GE BUS1000 Manual de usuario

GE Power Management

BUS1000

Instructions

InstructionsInstructions

Instructions

GEK 98514B

GEK 98514BGEK 98514B

GEK 98514B

Bus Bar Protection

Bus Bar ProtectionBus Bar Protection

Bus Bar Protection

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TABLE OF CONTENTS

GEK-98514B BUS1000 Busbar Protection i

TABLE OF CONTENTS

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

1. DESCRIPTION 1-1

2. TECHNICAL SPECIFICATIONS 2-1

2.1. MODEL LIST 2-1

2.2. MECHANICAL 2-2

2.3. ELECTRICAL 2-2

2.4. ELECTROMAGNETIC COMPATIBILITY STANDARDS 2-4

3. OPERATION PRINCIPLES 3-1

3.1. BASIC PRINCIPLE 3-1

3.2. DIFFERENTIAL UNIT 3-2

3.2.1. BEHAVIOR WITH INTERNAL FAULTS 3-2

3.2.2. BEHAVIOR WITH EXTERNAL FAULTS 3-4

3.3. SENSITIVITY EQUATION OF THE PERCENT RESTRAINT UNIT 3-5

3.4. DIFFERENTIAL SUPERVISION UNIT 3-6

3.5. ALARM UNIT 3-6

3.6. LINE OVERCURRENT AND BREAKER FAILURE SUPERVISION UNITS 3-6

3.7. TEST BOX 3-7

3.7.1. DESCRIPTION 3-7

3.7.2. OPERATION 3-8

3.7.3. DIFFERENTIAL UNITS TEST:3-8

3.7.4. ALARM UNIT TEST:3-8

4. APPLICATION 4-1

4.1. SELECTION GUIDE 4-2

4.2. CALCULATION OF SETTINGS 4-2

4.2.1. MAIN CURRENT TRANSFORMERS 4-2

4.2.2. INTERMEDIATE AUXILIARY CURRENT TRANSFORMERS 4-2

4.2.3. MEASUREMENT OF KRESTRAINT PERCENTAGE 4-3

4.2.4. MEASUREMENT OF RMAX 4-3

4.2.5. ADJUSTMENT OF THE SUPERVISION DIFFERENTIAL UNIT 4-4

5. HARDWARE DESCRIPTION 5-1

5.1. CABINETS 5-1

5.2. PANEL MOUNTED RACKS 5-2

5.3. MODULES 5-5

5.3.1. PRINTED CIRCUIT BOARDS 5-5

5.3.2. OUTPUT MODULES 5-5

5.3.3. NON-REMOVABLE MODULES 5-6

5.3.4. LATCHING AND AUXILIARY RELAYS 5-6

5.3.5. FRONT SIDE DEVICES 5-6

5.3.6. INTERNAL ADJUSTMENTS 5-8

5.3.7. FACTORY ADJUSTMENTS 5-8

5.3.8. A

CCESSORIES

5-9

TABLE OF CONTENTS

ii BUS1000 Busbar Protection GEK-98514B

6. RECEIVING, HANDLING AND STORAGE 6-1

6.1. ACCEPTANCE TESTS AND EQUIPMENT CALIBRATION 6-1

7. ACCEPTANCE TESTS 7-1

7.1. VISUAL INSPECTION 7-1

7.2. ELECTRIC TEST 7-1

7.3. STABILIZATION RESISTORS TEST 7-1

7.4. AUXILIARY CURRENT TRANSFORMERS TEST 7-1

7.5. PREVIOUS CHECK 7-2

7.6. DIFFERENTIAL UNIT CHECK 7-2

7.6.1. BUS A7-2

7.6.2. BUS B7-4

7.7. DIFFERENTIAL TRIPPING OUTPUT CONTACTS TEST 7-6

7.8. BREAKER FAILURE AND 50 UNITS TEST 7-7

7.9. COUPLING DEVICE TEST 7-8

7.9.1. BUS A7-8

7.9.2. BUS B7-8

7.10. SWITCHING DEVICE TEST 7-9

7.11. TEST ELEMENT TEST 7-10

7.11.1. ACANDSWITCHES CIRCUIT 7-10

7.11.2. ONANDOFF PUSH-BUTTONS CHECK 7-10

7.11.3. TEST MEMORY CHECK 7-10

7.12. UNITS CALIBRATION 7-11

7.12.1. MAIN UNITS 7-11

7.12.2. SUPERVISION UNITS 7-11

7.12.3. ALARM UNIT CALIBRATION 7-12

7.12.4. OVERCURRENT UNITS AND BREAKER FAILURE CALIBRATION 7-12

8. FINAL INSTALLATION & COMMISSIONING 8-1

8.1. SETPOINTS OF THE DIFFERENTIAL PROTECTION.8-1

8.2. SETPOINTS OF THE BREAKER FAILURE 8-1

8.3. INSTALLATION 8-1

8.4. PREVIOUS CHECK 8-1

8.5. ARRANGEMENT AND PRELIMINARY LEADS 8-2

8.6. TESTS WITHOUT LOAD 8-2

8.7. TESTS WITH LOAD 8-2

8.8. OPERATION CRITERIA 8-3

9. TESTS AND PERIODICAL MAINTENANCE 9-1

10. FIGURES 10-1

11. DIMENSIONS 11-1

12. SCHEMATICS DOUBLE BUSBAR 13-15

TABLE OF CONTENTS

GEK-98514B BUS1000 Busbar Protection iii

13. SCHEMATICS SINGLE BUSBAR ¡ERROR!MARCADOR NO DEFINIDO.

1. DESCRIPTION

GEK-98514B BUS1000 Busbar Protection 1-1

1.1.

1. DESCRIPTION

DESCRIPTIONDESCRIPTION

DESCRIPTION

The BUS1000 is a high-speed static protection system aimed at detecting phase to phase and to ground

faults in buses at high voltage substations.

The main unit is an overcurrent three phase differential relay with percentage restraint and stabilization

resistors.

The relay is provided with a very sensible overcurrent differential unit which provides an alarm and blocks

the output of any protection trip in case of an accidental disconnection of any of the measuring units’ inputs

during the normal operation of the substation.

As an option, the protection system may include a detection device for breaker failures, associated to the

differential protection and overcurrent units for individual supervision of tripping from each breaker.

The modular feature of the system allows to carry out various configurations adapted to the specific

characteristics of the buses to be protected (multiple or single-bus, breaker and one half, special

dispositions, etc.)

Depending on the complexity of the application, the protection system is housed in one or more 19

inches standard racks or, as an option, in complete cabinets.

The outstanding features of the BUS1000 system are:

•Does not need dedicated secondary

•Signalling and tripping contacts independent of location.

•Redundant measuring circuits for self-checking.

•Measuring "units" for line currents and operation and restraint magnitudes in order to ease the set up and

maintenance.

•An optional testing system to check the operation of the alarm and measuring units in normal operation

conditions.

•Optional overcurrent units for the supervision of the breaker tripping in every position.

•An optional breaker failure detection device. (Several steps logic available)

•Optional lockout relays (86)

The information given hereafter does not intend to cover all the different details or variations of

the described equipment neither does it intend to foresee any event that may arise during its set up,

operation or maintenance.

Should any further information be requested, or in the event of a specific problem that may need

any information other than that provided, refer to GE POWER MANAGEMENT, S.A.

2. TECHNICAL SPECIFICATIONS

GEK-98514B BUS1000 Busbar Protection 2-1

2.2.

2. TECHNICAL SPECIFICATIONS

TECHNICAL SPECIFICATIONSTECHNICAL SPECIFICATIONS

TECHNICAL SPECIFICATIONS

2.1. MODEL LIST

BUS 1 - - - - - - - - - - DESCRIPTION

1 Single busbar

2 Double busbar

3 Split busbar

4 Triple busbar

- - Specify the number of lines + bus coupler

A Without cabinet

D In cabinet (2000mmx800mmx800mm)

1 Without breaker failure

2 With breaker failure

2 With test rack & short-cicuitable resistors

3 Without test rack & short cicuitable

150Hz

260Hz

C Auxiliar

volta

e: 125 Vcc.

D Auxiliary voltage: 250 Vcc.

E Auxiliary voltage: 220 Vcc.

F Auxiliary voltage: 110 Vcc.

- - Correlative numbers

Because of the great variety of options and configurations in the BUS1000 systems, a complete list of the

models is not included in this document. The specific information corresponding to the customer's model is

provided with the chosen equipment. The most usual types of models as well as the basic system

components are described below:

•SINGLE-BUS SYSTEMS

•DOUBLE BUS WITH COUPLING SYSTEMS

•SPLIT BUS SYSTEMS

•BREAKER AND A HALF SYSTEMS

•DOUBLE BREAKER SYSTEMS

•MAIN BUS SYSTEMS WITH TRANSFERENCE BUS

•SYSTEMS FOR SPECIAL CONFIGURATIONS

2. TECHNICAL SPECIFICATIONS

2-2 BUS1000 Busbar Protection GEK-98514B

Each of the systems may include the following functions:

Basic model....... DIFFERENTIAL PROTECTION

Option 1............. OVERCURRENT TRIPPING SUPERVISION

Option 2............. BREAKER FAILURE (Several steps logic available upon request)

Option 3............. TEST UNIT

System packaging options:

A ........................ Board mounted standard racks

D........................ Complete cabinets

2.2. MECHANICAL

•Mechanical packing in a 19” inch 4 units high stainless steel box.

•IP51 Grade Protection (IP55 housed in a cabinet).

•Rear connection by means of 16 strips of 8 terminals or 16 strips of 12 terminals. Stair layout of

the terminal blocks if mounted in a cabinet.

•Dimensions:

Rack: 484 mm x 179 mm x 349 mm.

Cabinet: 800 mm x 800 mm x 2000 mm (Pedestal: 750x800x100 mm).

•Ambient humidity: up to 95 without condensing.

•Temperature:

Operation: -20º to + 55º C

Storage: -40º to + 65º C

2.3. ELECTRICAL

•Frequency: 50/60Hz

•Auxiliary voltage: 110 Vdc or 125 Vdc or 220 Vdc

•Operation ranges: 80%to 120% of nominal values

•Nominal current:1amp

•Thermal capacity current circuits:

Input circuits:

Continuously................................................... 2 x In

For three seconds ........................................ 50 x In

For one second ...........................................100 x In

Total current going through the bar:

Continuously..................................................20 x In

•Thermal capacity for voltage circuits:

Continuous: ..................................................... 2.5x Vn

During 1min:...................................................... 3.5xVn

•Loads:

Current: 15VA (depending on the tap of the auxiliary transformer used)

Voltage: 0.2 VA at Vn= 63 V

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