SPAA 341 C Feeder protection relay

Transcription

1 SPAA 341 C Feeder protection relay

2 Feeder Protection Relay Type SPAA 341 C General Features Comprehensive numerical feeder protection relay consisting of two multifunction protection relay modules and a flexible autoreclose relay module Overall scheme comprising time overcurrent protection, shortcircuit protection, phase discontinuity protection, nondirectional and directional earthfault protection, general earthfault supervision, autoreclose facilities, circuitbreaker failure protection and circuitbreaker condition monitoring 1 A and 5 A tappings on the energizing current inputs of the overcurrent and nondirectional earthfault protection and 0.2 A and 1 A tappings on the energizing inputs of the directional earthfault protection Selectable rated energizing input voltages of the directional earthfault protection: 100 V, 110 V or 120 V Four heavyduty relays for CB tripping and five weak current relays for signalling purposes Doublepole or singlepole circuitbreaker control Five configurable control inputs for the external control of the protection stages and the autoreclose module Remote control of circuitbreaker via autoreclose module Local manmachine communication via pushbuttons and a digital display on the front panels of the protection relay modules Serial interface for connecting the relay to higherlevel data acquisition systems, local or remote control systems or other host systems Local fault indication by means of LED indicators with memory functions and the digital display High immunity to electrical and electromagnetic interference Continuous selfsupervision of relay hardware and software for enhanced system reliability and availability Autodiagnostic fault indication to facilitate fault location and repair after detection of an internal relay fault Powerful software support for parametrization of the relay, for reading measured and recorded values, events, etc., and for storing readings CE marking according to the EC directive for EMC Member of the SPACOM product family and PYRAMID, ABB s coordinated protection and control concept.

3 Application The feeder protection relay SPAA 341 C is designed to be used for the protection of radial isolated neutral networks or networks earthed via a resistor or via an arc suppression coil with or without a parallel resistor. The feeder protection relay features time overcurrent protection, shortcircuit protection and phase discontinuity protection. Further, a wide choice of earthfault protection functions is available, including directional and nondirectional earthfault and residual overvoltage. The feeder protection relay also includes a flexible multishot autoreclose module for threephase autoreclosing of circuit breakers. The system reliability and availability is enhanced by a builtin circuit breaker failure protection function, a circuitbreaker condition monitor and a sophisticated hardware and software selfsupervision system. The feeder protection relay is provided with serial communication capabilities. Vital relay information is immediately available to the relay operator, locally or remotely. Therefore, the feeder protection relays can be used for any application ranging from standalone relays to advanced, fully remotecontrolled substations. Mechanical design The feeder protection relay is housed in a rigid size 300 aluminium case to IP54. The basic case design is intended for flush mounting. The case dimensions and the mounting accessories are shown on the back page. The colour of the mounting case is beige. All input and output terminals including the serial communication port are located on the rear panel. When the mounting depth is limited the flush mounting relay case can be provided with a 40 mm, 80 mm or 120 mm raising frame which reduces the depth behind the panel correspondingly. These semiflush mounted relay cases are also rear connected. The feeder protection relay is also available in a relay case for projecting mounting. Then all input and output terminals are located on the front side of the relay case. For dimensional drawings see page 11. The fully equipped feeder protection relay comprises of five modules: a connection module, an I/O module, a combined overcurrent and earthfault relay module, a directional earthfault relay module and an autoreclose relay module. The relay modules are multifunctional microprocessorbased plugin units. The feeder protection relay is available in several versions, ranging from the fully equipped feeder protection relay to versions omitting one or two modules. The relay modules are provided with local manmachine communication interfaces.

4 Module Characteristics Combined Overcurrent and Earthfault Relay Module SPCJ 4D28 I L1 I L2 I L3 I o IRF / I > I n t > [ s] k / I >> I n t >> [ s] I > >>/I n t > >> [ s] I 0 > / SGF SGB I n 3 I > I RESET STEP t 0 > [ s ] k 0 I >>/ 0 I t 0 >> [ s ]n ] I > [%] t > [ s] PROGRAM Threephase lowset overcurrent stage with definite time or inverse time characteristic for time overcurrent protection Threephase highset overcurrent stage and threephase superhighset stage with instantaneous function or definite time characteristic for shortcircuit protection Nondirectional lowset residual overcurrent stage with definite time or inverse time characteristic for earthfault protection Nondirectional highset residual overcurrent stage with definite time characteristic for earthfault protection Sensitive phase unbalance stage for detection of phase discontinuity Integrated circuitbreaker failure protection for enhanced substation operational reliability Local manmachine communication interface SGR TRIP 1719 SPCJ 4D28 Directional and Nondirectional Earthfault Relay Module SPCS 2D26 Uo I o SGF SGB ϕ U 0b > [ % ] t b > [ s ] I 01 > [%] U 01 > [%] t 1 > [ s ] I 02 > [%] U 02 > [%] t 2 > [ s ] U o I IRF RESET STEP PROGRAM Directional or nondirectional lowset residual overcurrent stage with definite time characteristic for directional earthfault protection Directional or nondirectional highset residual overcurrent stage with definite time characteristic for earthfault protection Sensitive threestage residual overvoltage protection with definite time characteristic for general earthfault supervision Integrated circuitbreaker failure protection for enhanced substation operational reliability Four selectable basic angles for the direction measuring circuit Local manmachine communication interface SGR TRIP 1721 SPCS 2D26

5 Autoreclose Module SPCT 5D54 AR1 AR2 AR3 AR4 IRF Shot 1 Shot 2 Shot 3 Shot 4 Shot 5 Final trip t r O I RESET STEP Five programmable autoreclose shots Three internal autoreclose initiation signal lines from the overcurrent and earthfault stages One external autoreclose initiation signal line Autoreclose functions initiated either by the start signal or the trip signal of a relay module In the former case the autoreclose module provides the trip signal after a programmable time delay Counters recording the number of shots initiated via separate AR lines Circuitbreaker condition monitor indicating when CB maintenance is needed Local manmachine communication interface t d SGF PROGRAM SGB SGR DEF TRIP 1722 SPCT 5D54

6 I Connection Diagram SPAA 341 C CB POS AR INH AR START AR SYNC C INH RRES CBCS I/O BS2 BS1 0 I U3 (SPCT 5D54) IRF SS1 TS1 SS2 TS2 SS3 TS3 SS4 I/O RRES BS2 BS1 U 0 I U2 (SPCS 2D26) I/O IRF SS1 TS1 SS2 TS2 SS3 TS3 SS4 RRES BS2 I> SS3 TS3 SS4 BS1 3I> I U1 (SPCJ 4D28) IRF SS1 TS1 SS2 TS2 U 12 U 23 I L1 I L2 I L3 I OB U o I O U5 U4 100 V 100 V 5 A 1 A 5 A 1 A 5 A 1 A 5 A 1 A 100/ 110/ 120 V 1 A 0.2 A ~ X X X X2 AR AR CB CTRL INH POS BS 2 BS 1 (~) P2 U aux (~) S2 S1 P1 da dn N A L1 L2 L X X2 3 4 X X2 1 2 X2 7 8 X X2 5 6 X IRF SS1 TS1 SS2 TS2 SS3 TS3 SS4 CBCS SPAZC_ I 0 0 Fig. 1. Simplified block diagram and connection diagram for the feeder protection relay SPAA 341 C SERIAL PORT (SPA) Rx Tx

7 Autoreclosure The shot pointer indicates the shot to start when the autoreclose module receives its AR initiation signal through one of the initiation lines AR1...AR4. The boxes beneath the initiation lines AR1...AR4 determine the action to be taken when an autoreclose initiation signal is received. Start means that an autoreclose shot is initiated, block means that the autoreclose shot is prevented from starting and a dash means that no action will be taken. The programmable start delay associated with the boxes in the shaded area in Fig. 2 is activated, if the autoreclose shot is initiated by the start signal of a protection stage. After the start delay the circuit breaker is opened by the autoreclose module. When the dead time has elapsed, the circuit breaker is closed and the discrimination time starts running, if employed. A new initiation signal received during the discrimination time will inhibit the whole AR sequence. An autoreclose request during the reclaim time will move the shot pointer and check whether a function has been selected or not. If not, the shot pointer moves down to the bottom horizontal line and a definite tripping will occur. At this point the AR module is blocked during the reclaim time, after which the shot pointer is reset and the module is prepared for a new AR sequence. Shot pointer Initiation signal AR1 Initiation signal AR2 Initiation signal AR3 External init. signal AR4 Circuit breaker closing Shot 1 (1) Start Start Start Start Dead time 1 td1 Shot 2 (2) Block Start Start Dead time 2 td2 Shot 3 (3) Dead time 3 td3 Shot 4 (4) Dead time 4 td4 Shot 5 (5) Dead time 5 Final Trip (6) Yes Yes No Yes Final trip function Lockout (7) Reclaim time Shot pointer = Shot 1 Ready to respond to new fault incidents Fig. 2. Simpified diagram of the AR functions of the autoreclose relay module Serial Communication The feeder protection relay is equipped with a serial communication port on the rear panel. The serial port is used for connecting the relay to the SPA bus via an optional bus connection module. Two bus connection module types are available: SPAZC17 and SPAZC21. The first one can be powered from the host relay and from a separate power source at the same time, while the other type is powered from the host relay via the D type connector. Output Relays and CB Control The feeder protection relay is provided with nine output auxiliary relays, four of which are heavyduty output relays for the direct control of the circuit breaker. Singlepole or doublepole circuit breaker control can be used. One of the five signalling relays is permanently allocated for the selfsupervision system. The functions of the other four can be defined by the user. Auxiliary Power Supply The auxiliary supply of the feeder protection relay is obtained via an internal plugin type power module. Two auxiliary power module types are available: type SPGU 240A1 for ac or dc supply within the operative voltage range V and type SPGU 48B2 for dc supply within the operative voltage range V. The power module forms the internal voltages required by the protection relay modules and the I/O module. The operation of the power module is continuously supervised.

8 Technical Data Energizing inputs Current inputs Rated current I n 0.2 A 1 A 5 A Terminal numbers X0/13 X0/12 X0/46 X0/45 X0/79 X0/78 X0/3739 X0/3738 X0/2527 X0/2526 Thermal current withstand continuously 1.5 A 4 A 20 A for 10 s 5 A 25 A 100 A for 1 s 20 A 100 A 500 A Dynamic current withstand halfwave value 50 A 250 A 1250 A Input impedance <750 mω <100 mω <20 mω Voltage inputs Rated voltage U n 100 V, 110 V or 120 V Terminal numbers X0/2829 Continuous voltage withstand 200 V Rated burden of voltage input at U n <0.5 VA Rated frequency f n, acc. to order 50 Hz or 60 Hz Output contacts Trip contacts Terminal numbers X1/1516, X2/12, 34 Rated voltage 250 V ac/dc Continuous current carrying capacity 5 A Make and carry for 0.5 s 30 A Make and carry for 3 s 15 A Breaking capacity for dc when the control circuit time constant L/R at the control voltage levels 48 V dc 5 A 110 V dc 3 A 220 V dc 1 A Contact material AgCdO 2 Signalling contacts Terminal numbers X2/56, 78, X2/1213, Rated voltage 250 V ac/dc Continuous current carrying capacity 5 A Make and carry for 0.5 s 10 A Make and carry for 3 s 8 A Breaking capacity for dc when the control circuit time constant L/R at the control voltage levels 48 V dc 1 A 110 V dc 0.25 A 220 V dc 0.15 A Contact material AgCdO 2 External control inputs Blocking inputs terminal numbers X1/12, 34 CB position message input terminal numbers X1/56 Autoreclose feedback inputs terminal numbers X1/78, 910 Control voltage Operative voltage range Current drain of activated control input V dc or V ac ma Auxiliary power supply Terminal numbers X0/6162 Power module type SPGU 240A1 rated voltages U n = 110/120/230/ 240 V ac U n = 110/125/220 V dc operative voltage range V ac/dc Power module type SPGU 48B2 rated voltages U n = 24/48/60 V dc operative voltage range V dc Power consumption, relay under quiescent/operation conditions ~10 W/~15 W Data communication Transmission mode Fibreoptic serial bus Coding ASCII Data transfer rate, selectable 4800 or 9600 Bd Electrical/optical bus connection module powered from the host relay for plastic core cables SPAZC 21BB for glass fibre cables SPAZC 21MM Electrical/optical bus connection module powered from the host relay or from an external power source for plastic core cables SPAZC 17BB for glass fibre cables SPAZC 17MM Test voltages Dielectric test voltage according to IEC 2555 Impulse test voltage according to IEC 2555 Insulation resistance according to IEC kv, 50 Hz, 1 min 5 kv, 1.2/50 µs, 0.5 J >100 MΩ, 500 V dc Disturbance tests Highfrequency (1MHz) disturbance test according to IEC , class III common mode 2.5 kv differential mode 1.0 kv Fast transients according to IEC , class III and IEC 8014, level 4 power supply inputs 4 kv, 5/50 ns other inputs 2 kv, 5/50 ns Electrostatic discharge test according to IEC and IEC 8012, class III air discharge 8 kv contact discharge 6 kv Environmental conditions Service temperature range Transport and storage temperature range according to IEC 6828 Temperature influence Damp heat test, cyclic (12 h 12 h) according to IEC C C 0.2%/ C Degree of protection by enclosure of flush mounting relay case IP 54 Weight of fully equipped relay including flush mounting relay case 25 C/55 C RH = 93%, 6 cycles ~6 kg

9 RELAY MODULE DATA Overcurrent and earthfault relay module SPCJ 4D28 Lowset overcurrent stage I> Start current I> definite time characteristic x I n inverse time characteristic x I n * 70 ms Operation characteristic definite time characteristic operate time s inverse time characteristic acc. to BS 142 and IEC 2554 special characteristic acc. to ABB practice Extremely inverse Very inverse Normal inverse Longtime inverse RItype inverse RXIDGtype inverse time multiplier k Retardation time <30 ms Dropoff/pickup ratio, typ at definite time operation characteristic class E at inverse time characteristic 5 ±3% of set current Highset overcurrent stage I>> Start current I>> x I n or, infinite Operate time s Retardation time <30 ms Dropoff/pickup ratio, typ ±3% of set current Superhighset overcurrent stage I>>> Start current I>>> x I n or, infinite Operate time s Retardation time <30 ms Dropoff/pickup ratio, typ ±3% of set current Lowset earthfault stage I 0 > Start current I 0 > x I n 70 ms Operation characteristic definite time characteristic operate time s inverse time characteristic acc. to BS 142 and IEC 2554 special characteristic acc. to ABB practice Extremely inverse Very inverse Normal inverse Longtime inverse RItype inverse RXIDGtype inverse time multiplier k Retardation time <30 ms Dropoff/pickup ratio, typ at definite time operation characteristic class E at inverse time characteristic 5 ±3% of set current Highset earthfault stage I 0 >> Start current I 0 >> x I n or, infinite 50 ms Operate time s Dropoff/pickup ratio, typ ±3% of set current Phase discontinuity protection stage I> Start current I> % x I n or, infinite 150 ms Operate time s 80 ms Dropoff/pickup ratio, typ ±2% of set value ±1 unit ±3% of set current * At inverse time characteristic the effective setting range is x I n, although setting values greater than 2.5 x I n can be set on the relay.

10 Directional earthfault relay module SPCS 2D26 Residual voltage stage U 0b > Start voltage U 0b > % of U n 60 ms Operate time t b > s 60 ms Dropoff/pickup ratio, typ ±3% of set voltage Lowset stage I 01 > or U 01 > Operation direction of stage I 01 > forward or reverse Basic angle ϕ b, selectable 90, 60, 30 or 0 Operation sector ϕ ±80 or ±88 Mode of operation of stage I 01 > directional or nondirectional Start current I 01 > % of I n Start voltage U 01 > % of U n 80 ms Operate time t 1 > s 70 ms Dropoff/pickup ratio, typ ±3% of set value x I n Autoreclose relay module SPCT 5D54 Number of autoreclose shots 1 5 AR start delay time s Dead time s Discriminating time s Reclaim time s Final trip time s Length of CB close pulse s Length of CB open pulse s ±1% of set value or ±30 ms Highset stage I 02 > or U 02 > Operation direction of stage I 02 > forward or reverse Basic angle ϕ b, selectable 90, 60, 30 or 0 Operation sector ϕ ±80 or ±88 Mode of operation of stage I 02 > directional or nondirectional Start current I 02 > % of I n or, infinite Start voltage U 02 > % of U n or, infinite 80 ms Operate time t 2 > s 70 ms Dropoff/pickup ratio, typ ±3% of set value x I n

11 Mounting and Dimensions Flush mounting relay case (dimensions in millimetres) ± ±1 Panel cutout Semiflush mounting a b Raising frame SPAZX 301 SPAZX 302 SPAZX 303 a b Mounting in 19 inch cabinets and frames An ancillary mounting plate, height 4U (~177 mm), is recommended to be used when the protection relays are to be mounted in 19 inch frames or cabinets. The ancillary mounting plate type SPAZX 304 accommodates two size 300 relays and type SPAZX 305 one size 300 relay. Projecting mounting When projecting mounting is preferred a relay case type SPAZX 317 is used. The relay case for projecting mounting is provided with front connectors. 0,4 482,6 0 (19") ø6 21,5 101,6 7 0, (4U) SPAZX 304 0,4 482,6 0 (19") 21,5 101,6 7 0, (4U) SPAZX 305

12 ABB Substation Automation Oy P.O.Box 699 FIN65101 VAASAFinland Tel Fax MRS750003MDS EN