WAMS in China
WAMS in China - Epcc-workshop.net
WAMS in China - Epcc-workshop.net
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>WAMS</strong> <strong>in</strong> Ch<strong>in</strong>a<br />
J<strong>in</strong>gtao Wu<br />
j<strong>in</strong>gtao_wu@sf-auto.com<br />
Beij<strong>in</strong>g Sifang Automation Co. Ltd<br />
12 June 2007<br />
Ullensvagen hotel, Norway
Power System <strong>in</strong> Ch<strong>in</strong>a<br />
4000km<br />
300GW<br />
generation<br />
Northeast<br />
Northwest<br />
North<br />
3000km<br />
HVDC<br />
Center<br />
HVDC<br />
HVDC<br />
East<br />
Taiwan<br />
Guizhou<br />
Tibet<br />
Yunnan<br />
Guanxi<br />
Guangdong<br />
HK<br />
Ha<strong>in</strong>an<br />
80GW<br />
generation<br />
1000km<br />
2000km
DC realized(16)<br />
DC under construction(9)<br />
2007<br />
2006<br />
2003<br />
2003<br />
2003<br />
2007<br />
PMU<br />
2007<br />
2006<br />
2006<br />
2007<br />
2007<br />
2006<br />
2006<br />
2006 2004<br />
2006<br />
2007<br />
2006<br />
2007<br />
2004<br />
2007<br />
2005<br />
2002<br />
2005<br />
2007
PMU <strong>in</strong>crement / year<br />
More than<br />
400 PMU will be <strong>in</strong>stalled <strong>in</strong><br />
the end of 2007<br />
More than<br />
12 million $ <strong>in</strong>vestment<br />
80<br />
180<br />
PMU location<br />
Substaion:<br />
All 750kV<br />
All 500kV<br />
Part 330kV<br />
Part 220kV<br />
Generator:<br />
All 600MW<br />
Part 300MW<br />
50<br />
50<br />
35<br />
year<br />
2003 2004 2005 2006<br />
2007(Feb-March)
Distributed measurement <strong>in</strong> substation<br />
Data center<br />
25-100 Frames/s<br />
GPS<br />
Communication<br />
System<br />
CSS-200/1G<br />
CSS-200/1P<br />
PPS & Clock<br />
Phasor<br />
Ethernet 100M<br />
Rotor Angle<br />
CSS-200/1A<br />
CSS-200/1A<br />
CSS-200/1A<br />
CSFU-107<br />
CSFU-107<br />
AC voltages<br />
AC currents<br />
Rotation<br />
pulse
Data center <strong>in</strong> dispatch<strong>in</strong>g center<br />
EMS<br />
Warn<strong>in</strong>g<br />
<strong>WAMS</strong><br />
Data center<br />
Special designed Real time DB<br />
to handle PMU data with timestamp refresh<strong>in</strong>g 10-20ms<br />
Special designed History DB<br />
to handle Huge data more than 1000GB
Event analysis<br />
• F<strong>in</strong>d the root cause of system events.
Simulation model analysis by artificial tests<br />
• In 2004 and 2005, northeast grid 500kV transmission l<strong>in</strong>e three<br />
phase to ground to <strong>in</strong>vestigate the load model.<br />
• In 2007 , northwest grid 330kV transmission s<strong>in</strong>gle l<strong>in</strong>e phase to<br />
ground ,trip generators to testify new generation models and PSS<br />
performance.<br />
PSS off, Damp 5%<br />
PSS on,Damp 9%
Low frequency oscillation management<br />
• There were lots of oscillation <strong>in</strong> past 3 years, <strong>WAMS</strong> become<br />
imperative to deal with the dangerous oscillation.<br />
Normal state<br />
Assess osc. freq.<br />
and damp<strong>in</strong>g<br />
Under osc.<br />
Intelligent warn<strong>in</strong>g<br />
Under osc.<br />
Wide area control<br />
Power ocsillation
Assessment of oscillation<br />
• Scan all transmitt<strong>in</strong>g power<br />
under normal state.<br />
• If oscillation power > 10MW<br />
and duration > 5 oscillat<strong>in</strong>g<br />
cycles, the event is registered.<br />
• Statistics shows: oscillation<br />
with poor damp<strong>in</strong>g will have<br />
more events.<br />
• The assessment successfully<br />
predicts dangerous oscillation<br />
event before its real<br />
occurrence.<br />
Osc.events distrubition<br />
Freq. -- Event<br />
Real power -- Event
Intelligent warn<strong>in</strong>g dur<strong>in</strong>g oscillation<br />
• Group coherent bus and<br />
identify the oscillation<br />
<strong>in</strong>terface.<br />
• Sort contribution factors<br />
of bus <strong>in</strong>jeciton power to<br />
<strong>in</strong>dicate the dangerous<br />
bus or generator.<br />
• Visualization of<br />
oscillation distribution.
<strong>WAMS</strong> based damp<strong>in</strong>g control<br />
RTDS center of Ch<strong>in</strong>a southern grid co.<br />
CSS-200/5M DC<br />
CSS-200/1<br />
PMU<br />
CSS-200/5C<br />
Controller<br />
HDVC
Simulation of HDVC supplement control<br />
Adaptive control:<br />
Onl<strong>in</strong>e recognize the oscillation<br />
And change controller parameters<br />
Adaptive function OFF<br />
Adaptive function ON
In future<br />
• In data center:<br />
– <strong>WAMS</strong> and EMS will be comb<strong>in</strong>e with each other,<br />
full dynamic EPCC will be realized<br />
– More response based application will be developed.<br />
(others are model based analysis).<br />
• In substation:<br />
– PMU and RTU will be replaced by new IED with<br />
synchrophasor measurement function and<br />
support<strong>in</strong>g IEC 61850<br />
1960s<br />
EMS<br />
2000s<br />
EMS/<strong>WAMS</strong><br />
2020s<br />
<strong>WAMS</strong>
Reference<br />
• <strong>WAMS</strong> Implementation <strong>in</strong> Ch<strong>in</strong>a and the Challenges for Bulk Power<br />
System Protection. IEEE General Meet<strong>in</strong>g June 24-28, 2007 , Tampa,<br />
Florida, USA<br />
• Design and experiment of heuristic adaptive HVDC supplementary<br />
damp<strong>in</strong>g controller based on onl<strong>in</strong>e Prony analysis, IEEE General<br />
Meet<strong>in</strong>g June 24-28, 2007 , Tampa, Florida, USA<br />
• Advanced Low Frequency Oscillation Analysis Based on <strong>WAMS</strong> <strong>in</strong> a<br />
Prov<strong>in</strong>cial Dispatch<strong>in</strong>g Centre. International Conference and<br />
Exhibition Relay Protection and Substation Automation of Modern<br />
EHV Power Systems, September 9-12, 2007, Moscow Russia
Change language