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eLibrary > PD IEC TS 63042-102:2021 UHV AC transmission systems - General system design >

PD IEC TS 63042-102:2021 UHV AC transmission systems - General system design, 2024

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CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Objective and key issues of UHV AC transmission application [Go to Page]
4.1 Objective
4.2 Key application issues
5 Required studies on UHV AC system planning and design [Go to Page]
5.1 General
5.2 Required studies
5.3 Required analysis tools
Figures [Go to Page]
Figure 1 – Analysis tool by time domain
6 UHV AC system planning [Go to Page]
6.1 General [Go to Page]
6.1.1 Introductory remarks
6.1.2 Transmission capacity considering routes and line types to use
6.1.3 Reactive power management issues
6.1.4 Environmental issues
Figure 2 – Flowchart of reactive power compensation configuration
6.2 Scenario for system planning
6.3 Scenario for network planning procedure [Go to Page]
6.3.1 Power transmission capacity
Figure 3 – π equivalent circuit [Go to Page]
6.3.2 System voltage
6.3.3 Route selection
6.3.4 Series compensation
6.4 Required parameters
6.5 Transmission network (topology)
6.6 Reliability
7 UHV AC system design [Go to Page]
7.1 General
7.2 Reactive power management
7.3 Reclosing schemes
Figure 4 – Four-legged reactor
7.4 Delayed current zero phenomenon
Figure 5 – One typical reclosing sequence of high speed earthing switches (HSESs)
Tables [Go to Page]
Table 1 – Specification of reclosing scheme
7.5 Protection and control system
7.6 Insulation design (cost effectiveness)
Figure 6 – Procedure for insulation design
Annex A (informative)History of development of UHV AC transmission technologies [Go to Page]
A.1 General
A.2 History of development in the USA
A.3 History of development in former USSR and Russia
A.4 History of development in Italy
A.5 History of development in Japan
A.6 History of development in China
A.7 History of development in India
Annex B (informative)Experiences relating to UHV AC transmission development [Go to Page]
B.1 Project development in Italy [Go to Page]
B.1.1 Background (including network development)
B.1.2 Demand analysis and scenario of application
B.1.3 Project overview
Figure B.1 – Demand situation in Italy [Go to Page]
B.1.4 UHV system planning
Figure B.2 – UHV transmission lines in Italy as originally planned in '70 [Go to Page]
B.1.5 UHV system design
Figure B.3 – SPIRA system and SICRE system [Go to Page]
B.1.6 Laboratory and field tests
Figure B.4 – Preliminary system design
Figure B.5 – Field testing of UHV equipment
Table B.1 – Specifications of 1 100 kV transformer
Table B.2 – Specifications of pilot plant (substation)
Table B.3 – Specifications of pilot plant (cable)
B.2 Project development in China [Go to Page]
B.2.1 Background
B.2.2 Project overview
Figure B.6 – UHV AC transmission projects implemented in China [Go to Page]
B.2.3 Changzhi-Nanyang-Jingmen UHV AC extension project
Figure B.7 – Single-line diagram of Changzhi-Nanyang-Jingmen UHV AC pilot project
Table B.4 – Parameters of substation and switching station of Changzhi-Nanyang-Jingmen UHV AC pilot project
Table B.5 – Parameters of transmission lines of Changzhi-Nanyang-Jingmen UHV AC pilot project
Figure B.8 – Artificial grounding test of UHV series capacitors in China
Figure B.9 – Single-line diagram of Huainan-Zhebei-Shanghai double-circuit UHV AC project [Go to Page]
B.2.4 Overvoltage mitigation and insulation coordination
Figure B.10 – Generator integrated into a UHV system through a UHV step-up transformer
Table B.6 – Main system parameters of UHV AC projects in China [Go to Page]
B.2.5 Insulation coordination
Table B.7 – Main system parameters of UHV arrester
Table B.8 – Required minimum value of clearance of the 1 100 kV transmission line
Table B.9 – Minimum clearance of UHV substation (metres) [Go to Page]
B.2.6 Laboratory and field tests
Figure B.11 –Hubei Wuhan UHV AC test base
Figure B.12 –Hebei Bazhou UHV tower test base
Table B.10 – Overvoltage withstand level of UHV AC projects in China
B.3 Project development in India [Go to Page]
B.3.1 Background (including network development)
B.3.2 Demand analysis and scenario of application
B.3.3 Project overview
B.3.4 Development of 1 200 kV national test station in India
Figure B.13 – 1 200 kV national test station (India) [Go to Page]
B.3.5 POWERGRID's 1 200 kV transmission system
Figure B.14 – Power flow from Satna to Bina diverted via a 1 200 kV test station (India) [Go to Page]
B.3.6 UHV AC technology design – Insulation coordination
Figure B.15 – Schematic of 1 200 kV UHV AC line
Table B.11 – Basic technical parameters for 1 200 kV UHV AC system selected in India [Go to Page]
B.3.7 Insulation design for substation
Figure B.16 – Typical V-I characteristic of 1 200 kV MOSA
B.4 Project development in Japan [Go to Page]
B.4.1 Background (including network development)
Figure B.17 – Sequence of events for calculation of surge arrester energy accumulation
Table B.12 – TOV and energy absorption by surge arrester [Go to Page]
B.4.2 Demand analysis and scenario of application
B.4.3 Project overview
Figure B.18 – Trend of peak demand in Japan [Go to Page]
B.4.4 UHV system planning
B.4.5 UHV system design
Figure B.19 – UHV transmission line for each construction year in Japan
Figure B.20 – Concept for transmission capacity enhancement with short-circuit current restriction
Figure B.21 – Insulation design sequence of 1 100 kV transmission lines' air gap clearances
Figure B.22 – UHV designed transmission line in TEPCO
Table B.13 – Requirement against large charging MVA
Table B.14 – Specifications of substation insulation design [Go to Page]
B.4.6 Laboratory and field tests
Figure B.23 – Field testing of UHV substation equipment since 1996
Table B.15 – Specifications of 1 100 kV transformer
Table B.16 – Specifications of 1 100 kV GIS
Table B.17 – Example of field test – Measurement items of transformer
Table B.18 – Example of field test – Measurement items of GIS
Annex C (informative)Summary of system technologies specific to UHV AC transmission systems [Go to Page]
C.1 Technologies used in China [Go to Page]
C.1.1 Transformer
Figure C.1 – UHV AC transformer
Table C.1 – Main parameters of UHV AC typical transformer [Go to Page]
C.1.2 UHV shunt reactor and reactive compensation at tertiary side of transformer
Figure C.2 – UHV AC shunt reactor
Table C.2 – Main parameters of UHV AC reactive power compensation equipment [Go to Page]
C.1.3 Switchgear
Figure C.3 – Reactor and capacitor at tertiary side of UHV transformer
Table C.3 – Main parameters of UHV AC circuit-breaker
Figure C.4 – UHV GIS
Figure C.5 – UHV MTS [Go to Page]
C.1.4 Series capacitor (SC)
Figure C.6 – UHV air insulated disconnectors
Figure C.7 – Single-line diagram of UHV series capacitor
Figure C.8 – UHV series capacitor
Table C.4 – Rated values of UHV SCs in Changzhi-Nanyang-Jingmen UHV extension project [Go to Page]
C.1.5 Gas-insulated transmission line (GIL)
Figure C.9 – UHV GIL tunnel below Yangtze River
Figure C.10 – Inside a UHV GIL tunnel during assembly
C.2 Technologies used in India [Go to Page]
C.2.1 UHV AC transformer
Table C.5 – Specifications of 333 MVA transformer for the 1 200 kV test station [Go to Page]
C.2.2 Surge arrester
Figure C.11 – 333 MVA transformer for the 1 200 kV test station
Table C.6 – Technical specifications of surge arrester [Go to Page]
C.2.3 Circuit-breakers
Figure C.12 – First prototype of 850 kV surge arrester for 1 200 kV system
Table C.7 – Technical parameters of UHV circuit-breaker [Go to Page]
C.2.4 Instrument transformers
Figure C.13 – UHV circuit-breaker in India
Table C.8 – Parameters of instrument transformer
C.3 Technologies used in Japan [Go to Page]
C.3.1 Switch gear
Figure C.14 – Instrument transformer [Go to Page]
C.3.2 Surge arrester
Figure C.15 – 1 100 kV gas circuit-breaker
Figure C.16 – Resistor-assisted disconnecting operation
Table C.9 – Specification of gas circuit-breaker
Figure C.17 – Surge arrester with low protection level
Table C.10 – Specifications of surge arrester
Bibliography [Go to Page]

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