BSI PD IEC TS 63042-101:2019
$167.15
UHV AC transmission systems – Voltage regulation and insulation design
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 34 |
This part of IEC 63042 specifies reactive power compensation design, voltage regulation and control, and insulation design for the coordination of UHV AC transmission systems.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 4 | CONTENTS |
| 6 | FOREWORD |
| 8 | INTRODUCTION |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Reactive power compensation for UHV AC transmission systems 4.1 General principles 4.2 Configuration of reactive power compensation – consider placing after general functions |
| 11 | 4.3 Determining reactive power compensation 4.3.1 Reactive compensation at UHV side 4.3.2 Compensation at tertiary side of UHV transformers Figures Figure 1 – Flowchart for reactive power compensation configuration |
| 12 | 4.3.3 Reactive power compensation at UHV side |
| 13 | 4.3.4 Shunt capacitor configuration at tertiary side of UHV transformers |
| 14 | 4.3.5 Shunt reactor configuration at tertiary side of UHV transformers |
| 15 | 4.4 Controllable shunt reactor at UHV side 4.4.1 General 4.4.2 Capacity selection 4.4.3 Tap-changer 4.4.4 Response speed of CSR |
| 16 | 4.4.5 Control mode 4.5 Other requirements for compensation at tertiary side of UHV transformers 4.5.1 Configuration of shunt compensator banks 4.5.2 Connection 4.5.3 Dynamic reactive compensation |
| 17 | 5 Voltage regulation 5.1 General 5.2 Voltage regulation for UHV transformers 5.2.1 Voltage regulation via transformer tap changes 5.2.2 Selection of transformer taps 5.2.3 Voltage selection for transformers 5.2.4 Types of tap-changers 5.2.5 UHV transformer tap range 5.2.6 Selection of transformer tap position during operation |
| 18 | 6 Generator reactive power control 6.1 General |
| 19 | 6.2 Coordination among reactive devices 7 Insulation design and coordination procedure for transmission line and substation design 7.1 General |
| 20 | 7.2 Insulation design procedure 7.3 UHV AC system overvoltage 7.3.1 General Figure 2 – Flow chart for rational insulation specification for UHV Figure 3 – Overvoltage categorized by time domain |
| 21 | 7.3.2 Temporary overvoltage (TOV) 7.3.3 Switching overvoltage (slow-front overvoltage) |
| 22 | 7.3.4 Lightning overvoltage (fast-front overvoltage) Figure 4 – Overvoltage mechanism caused by back-flashover and direct lightning |
| 23 | 7.3.5 Very fast front overvoltage (VFFO) 7.4 Reduction of insulation levels using overvoltage suppression measures 7.4.1 General 7.4.2 Overvoltage suppression using surge arrester with low protective level 7.4.3 Resistor-fitted circuit-breakers with closing/opening resistor |
| 24 | 7.4.4 Damping effect of resistor-fitted disconnectors employed in GIS to suppress VFFO 7.4.5 Damping effect of AIS for suppressing VFFO 7.4.6 Fast insertion of switchable or controllable shunt reactors 7.4.7 Controlled switching 7.5 Coordination of design requirements 7.5.1 General 7.5.2 Transmission line |
| 25 | 7.5.3 Substation |
| 26 | Annex A (informative)UHV multi-stage controllable shunt reactor Figure A.1 – Illustrative example of a UHV project with an MCSR |
| 27 | Table A.1 – Impact of MSCR switching on voltage at station B |
| 28 | Annex B (informative)General procedure for the selection of transformer tap positions Figure B.1 – Schematic diagram of UHV transmission line |
| 29 | Figure B.2 – Voltage profile of UHV line A-B while energized at substation |
| 30 | Table B.1 – Lower limits of operating voltage for UHV substations |
| 31 | Bibliography |
