GIS ASSESSMENT By Tim RJBR A Study of …

GIS di RJBR  GIS GITET Saguling Merk : Mitshubishi/Alsthom Sistem 500 kV Outdoor  GIS Kiaracondong Merk : Alsthom Sistem 150 kV Indoor  GIS Cibabat Merk : Alsthom Sistem 150 kV Indoor

GIS Cibabat

Failure Path untuk assessment GIS Fungsi Insulasi Kelembaban SF6 tinggi Adanya Uap Air (H 2 O) Korosif Kontak/ Konduktor Timbulnya Kadar Asam (HF) Partial Discharge Terbentuknya partikel bebas Fungsi Current Carrying Losses Transfer Daya Fungsi Switching Kegagalan driving mechanism Kegagalan fungsi rele bantu Perubahan Fisik Konduktor Arcing Decomposition products (gas & powder form) Adanya Kebocoran (gas leakage)

Metode Inspeksi Fungsi Parameter Terukur Metode InspeksiStandard InsulationTekanan Gas (Bar) Gas Leakage Test Inspeksi Pressure Gauge Purity (% kemurnian) Purity Test > 97% (IEC 326) Moisture (°C, ppmv) Dew Point Test -15°C / 230 ppmv (CB) -15°C / 350 ppmv (on Load switch) -10°C / 530 ppmv (other < 170 kV switchgear ) 10°C / 390 ppmv (other > 245 kV switchgear ) STANDAR ALSTOM Decomposisi Product (ppmm) Decomposition products Test <1000 ppmm STANDAR CIGRE Partial Discharge (Coulomb) PD Analysis Keasaman SF6 (ppmv) Measurement of SO2

CIGRE B3.02 TASK FORCE 01

Metode inspeksi Fungsi Parameter Terukur Metode Inspeksi Current CarryingTahanan kontak (µΩ) Contact Resistance Measurement Suhu kontak Thermo-Vision

Metode inspeksi Fungsi Parameter Terukur Metode Inspeksi Switching Keserempakan kerja kontak (msec) Breaker Analyzer Resistansi dinamik CB (Ohm) Dynamic resistance test Tekanan minyak hidrolik (bar) Driving mechanism check Kondisi Fisik Interrupter Inspection (Over Haul)

Pemeliharaan berdasarkan Manual Instruction GIS Cibabat 150 kV - Alshtom

CB INSPECTION Maintenance Chart of Circuit Breaker TypePeriodExecution Standard Visual checkapprox. annually station staff - Gas moisture, maximum permissible moisture content of SF6 gas must not exceed 350 ppmv. -Cumulated Short Circuit Current ∑(I)2=20'000 (kA)2 - Number of Short Circuit Interuptions (nI) - Duration in system operation (a) a= nI / 0.04 x L a<=20 Check of condition approx. every 5 years Extended check approx. every years Reconditioni ng approx. every years or after 2500 operations or after cumulated square of breaking current is reached or if required by the results of the checks by manufacturer or supervised by manufacturer

CB INSPECTION Maintenance Chart of Circuit Breaker TypePeriodProcedureExecution Standard Visual checkapprox. annually- oil level trip dash pot - function of heating element of operating mechanism - operations counter reading station staff- If there are traces of oil at the top end of the dash-pot, the dash-pot must be replaced and reconditioned - Read-off and record the number of switching operations. - Gas moisture, maximum permissible moisture content of SF6 gas must not exceed 350 ppmv. - Cumulated Short Circuit Current ∑(I)2=20'000 (kA)2 - Number of Short Circuit Interuptions (nI) - Duration in system operation (a) a= nI / 0.04 x L a<=20 Check of condition approx. every 5 years in addition to visual check : - test operation ON-OFF Extended checkapprox. every years in addition to visual check : - test operation ON-OFF - lubrication-check of mechanism- gear - check of linkage adjustment Reconditioningapprox. every years or after 2500 operations or after cummulated square of breaking current is reached or if required by the results of the checks - check or replace contacts and nozzle - check mechanically operating components inside or outside of gas compartment - exchange of seals on operating shaft - check and replenish oil or trip dash pot - lubrication of mechanism and linkage - through cleaning - check of adjustments - test operations by manufacturer or supervised by manufacturer

DS INSPECTION Maintenance chart of Disconnector TypePeriodExecutionStandard Check of function Check of condition approx. every 5 years station staff- - Running time per closing operation at rated voltage : Approx. 6s Reconditioningafter 2500 operations or if required by the checking- results by manufacturer or supervised by manufacturer

DS INSPECTION Maintenance chart of Disconnector TypePeriodProcedureExecutionStandard Check of function Check of condition approx. every 5 years - test operation ON-OFF - comparison of operating times - check of contact penetration and condition of contacts through window station staff- Rated Normal Current : 0,8 - 1,5 A - Starting Current < 3,5 A - Running time per closing operation at rated voltage : Approx. 6s Reconditioningafter 2500 operations or if required by the checking-results - check or replace contacts - replace seals of operating shaft - inspection of mechanically operating - lubrication of mechanism and linkage - cleaning of parts inside the gas compartment by manufacturer or supervised by manufacturer

ES INSPECTION Maintenance chart of Disconnector TypePeriodExecutionStandard Check of function Check of condition approx. every 5 years station staff- Rated Normal Current : 0,8 - 1,5 A - Starting Current < 3,5 A - Running time per closing operation at rated voltage : Approx. 6s Reconditio ning after 2500 operations or if required by the checking- results by manufacturer or supervised by manufacturer

ES INSPECTION Maintenance chart of Disconnector TypePeriodProcedureExecutionStandard Check of function Check of condition approx. every 5 years - test operation ON-OFF - comparison of operating times - check of contact penetration and condition of contacts through window station staff- Rated Normal Current : 0,8 - 1,5 A - Starting Current < 3,5 A - Running time per closing operation at rated voltage : Approx. 6s Reconditio ning after 2500 operations or if required by the checking- results - check or replace contacts - replace seals of operating shaft - inspection of mechanically operating - lubrication of mechanism and linkage - cleaning of parts inside the gas compartment by manufactur er or supervised by manufactur er

Measurement of SO 2 1. Pengukuran kontaminasi gas SF6 2. Kontaminasi gas SF6  SF4 + H2O → SOF2 + 2HF  WF6 + 3H2O → WO3 + 2HF  2SF2 + H2O → SOF2 + 2HF + S  2S2F2 + H2O → SOF2 + 2HF + 3S  SOF2 + H2O → SO2 + 2HF  SO2 + F2 → SO2F2  SF4 + 3H2O = H2SO4 + 4HF

Pengujian yang telah dilaksanakan

Pengujian yang telah Dilakukan NoJenis PengujianAlat UjiStandard 1Purity Test (Volume Percentage Test) DILO/3-207-R002IEC 326 2Dew Point Test (Moisture Content Test) Teims - Portable/PM 2.0 ALSTHOM & SCHNEIDER 3Decomposition Product Teims – Portable/PM 2.0 CIGRÉ 23.10

Hasil Pengujian gas SF6 di GIS Kiaracondong NO TANGGAL PENGUJIAN TEMPAT (BAY) PHASA PURITY ( % )DEW POINT DECOMPOSITI ON PRODUCTS PRESSU RE COMP. [ BAR ] TEMP. SF 6 [ °C ] KET. COMPARTMENT HASIL STANDAR IEC 326 HASIL UJI STANDARD ALSTHOM[PPM] STANDA RD CIGRÉ*) [ °C ] [PPMv ] TRAFO 3 CB (Q50) R99,1> 97, <-15° & <230367< ,327PPMv Tinggi S99,2> 97, <-15° & <230233< ,327PPMv Tinggi T99,2> 97, <-15° & <230267< ,930PPMv Tinggi DS BUS 1 (Q21) R99,1> 97, <-10° & <5300< ,930Normal S99,0> 97, <-10° & <53067< ,930Normal T98,5> 97, <-10° & <53067< ,930Normal DS BUS 2 (Q22) R98,4> 97, <-10° & <53033< ,031Normal S98,8> 97, <-10° & <53033< ,030Normal T98,6> 97, <-10° & <530167< ,026PPMv Tinggi SEALING BOX (Q28) R99,1> 97, <-10° & <530267< ,029Normal S99,4> 97, <-10° & <530300< ,928Normal T99,4> 97, <-10° & <530133< ,928Normal SEALING ENDR,S,T99,2> 97, <-10° & <530133< ,827Gas Lembab!! Dilakukan penggantian SF6 pada kompartemen Sealing End Phasa R,S,T CB (Q50) R99,3> 97, <-15° & <230733< ,223PPMv Tinggi S99,3> 97, <-15° & <230400< ,225Normal T99,2> 97,0-4196<-15° & <230200< ,230Normal SEALING ENDR,S,T99,2> 97, <-10° & <530800< ,832PPMv Tinggi PT.PLN (PERSERO) P3B REGION JAKARTA DAN BANTEN UNIT JASA TEKNIK JAKARTA

Hasil Pengujian gas SF6 di GIS Saguling NO TANGGAL PENGUJIAN TEMPAT (BAY) PHASA PURITY ( % )DEW POINT DECOMPOSITION PRODUCTS PRESSURE GAUGE [ BAR ] AMBIENT TEMP. [ °C ] KET. COMPARTMENT HASIL STANDA R IEC 376 HASIL UJI STANDARD ALSTHOM [PPM] STANDARD CIGRÉ*) [ °C ] [PPMv ] DIAMETER 1 (MITSUBISHI) DS GM 14 R99,6> 97,0-5132,8<-5° & <610233< ,131Normal S99,7> 97,0-5035,2<-5° & <610233< ,332Normal T99,7> 97,0-5036,7<-5° & <610300< ,033Normal CB 7A1 R99,9> 97,0-4753,9<-10° & <350333< ,131Normal S99,6> 97,0-4941,1<-10° & <350367< ,930Normal T99,7> 97,0-4754,2<-10° & <350567< ,734Normal DS GM 13 R99,6> 97,0-5131,7<-5° & <610333< ,432Normal S99,6> 97,0-5229,3<-5° & <61067< ,534Normal T99,7> 97,0-4941,6<-5° & <610433< ,534Normal CB 7AB1 R99,9> 97,0-4845,1<-10° & <350200< ,029Normal S99,4> 97,0-4657,4<-10° & <3500< ,932Normal T99,5> 97,0-4941,3<-10° & <350433< ,829Normal DS GM 12 R99,5> 97,0-5229,1<-5° & <610267< ,230Normal S99,6> 97,0-5229,1<-5° & <61033< ,431Normal T99,9> 97,0-5131,7<-5° & <610433< ,929Normal CB 7B1 R99,6> 97,0-4848,0<-10° & <350400< ,133Normal S99,7> 97, ,8<-10° & <3500< ,932Normal T99,7> 97,0-4940,5<-10° & <350567< ,831Normal DS GM 11 R99,6> 97,0-5231,3<-5° & <610167< ,433Normal S99,7> 97,0-5229,8<-5° & <610167< ,433Normal T99,5> 97,0-5132,8<-5° & <610567< ,331Normal

Hasil Pengujian gas SF6 di GIS Saguling NO TANGGAL PENGUJIAN TEMPAT (BAY) PHASA PURITY ( % )DEW POINT DECOMPOSITION PRODUCTS PRESSURE GAUGE [ BAR ] AMBIENT TEMP. [ °C ] KET. COMPARTMENT HASIL STANDAR IEC 376 HASIL UJI STANDARD ALSTHOM [PPM] STANDARD CIGRÉ*) [ °C ][PPMv] DIAMETER 2 (MITSUBISHI) DS GM 24 R99,8> 97,0-4851,3<-5° & <610367< ,432Normal S99,8> 97,0-4758,8<-5° & <610133< ,328Normal T99,8> 97,0-4759,5<-5° & <610100< ,530Normal CB 7A2 R99,8> 97,0-4942,7<-10° & <350167< ,931Normal S99,6> 97,0-4945,6<-10° & <350400< ,829Normal T99,8> 97,0-5042,8<-10° & <350200< ,032Normal DS GM 23 R99,7> 97,0-4946,7<-5° & <610267< ,531Normal S99,8> 97, ,3<-5° & <610367< ,430Normal T99,6> 97,0-4757,5<-5° & <61033< ,429Normal CB 7AB2 R99,7> 97,0-4660,7<-10° & <350333< ,932Normal S99,7> 97,0-4948,4<-10° & <350300< ,730Normal T99,7> 97,0-5042,7<-10° & <350433< ,030Normal DS GM 22 R99,6> 97,0-4757,2<-5° & <610367< ,332Normal S99,7> 97,0-4761,8<-5° & <610300< ,431Normal T99,7> 97,0-5137,1<-5° & < < ,430 Contaminatio ns!! CB 7B2 R99,7> 97,0-4946,1<-10° & <350200< ,032Normal S99,1> 97,0-4854,3<-10° & <35033< ,032Normal T99,9> 97,0-5043,8<-10° & <350133< ,932Normal DS GM 21 R99,9> 97,0-4666,0<-5° & <610100< ,330Normal S99,7> 97,0-4571,5<-5° & <610167< ,332Normal T99,8> 97,0-4945,1<-5° & <610233< ,433Normal

Hasil Pengujian gas SF6 di GIS Saguling NO TANGGAL PENGUJIAN TEMPAT (BAY) PHASA PURITY ( % )DEW POINT DECOMPOSITION PRODUCTS PRESSURE GAUGE [ BAR ] AMBIENT TEMP. [ °C ] KET. COMPARTMENT HASIL STANDAR IEC 376 HASIL UJI STANDARD ALSTHOM [PPM] STANDARD CIGRÉ*) [ °C ][PPMv] DIAMETER 4 (MITSUBISHI) DS GM 43 R99,9> 97, ,8<-5° & <610100< ,530Normal S99,8> 97, ,0<-5° & <610433< ,432Normal T99,8> 97, ,0<-5° & <610400< ,532Normal CB 7AB4 R99,9> 97, ,2<-10° & <35033< ,130Normal S99,6> 97, ,1<-10° & <350333< ,032Normal T99,9> 97, ,6<-10° & <350467< ,031Normal DS GM 42 R99,7> 97, ,2<-5° & <6100< ,433Normal S99,6> 97, ,3<-5° & <610133< ,532Normal T99,8> 97, ,2<-5° & <610233< ,431Normal CB 7B4 R99,8> 97, ,4<-10° & <35067< ,031Normal S99,8> 97, ,3<-10° & <35033< ,033Normal T99,7> 97, ,5<-10° & <350267< ,631Normal DS GM 41 R99,8> 97, ,0<-5° & <610200< ,431Normal S99,9> 97, ,4<-5° & <610133< ,532Normal T99,7> 97, ,7<-5° & <610467< ,533Normal

Penutup 1.Pengujian yang telah dilaksanakan meliputi: a. Pengujian Fungsi Insulasi: i. Pengukuran Purity ii. Pengukuran dewpoint iii. Pengukuran decomposition product iv. Pengukuran Parial Discharge b. Pengujian Switching Pengujian dengan menggunakan breaker analyser 2.Penggantian SF6 merupakan tindakan yang telah dilaksanakan untuk perbaikan kondisi insulasi 3.Hasil uji fungsi insulasi di atas, perlu dilakukan analisis lebih lanjut dengan komparasi terhadap hasil uji seperti Partial Discharge

TERIMA KASIH