IEEE Power & Energy Magazine - November/December 2015 - 48

CHP Units Monitoring System of the Jilin Power Grid

Power
Mode

No. of Units

3#

Heating
Water
Heating/ Real-Time Historical
Mode Temperature Power
Data
Data

Date 2011-03-09 Search

Operational Curves of No. 3 Unit

Temperature (°C)

80.0

250.0

70.0

200.0

60.0
50.0

150.0

40.0
Heating Water Temperature
Return Water Temperature
Heating Extraction
Power

30.0
20.0
10.0

100.0
50.0
0.0

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23

0.0

Power Output (MW)

300.0

90.0

Time

figure 6. A real-time monitoring system for CHP units in the Jilin power grid.

The total interregional renewable energy trading in 2014
amounted to 19 TWh, increasing by 90% compared to
the level in 2013. The generation in different provinces
has been coordinated and optimized together. Coordination has been strengthened across regional power grids,
and the provincial power dispatch has been optimized.
Wind power in provinces with renewable energy integration difficulties has been integrated interprovincially
or interregionally. For example, interprovincial operation was optimized in the northeast China power grid
during serious wind curtailment periods in Jilin, a wind
resource-rich province in northeast China. The interprovincial tie-line schedules, which were determined a day

19.0

2014
10.0

Year

2013
2012

1.5

2011

0.3

2010

0.2

0.0

5.0

10.0
15.0
20.0
Interregional
Transmission of Renewable Energy (TWh)

figure 7. The interregional transmission of renewable
energy from 2010 to 2014.
48

ieee power & energy magazine

ahead in the power dispatch routine, were adjusted in
real time over 400 times in 2013, and an additional 600
GWh of wind power was integrated. Interregional operation between the northeast China power grid and north
China power grid was also performed to facilitate wind
power integration in northeast China power grid. On 25
April 2013, wind power output was 2,930 MW at 5:30 a.m.
in the east Inner Mongolia power grid, which is part of
the northeast China power grid. The wind power output
accounted for 111% of the local load, and 70% of the
wind power in the east Inner Mongolia power grid at
this time was integrated by being transported to other
provincial power grids in northeast China power grid
and to north China power grid.

Future Development:
Challenges and Opportunities
Renewable energy integration is an important way for the
power sector to combat climate change and achieve sustainable development. Although it is the common choice
of the global energy transition, each country will face different challenges in promoting renewable energy development due to their unique policy frameworks, resource
conditions, and differing stages of development. Compared
with other regions and countries in Europe and the United
States, the external environment of China's renewable
energy development presents two different characteristics.
And these two characteristics introduce both challenges
november/december 2015



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