7TH CONFERENCE ON ADVANCES & INNOVATIONS IN …
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7TH CONFERENCE ON ADVANCES & INNOVATIONS IN SUBSTATIONS 25-26 JULY 2019 CBIP DELHI
ADVANCES AND INNOVATIONS IN SUBSTATIONS
Digital GIS Substation and Eco-efficient GIS
ANURAG PANDIT and DHRUVI SHUKLA
July 26, 2019 Slide 2
Agenda
Introduction and
Overview Digital substation Digital GIS Substation
Conclusion Eco-efficient GIS Questions /Answers
Myself, Anurag Pandit, Post graduated in High Voltage Engineering from Govt Engineering College Jabalpur, Joined ABB India Limited in 2008, currently working as Head of Engineering for GIS PASS unit.
I have around 13+ years of relevant experience in HV switchgear industry.
Presented and published several technical papers on various topics including HV GIS, Hybrid Switchgears.
My areas of interest includes hybrid and gas insulated switchgear technology, Life cycle cost assessment, renewable energy,EHV systems, lean manufacturing and Lean Engineering.
Email : [email protected]
LinkedIn : linkedin.com/in/anurag-pandit-4a219213
Anurag Pandit
Presenter Profile
July 26, 2019 Slide 3
Dhruvi Shukla, graduated from SVIT, Vasad, presently working with GIS PASS Unit, ABB India Limited, Savli, Vadodara as Engineering Manager.
She has approximately 5 years of experience in Project Engineering of AIS, Hybrid and Gas Insulated Switchgears.
Her areas of interest include hybrid and gas insulated switchgear technology, Substation Engineering, New Technologies.
Email : [email protected]
LinkedIn : https://www.linkedin.com/in/dhruvi-shukla-2b7419124/
Dhruvi Shukla
Presenter Profile
July 26, 2019 Slide 4
Introduction and Overview
July 26, 2019 Slide 5
• Increasing demand on refurbishment of substations
• Project execution under increasing cost and time pressure
• Better utilization of existing assets
• Extraction of real time data.
• Minimum availability of space
• Safeguard investment over the entire life cycle
• Environment Friendly
• Safety
• Aesthetics
Challenges faced by today’s substation
Introduction and Overview
July 26, 2019 Slide 6
An answer to today’s substation challenges – Gas Insulated Switchgear (GIS)
1 Compact and modular with proven reliability
2 Low space requirement
3 Low environmental impact and lifecycle costs
4 No environmental constrains
5 Reduced installation and commissioning time
6 High quality standards and safety
7 Substation security and aesthetics
8 Advanced features for digital substation
Digital Substation
July 26, 2019 Slide 7
• The Digital Substation is a term applied to electrical substations where operation is managed between distributed intelligent electronic devices (IEDs) interconnected by communications networks.
• Digital substations remove the last electrical connection between the high voltage equipment and the protection and control panels, creating a safer work environment, while reducing the costs for building, land, engineering, commissioning, operation and maintenance of the system.
Powerful Combination-Bridging the gap between analogue and digital
Digital Substation
July 26, 2019 Slide 8
Digital Interfaces
Digital Substation
July 26, 2019 Slide 9
• Up to 80% copper cable reduction*
Unseen opportunities for modern utilities
• Up to 40% shorter installation phase**
• Up to 60% less space in the relay house* • Operational cost reduction***
—
* Based on a typical
conventional 400kV
double busbar AIS
substation compared
to a modern variant
using SAM600 process
bus I/O system and
FOCS integrated
in disconnecting
circuit breakers.
—
** Of new secondary
systems.
—
*** During secondary
system retrofits.
Digital GIS Substation
July 26, 2019 LCC = Local Control Cubicle IED = Intelligent Electronic Device Slide 10
1. Substation automation protection and control system with IEC61850-8-1 station bus and connected communication system
5. Stand-alone merging units, bridging the gap between analog and digital world. Compliant to IEC 61850-9-2
2. Fully digital LCC with IEDs for control and protection plus monitoring functions
3. IEC 61850-9-2 process bus, connecting the switchgear components to the protection and control system
4. Non-conventional instrument transformers reduce substation wiring complexity, increase safety and provide late customization
GIS portfolio for digital substation
Digital GIS Substation
July 26, 2019
CT = current transformer VT = voltage transformer NCIT = Non-conventional instrument transformer
Slide 11
Past Present From conventional CT, VT to NCITs
Evolution of conventional VTs and CTs
Sensors for current and voltage
New applications like combined current and voltage NCITs for
metering and protection
Standardized integration of protection, control and metering
with IEC 61850
Evolution of Instrument Transformers
Evolution of Local Control Cubicles (LCC)
Digital GIS Substation
July 26, 2019 Slide 12
• The key element for the GIS is a fully digital local control cubicle (LCC) with intelligent electronic devices (IED) like binary control units or protection units plus monitoring devices.
• All IEDs are connected to the substation automation bus.
• All main functions are integrated into the IED via configuration of the software.
• So, the main difference between conventional and digital LCC is that the interlocking and mimic is a complex electrical circuit for former while in latter these all are implemented into the binary control unit using a configuration. Integrated LCC with
control and monitoring
Intelligent Electronic Devices (IEDs)
Digital GIS Substation
July 26, 2019 IED = Intelligent Electronic Device Slide 13
– Control and protection IEDs in integrated and fully digital local control cubicles
– IEDs with digital interfaces for IEC61850-8-1 and -9-2
• Relion series for control and protection
• Busbar protection REB 500
• Point-on-wave switching Switchsync PWC600
– Preconfigured and tool- based configuration with
• IET600 (integrated engineering tool for IEC 61850 systems)
• ITT600 (integrated testing tool for IEC 61850 systems)
• PCM600 (protection and control IED manager)
Monitoring Devices
Digital GIS Substation
July 26, 2019 * a product of Power Diagnostix Slide 14
Sensible set of monitoring functions with
– MSM for SF6 monitoring
– CBS for circuit-breaker monitoring
– GIS monitor for partial discharge monitoring*
Monitoring overview
Digital GIS Substation
July 26, 2019 Slide 15
Function Condition Process Data Applies to
Operation counter Lifetime/Maintenance scheduling Operation counter, Time since last maintenance
All switching devices
Operating mechanism condition Mechanical failures or malfunction Moving and reaction time All switching devices
Contact wear estimation Contact wear caused by fault clearing Fault current, arcing time Circuit breaker
Pump condition Leakages, Pump motor failures Pump starts, oil fill level Circuit breaker operating mechanism
Gas density measurement & trend calculation
Leakages of gas compartment Gas density Gas compartments
Arc detection Internal flash-over Optical arc detection Gas compartments
Partial discharge Partial discharge UHF Gas compartments
Device supervision (self supervision) Device malfunction Watchdog signal All electronic devices
Digital GIS Substation
July 26, 2019 SA = Substation automation Slide 16
Past Present From wired to optical communication
SA conventional
Control room
SCADA
Distribution, protection, control
Copper cables
Copper cables
Copper cables
GIS
Bay cubicle
SA with station bus
Gateway HMI
Copper cables
GIS
Bay cubicle
to other bays
Optical communication network
IEC 61850 Station bus
SA with process bus
GIS
Copper or glassfibre cables Bay cubicle
Gateway HMI
to other bays
Optical communication network
IEC 61850 Station bus
IEC 61850 Process bus
Sensors, actuators
GIS drives have conventional control signals
Evolution of Substation Automation (SA)
Providing value to our customers
Digital GIS Substation
July 26, 2019
LCC =Local Control Cubicle CT = Current Transformer IED = Intelligent Electronic Device VT = Voltage Transformer NCIT = Non-Conventional Instrument Transformer
Slide 17
Installation phase
Material reduction
Less P&C panels, cabling & cable engineering. Less CT/VT cores, space reduction
Standardized and factory-tested panels
Building blocks, e.g. analog and binary IO kiosks
Late customization, even after project delivery
All communication digital based on IEC61850
Outage time reduction
Faster installation through pre-tested process bus systems
Standardized and space
effective LCCs
IEDs enable late customization
NCIT – one for multiple
requirements
CT/VT connected via SAM600
Smaller dimensions means less SF6 (4-15% less SF6)
NCIT enable material reduction (5-12% less weight)
Reduced footprint with digital control
Reduced cabling from GIS to
external
IEDs enable digital commissioning
Smaller dimensions can reduce GIS
footprint (0-50% less space)
NCIT – configurable ratings, no trouble
with burden
Providing value to our customers
Digital GIS Substation
July 26, 2019
LCC =Local Control Cubicle CT = Current Transformer IED = Intelligent Electronic Device VT = Voltage Transformer NCIT = Non-Conventional Instrument Transformer
Slide 18
Operational phase
Easier maintenance
Upgrading equipment with less need for outages
Increased safety
Digitizing all signals right at their source reduces the risk of electrical hazards
Effective maintenance
More supervision knowing better what & where equipment failed
Standardized process interface
Fast replacement process and bay electronics during primary equipment lifetime
CT/VT connected via SAM600
IEDs enable digital signals
MSM, CB and PD Monitoring
Clear interface between LCC
and drives
IEDs enable digital upgrades
Standardized space effective LCCs
NCIT enable digital signals
NCIT electronics are easy to change
Primary sensors of NCIT does not need any re-calibration
SF6 as an insulation and switching medium in electrical switchgear
July 26, 2019
*GWP- The global warming potential describes how much heat a greenhouse gas traps in the atmosphere. It compares the amount of heat trapped by a certain mass of the gas in question to the amount of heat trapped by a similar mass of carbon dioxide. GWP is expressed as a factor of carbon dioxide.
Slide 19
Eco-efficient GIS
• The key technical parameters for an insulation gas in switchgear are its dielectric strength and arc quenching capabilities. For use in GIS, there are other, less obvious, but equally important properties – such as low boiling point, low toxicity, stability, low flammability, zero ozone depletion potential (ODP) and very low global warming potential (GWP*).
• For decades, the unique properties of sulfur hexafluoride (SF6) have made it popular as an insulation and switching medium for electrical switchgear. However, SF6 is a greenhouse gas and there are life-cycle management costs associated with its use.
Technology breakthrough in GIS as an alternative to SF6 gas
July 26, 2019 Slide 20
Eco-efficient GIS
• Technology breakthrough in GIS took place when Fluoroketone based gas mixture, an alternative to SF6 was developed to substantially lower down carbon dioxide (CO2) equivalent emissions by up to 50% over the product life cycle.
• The CO2 emissions consists of approximately 50% from raw materials, manufacturing and energy losses, and 50% from SF6 emissions based on a 30-year service life.
• GWP of new gas mixture is almost 100% lower than GWP of SF6.
Video
July 26, 2019 Slide 21
Eco-efficient GIS
Benefits of Digital GIS substations
Conclusion
July 26, 2019 Slide 22
Upon using digital GIS substations, it is elicited that depending on customer requirements and layouts, customers benefit
– Up to 35% less footprint with digital HV GIS
– Up to 20% less costs with digital HV GIS
– Cost savings due to late customization for digital HV GIS create a benefit of less extra charges and less required additional time for the delivery. This includes the total value chain from the order to installation & commissioning
– Connected Asset Management System support reducing customer efforts for maintenance management and reduce service as well as outage times
– Increased safety support reduction of work accidents as secondary circuits need not to be changed during the operation of HV GIS
Benefits of Eco-efficient GIS
Conclusion
July 26, 2019 Slide 23
Eco-efficient GIS is advantageous considering underneath facts-
– Regulatory procedures for SF6 such as maintaining inventory, special requirements in gas handling, filling and decommissioning of the equipment will be avoided.
– Savings can be made in SF6 related taxes which are applicable in some countries.
– The new has mixture is the only one available so far that has been type tested according to IEC standards which meets performance criteria and has a GWP ≤ 1.