Page 404 - Practical Power System and Protective Relays Commissioning

392 Index

Power transformers, 49, 50f Programming relays, 189
commissioning, 59 67 Protection
electrical tests, 25 current transformer accuracy classes,
electrical tests, 25 109 110
surge arrestor test, 25 IED, 198 199, 199f
tests, 67 68 scheme function test, 326
visual check, 24 zones, 192, 193f
construction, 49 50 Protection relays. See also Directional relays;
cooling system, 50 51 Distance relays
installation backup protections, 266 269
site inspections, 58 classification of relays, 189 190
transformer storage, 58 design of protective relaying systems,
transportation, 58 190 193
sequence networks, 166 170 distance protection, 210 236
testing, 59 67, 361 363 generator protections, 236 249
capacitance and Tan δ measurement, history of relays, 194 201
64 66 motor protection, 250 251
determination of transformer vector overcurrent relays, 201 209
group test, 60 61 settings, 281
frequency response analysis, 66 busbar protection settings, 313 320
load loss measurement, 62 63 differential protection setting, 294 306
no-load current and no-load circuit losses distance protection, 289 294
test measurement, 62 feeder backup overcurrent protections,
partial discharge measurement, 66 67 285 287
temperature rise test, 64 feeder unit differential protection,
transformer oil breakdown test, 64 287 288
voltage ratio test measurement, 60 generator protection setting, 306 313
winding insulation resistance motor protection setting, 320 323
measurement, 59 60 overcurrent protection settings, 281 284
winding resistance test, 61 62 switchgear protection, 254f
theory and circuit analysis, 51 58 transformer protection, 269 279
Precommissioning procedures, 23 unit protections, 260 265
Prefault duration time, 141 Protection SLD (PSLD), 9, 11f, 192
Pressure Protective relays, 2, 189
checks, 91, 92f systems
relief valve, 49 design criteria, 191 192
Prestart commissioning tests steps and information to design
of induction motors, 46 47 protection system, 192 193
of synchronous generators, 43 44 zones of protection, 192
Primary energy, 32 testing and commissioning, 325
Primary injection test busbar protection, 350 355
busbar protection, 351 355 commissioning tests of protective relays,
transformer differential protection, 325 326
347 349, 348f distance protection, 332 338
Primary injection test of substation, 365 366 line differential protection, 339 343
energization of substation test, 366 368 out-of-step relay, 359 360
substation A, 365f overcurrent relay, 327 331
Primary injection tests, 326 synchronizing relay testing, 355 358
Primary relay, v, 266 transformer protection, 344 349
Primary voltage, 54 55 PSLD. See Protection SLD (PSLD)
Primary winding measures, 105 PSM. See Plug setting multiplier (PSM)
Process level substation, 181 PT. See Polarity test (PT)