SmartGridDevelopmentinChina and … · Introduction – NARI Group Corporation ! Wholly-owned...
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Smart Grid Development in China and A Power System Security and Stability Defense System Asia U=lity Week Ming Ni NARI Technology Inc., China [email protected] 1
Transcript of SmartGridDevelopmentinChina and … · Introduction – NARI Group Corporation ! Wholly-owned...
Smart Grid Development in China and
A Power System Security and Stability Defense System
Asia U=lity Week
Ming Ni NARI Technology Inc., China ni-‐[email protected]
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Outline
Smart Grid Development in China �2 �
Security & Stability Defense System 3 �
IntroducFon �1 �
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State Grid CorporaFon of China • 26 provinces of Mainland China
• covering 88% of China’s territory
State Grid Corpora=on of China
• Over 655 ,000 kilometers
(110 (66) kV and above)
Length of Transmission Line
• 2.39 billion KVA
(110 (66) kV and above)
Substa=on Capacity
• Serves over 1.1 billion popula=on
• Peak Demand: 590GW (2013)
• Energy Supplied: 3523TWh (2013)
Customers & Annual Sales
Northwest China Grid
Central China Grid
North China Grid
Northeast China Grid
East China Grid
Geographical Profile of Transmission Companies
China Southern Grid
Introduc=on -‐ Transmission Companies in China
Introduction – NARI Group Corporation
n Wholly-owned subsidiary of SGCC
n NO.1 provider of power system automation,
hydropower automation and water
conservation, rail transportation monitoring
technology, equipment and services
n Employee 21,000 as of 2012
IT & Communication
Distribution & Utilization
Industrial Control
Renewable Energy
Power Generation
Transmission & Transformation
Stability Control & Dispatching
Rail Transportation
NARI
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2011-‐2015 �
2016-‐2020 �
2009-‐2010 �
Pilot Study
Overall Construc=on �
Improvement �
SGCC smart grid development -‐ 3 stages �
SGCC Smart Grid -‐ Planning �
Formula=ng development plan, standards； R&D on key technology and equipment ； Launching pilot projects �
Strengthen UHV grids and distribu=on grids； Realize breakthroughs in and wide use of key technologies and equipment �
Enhancing resources alloca=on capability, reliability, efficiency and interac=on among power grid, power sources and consumers
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Demonstra=on Projects -‐ Overview
Since 2009 �
Ø Launched 313 pilot projects. Ø 286 pilot projects completed so far.
Ø 36.2 billion Yuan invested totally
SGCC’s total investment in smart grid in 2014 is 77.5 billion Yuan, include renewable energy, distributed resources, smart city, etc.
Demonstra=on Projects -‐ Overview
Demonstra=on Projects -‐ Overview
Demonstra=on Projects – Wind-‐PV-‐Storage-‐Transmission Pilot project
Ø The Wind-‐PV-‐Storage-‐Transmission Pilot project locates at the Zhangbei county, 200km northwest of Beijing.
Ø Phase I：100MW Wind Power, 40MW PV power, 20MW energy storage and a 220KV smart transformer substaFon. Phase II：400MW Wind Power, 60MW PV power, 50MW energy storage. Fully demonstrate the effect of the wind/PV/Storage/Transmission coordinated operaFon, Wind/PV/storage ≈convenFonal power sources.
Large-‐scale Wind Power Forecast & OperaFon Control
Ø 6 pilot projects in operaFon in North China, Northeast China , Northwest China, Xinjiang, Jilin and Gansu
Micro grid OperaFon of Distributed GeneraFon
Ø 25 pilot projects has been built in city, island and rural area
Demonstra=on Projects -‐ Renewable Energy Integra=on
2010 Shanghai EXPO
Sino-‐Singapore Tianjin ECO-‐CITY
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State Grid Pavilion received 1.61 million visitors �
Smart grid comprehensive demonstraFon projects are under construcFon in over 25 districts, such as Beijing, Shandong, etc.
Demonstra=on Projects – Comprehensive Demonstra=on Project �
Tianjin eco-‐city ,Shanghai Expo, Yangzhou，Youth city，Shaoxing and Zhengzhou Comprehensive smart grid demonstraFon project already started operaFon.
Demonstra=on Projects – Comprehensive Demonstra=on Project �
Tianjin Eco-‐city Comprehensive smart grid demonstra=on project �
PV �
Exhibi=on hall �
Wind farm �
Communica=on network �
Distribu=on automa=on �
AMI �
Micro grid & energy storage
Smart building/home �
110kV smart substa=on �
EV charge facili=es �
Power company �
750kV smart substaFon in Yan’an
The 500kV smart substaFon in Yu’shan
656 smart substaFons of 110KV~750KV built up.
220kV smart substaFon in Xi’jing
Smart distribuFon system built up in 23 ciFes.
DistribuFon and Dispatching Hall in Qing’dao DA management system in Qing’dao Integrated Terminal
Demonstra=on Projects – Smart Substation and Distribu=on Automation �
383 charging/battery-‐swap staFons and 17,000 charging poles have been built, covering 26 provinces and municipaliFes.
EV charging/bahery-‐swap service networks have been set up in Qingdao and Hangzhou.
EV Bahery-‐swap StaFon in Qingdao
Demonstra=on Projects -‐ EV service
EV Charging/bahery-‐swap service network inHangzhou
Ø OperaFng since July, 2011 Ø Serving 200 buses Ø Providing bahery-‐swap services for 176,000
Fmes
嘉兴服务区
枫泾服务区
阳澄湖服务区
新塍服务区
白洋湖服务区
邓蔚路充换站
嘉定区充换站
闵行区充换站
石桥站充换站
Smart EV charging/baiery-‐swap/storage integrated
sta=on in Qingdao
Ø 128 charging/baher-‐swap staFons, realizing cross-‐city interconnecFon for 5 ciFes
Ø Serving 700 electric vehicles, including 200 taxies
EV Charging/baiery-‐swap service network in Hangzhou
Demonstra=on Projects -‐ EV service
Smart Meter Master Station
Monitoring &control
Event Report
Smart terminal
Ø The world’s largest AMI system
Ø Master staFons of informaFon
collecFon systems in 27 provinces
Ø Installation of 170 million smart
meters
Monitoring &control
Demonstra=on Projects -‐ AMI �
Overview of WARMAP – Power System Security and Stability Defense System
• Wide Area Monitoring Analysis Protec=on-‐control (WARMAP) is a Power System Security and Stability Defense System developed by NARI and has been installed in about 80% of regional and provincial control centers in China.
• Data for WARMAP is from: Energy Management System (EMS), Wide-‐Area Measurement System (WAMS), AutomaFc GeneraFon Control (AGC) system, power stability control system, and weather forecasFng system
• Main func=ons are : online quanFtaFve assessment of power system security and stability; online opFmizaFon and decision system for preventaFve control and emergency control; coordinated control of mulFple failures (include weather caused failures) and cascading failures.
• Rapidly changing operaFng condiFons are induced by energy conservation, power market, distributed generation, energy storage, electric vehicles, and so on.
• Risk of unsecure operation and difficulty in operaFon and control are increasing due to the integration of new energy resources and extreme natural disasters
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Offline to online Warning to decision support and closed-‐
loop control
security and stability analysis
Wide Area Monitoring Analysis Protection-control System （WARMAP）
Qualita=ve to quan=ta=ve
Changing system operating conditions
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Software structure External systems
EMS Stability control systems
External network data
Operation management
system
Dispatching plan data
Geographic informaFon
of grid equipment
External environmental informaFon
PMU data
Unified support plaqorm of grid informaFon and external environment informaFon
Data processing
subsystem Data processing subsystem
Parallel calculation subsystem
parallel calculaFon plaqorm
Online security & stability warning
and decision-‐making
Online verificaFon and opFmizaFon for emergency control
decisions
Short-‐Fme security & stability warning
and decision-‐making
Security & stability warning and
decision-‐making prior to operaFon
Security & stability check and decision-‐
making for dispatching scheme
Offline Analysis
Data storing
subsystem
Information publishing subsystem
Human- Computer
Interface subsystem
data storing
subsystem
informaFon publishing subsystem
Human-‐Computer Interface subsystem
Key techniques
1. Generation of contingency set
2. Integrated quantitative evaluation
3. Decision support
4. Online analysis and real-time control of low-frequency oscillation
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µ According to external environmental informa=on, power grid real-‐=me opera=ng condi=ons and geographic informa=on of transmission lines, line fault probabili=es caused by typhoon, lightning, icing or wildfire are evaluated.
µ A set of high-‐risk devices is picked.
Real-‐=me con=ngency set
High-risk device set
Real-‐=me analysis of fault probability
Environmental Informa=on
Quantitative Assessment
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Margin curves
Static security
Transient security
Dynamic security
Visualization of quantitative stability assessment results
Sta=c security
Transient security
Dynamic security
Transmission limit
Optimal calculation model
∑Ω∈
Δ=k
kpk PCf )(min
cost
adjustment set
power balance constrains
various threshold constrains ..ts
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Transient stability/Overload preventive/emergency control
Ø Calculate comprehensive participation factor for various stability and controls.
Ø The soluFon for one specific stability should not undermine other stability and security constraints .
Ø IteraFve method can be used to deal with the correlat ion between transient instability and overload insecurity.
Control Coordination satisfying multi stability and security objectives
overload analysis
TS control
TS analysis
result output
overload control
iter++
N
Y
Y
N
Y
N
iter==1
stable
secure
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Optimal calculation procedure
Screen critical con=ngencies and iden=fy instability mode
Iden=fy con=ngencies of same unstable mode
Exclude the contradictive actions
Calculate performance index of control ac=ons for various problem
Form re-‐dispatch plans of the best solution
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On-line analysis of low-frequency oscillation
The active power of Honghe 2# unit
Frequency: 0.38Hz
duration time: 6min
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WARMAP Structure
Ø The response time of closed-loop adaptive emergency control is less than 150ms
Ø The tripped active power error is less than the minimum active power among all generators
Ø The error of loadshedding is less than 20MW
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four-layer structure
Central calculation station
Master control station
Control substation
Execution station
WARMAP has been applied in about 27 control centers above provincial level grid
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There are 10 control centers where WARMAP have been in operation for over 3 years, 11 control centers for nearly 3 years , and 6 control centers in the process of commissioning . Among which, the JIANGSU system implemented the close-loop control.
