Prt of disonnetor 1 1 Prt of disonnetor 1 iruit-reker ES Erthing swith T urrent trnsformer VT Voltge trnsformer S Surge rrester H:\Koh\Veröffentlihungen\Honorrnträge\2009\ IEEE-Susttions-Knss\IE-IEEE-Disussion-Pper\IE-IEEE-Disussion pper on Susttion.do
4 4/7 T VT S Figure.1 - Exmple for type 1 T S/VT ES T S/VT Figure.2 - Exmple for type 2 H:\Koh\Veröffentlihungen\Honorrnträge\2009\ IEEE-Susttions-Knss\IE-IEEE-Disussion-Pper\IE-IEEE-Disussion pper on Susttion.do
5 5/ Figure.3 - Exmple for type 3 Devies of type 3 with ommon enlosure (single-pole or three-pole enpsulted) forming single omprtment Figure.4 - Exmple for type 3 4. The Priniple The priniple ehind this logi is tht the detils of ny devie shll e in the hnds of these experts: iruit reker, disonnetors, ground swith. ny detiled requirement linked to these devies re overed y their stndrds. H:\Koh\Veröffentlihungen\Honorrnträge\2009\ IEEE-Susttions-Knss\IE-IEEE-Disussion-Pper\IE-IEEE-Disussion pper on Susttion.do
6 6/7 When it omes to ssemlies the required knowledge is different, not so muh the single detil of devie, e. g. interruption hmer is in fous, nd it is more the well djusted oordintion of ny single devie to funtion orretly s system. The fous is on intertions e. g. like therml heting up from one devie to nother or mehnil impt in virtions or shoks etween devies. The IE does not hve Susttions ommittee s we hve. When these simple priniples re pplied to susttions we would see the fous lerly. Susttions ommittee To e responsile for funtions ssemled from single devies in susttion nd their tehnil, eologil, sfety nd ost intertions. Swithger ommittee To e responsile for devies with single or omined funtions in one devie in tehnil, eologil, sfety nd ost spets. Wider View In wider view it the Susttions ommittee hs the overlooking funtion of ll devies used in susttions nd their intertions. This inludes swithger, trnsformers, les nd other devies. The ler line lwys is the single or omined funtion of devies nd the impt of ssemlies of suh funtions. H:\Koh\Veröffentlihungen\Honorrnträge\2009\ IEEE-Susttions-Knss\IE-IEEE-Disussion-Pper\IE-IEEE-Disussion pper on Susttion.do
7 7/7 5. onlusion The future of stndrds is going to more system-orientted pproh. Mrket will sk stndrdising more omplex solution. Simplified stndrds re needed to keep the lerlyness of understnding nd the simple pplition of stndrds. si gol for stndrdistion: Keep it s simple s possile. We shll tke the opportunity to improve! In first step offiers of the relted ommittees shll get together nd try to simplify the stndrds orgnistion. In IE we needed severl yers to get this solution etween two ommittees. It s not n esy tsk, ut it is vlule to think out it. H:\Koh\Veröffentlihungen\Honorrnträge\2009\ IEEE-Susttions-Knss\IE-IEEE-Disussion-Pper\IE-IEEE-Disussion pper on Susttion.do
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