Ｎｏｖ 22, 2005
DESCRIPTION
Outline of the Demonstrative Research Project on Efficient Technologies for Photovoltaic Power Generation for Grid-connected Systems in China. Ｎｏｖ 22, 2005. Contents. Corporate Profile of Shikoku Electric Power Co. (YONDEN) - PowerPoint PPT PresentationTRANSCRIPT
Outline of the Demonstrative Research Project on Outline of the Demonstrative Research Project on Efficient Technologies for Photovoltaic Power Efficient Technologies for Photovoltaic Power
Generation for Grid-connected Systems in ChinaGeneration for Grid-connected Systems in China
Ｎｏｖ 22, 2005
2
Contents Corporate Profile of Shikoku Electric Power Co.Corporate Profile of Shikoku Electric Power Co.
(YONDEN)(YONDEN) International Cooperative Demonstrative Research International Cooperative Demonstrative Research
Project Utilizing Photovoltaic Power Generation Project Utilizing Photovoltaic Power Generation Systems of NEDOSystems of NEDO
Overview of the Demonstrative Research Project on Overview of the Demonstrative Research Project on Efficient Technologies for Photovoltaic Power Efficient Technologies for Photovoltaic Power Generation for Grid-connected Systems in ChinaGeneration for Grid-connected Systems in China
Project ResultsProject Results
3
Corporate Profile ofCorporate Profile ofShikoku Electric Power Co.Shikoku Electric Power Co.
4
General Overview
• Established on May 1, 1951• One of the 10 electric utilities
in Japan• Service area covers Shikoku
Island• 4,872 employees• 26,273 mil. kWh sales in
FY2004
10
1 MW PV System 300 kW PV System
Renewable Energy in Shikoku, Japan
300 kW Wind Turbine Fuel Cell Pilot Plant
Yonden’s PV ProjectsSyria
Laos
Cambodia
XinjiangChina
ShikokuJapan
Kiribati
Panama(FS & Basic Design)
16
International Cooperative Demonstrative International Cooperative Demonstrative Research Project Utilizing Photovoltaic Research Project Utilizing Photovoltaic
Power Generation Systems of NEDOPower Generation Systems of NEDO
17
International Cooperative Demonstrative Research Project Utilizing Photovoltaic Power Generation Systems of NEDO
A renewable energy power generation system, such as PV, is easy to maintain and environmentally friendly, with an energy supply that is virtually unlimited. Early application of the technology for practical use is extremely significant for a stable energy supply and environmental protection.
A demonstrative project is conducted in cooperation between NEDO and a host country to develop technology for power generation systems. It utilizes various renewable energy resources in accordance with the climatic conditions and social systems of the host country.
The objectives of such projects are:
1)To promote the introduction of renewable energy power generation
systems through demonstrative operation to achieve various manners of
utilization
2)To support the self-help efforts of the host country regarding
environmental protection and efficient energy utilization
18
International Cooperative Demonstrative Research Projects Utilizing Photovoltaic Power Generation Systems of NEDO
FY1992 ～ FY2005
9 Countries China, Thailand, Malaysia, Vietnam, Myanmar, Mongolia, Cambodia, et al.
15 Projects
19
Overview of the Demonstrative Overview of the Demonstrative Research Project on Efficient Research Project on Efficient
Technologies for Photovoltaic Power Technologies for Photovoltaic Power Generation for Grid-connected Systems Generation for Grid-connected Systems
in Chinain China
20
星星峡 Xingxingxia（星星峡）
21
Objective of the Project(1) Early commercial application of a system that maximizes the utilization of new energy to promote the mass introduction of new energy provided by PV power generation, etc.
(2) Establishment of an effective system for PV power generation, etc. within small-scale grids on the supply side
(3) Verification of the improvement of output through cooling of PV power generation modules
(4) Improvement of power generation efficiency of the entire system and control of output fluctuation
(5) Verification of system efficiency taking into consideration the stability in electricity supply and improved economics by such as life extension or reduction of the number of storage batteries
(6) Design of a system dissemination plan
22
Research Contents
This demonstrative research is to verify technology that is designed to stabilize the power system.It accomplishes by charging and discharging of the concentrated battery unit which will control the generating output. This technology compensates the normal fluctuation that are caused by irradiation variances and load fluctuation that occurs on the consumer side.
23
Research StructureNew Energy and Industrial Technology Development Organization
(NEDO)
New Energy and Industrial Technology Development Organization
(NEDO)
Shikoku Electric Power Co., Inc.Shikoku Electric Power Co., Inc.
National Development and Reform Commission
Xinjiang Uygur Autonomous Regional Development Planning Commission
National Development and Reform Commission
Xinjiang Uygur Autonomous Regional Development Planning Commission
China Xinjiang Sunoasis Co., LtdChina Xinjiang Sunoasis Co., Ltd
Basic Agreement
mutual cooperation
Trust Report
Shikoku Research Institute Inc.Shikoku Research Institute Inc.
Yonden Engineering Co., Inc.Yonden Engineering Co., Inc.
Trust Report
Second Trust
24
PV（ 60kW）
Diesel Generator(70kW)
Advanced Storage Batteries
(80kW/400kWh)
Control Panel
Water-Cooled PV(10kW)
System Overview
25
System Construction
Advanced Battery
ConventionalBattery
Bi Directional Inverter
PhotovoltaicArray
［ 50kW］ InverterGrid-connected
Central Control Panel
Water Supply
Equipment
PhotovoltaicArray（Water-Cooled）
InverterGrid-
connected
Alternating Current Grid
DG
InverterGrid-
connected
InverterGrid-
connected
PhotovoltaicArray（Water-Cooled）
PhotovoltaicArray
（ Standard）
27
Lower Limit
Operation pattern （ daytime ） PV Output Demand Power＜＞＜
Upper Limit
28
Operation pattern （ nighttime ） Battery Output Demand Power＞
Lower Limit
＜
29
Type of water-cooled PV（ Running water type ）
・ PV panels are cooled by water which run through in copper pipes under the panels
Copper pipes with aluminum
fin
PV PanelPV Panel
Cooling WaterCooling Water
30
Type of water-cooled PV（ Storage water type ）
・ PV panels are cooled by water stored in jackets under the panels
JacketJacket
GL
PV PanelPV Panel
32
System Overview（ Centralized Control Method and Dispersed Control Method ）
Centralized Control Method ・ All systems are controlled from a centralized control system ・ Communication lines supply the centralized control system with all the necessary data ・ Readily available information improves the control quality ・ When a generation system is added, the centralized control system must be modified and an extension of the communication line is requiredDispersed Control Method ・ Self-control of each generation system ・ Communication line to collect information from the power system is not necessary ・ The control quality is not as good because each system is independently controlled ・ It is easier to add a new generator system as it does not require extensive modification and line extension
33
Construction Overview
Tollgate
Power Supply Area
Town Administration
Water Purification Plant
PV:10kW
（ Water-Cooled ）
PV:60kW
DG ： 70kW
Bat ：400kWh
Control System
Distribution Line:3Phase4Wire-380V,approx.1km
Petrol Station
34
Actual Process
10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 92003 2004 2005
★Kick off Meeting (10/22 at Urumqi)
House,Foundation,fence Work
▼Commencement of Construction(5/28)
Water-cooled PV,Water supply equipment
Install and Adjustment
Distribution Line Work
FirstTransport
SecondTransport
60kWPV,Bat,Weather Monitoring System
ThirdTransport
Control Panel,DG Install and Adjustment
▼Commencement of Operation(4/1)
Test OperationCollection and Verification of the data
Construction of upkeep structure
★Ceremony of the completion(4/22 at Xingxingxia)
Install and Adjustment
35
36
37
38
39
40
43
Project Results Project Results
44
Result of research （ Water-cooling effect ） The temperature of PV module increased by approx. ＋ 30 ℃
when compared to ambient temperature Cooling decreased the temperature of PV module approx. 20 ℃
（ running ・ storage ） Efficiency increased approx. 0.18 ～ 0.68% as a result of
cooling The difference of module temperature （ 14.9℃ ） =Standard Module （ 46.5 )℃ － Running Water Module(31.6 )℃ The increase of output （ 252.8W)
＝ Running Water Module(2751.6W) － Standard Module （ 2498.8W ）
The efficient(0.68% ／℃）＝ 252.8(W)÷2498.8(W)÷14.9 （℃） The Running Water cooling method is more effective than the
Storage Water cooling method
45
Module Temperature
0
10
20
30
40
50
60
70
20
05
/6/1
3 0
:00
20
05
/6/1
3 1
:00
20
05
/6/1
3 2
:00
20
05
/6/1
3 3
:00
20
05
/6/1
3 4
:00
20
05
/6/1
3 5
:00
20
05
/6/1
3 6
:00
20
05
/6/1
3 7
:00
20
05
/6/1
3 8
:00
20
05
/6/1
3 9
:00
20
05
/6/1
3 1
0:0
0
20
05
/6/1
3 1
1:0
0
20
05
/6/1
3 1
2:0
0
20
05
/6/1
3 1
3:0
0
20
05
/6/1
3 1
4:0
0
20
05
/6/1
3 1
5:0
0
20
05
/6/1
3 1
6:0
0
20
05
/6/1
3 1
7:0
0
20
05
/6/1
3 1
8:0
0
20
05
/6/1
3 1
9:0
0
20
05
/6/1
3 2
0:0
0
20
05
/6/1
3 2
1:0
0
20
05
/6/1
3 2
2:0
0
20
05
/6/1
3 2
3:0
0
Time
Tem
pera
ture
(℃)
0
0.2
0.4
0.6
0.8
1
1.2
Sola
r R
adia
tion(k
W/m
2)
①Avg. Temp Standard ＰＶ
②Avg. Temp Storage Water ＰＶ
③Avg. Temp Running Water ＰＶ
④Ambient Temperature
⑤Solar Radiation
Water Cooling Effect （ module temperature － Solar
Radiation ）
47
Water Cooling Effect （ PV Output ）
PV Output(Solar Radiation ： 1kW/m2
Conversion)
0
500
1000
1500
2000
2500
3000
3500
20
05
/6/1
3 0
:00
20
05
/6/1
3 1
:00
20
05
/6/1
3 2
:00
20
05
/6/1
3 3
:00
20
05
/6/1
3 4
:00
20
05
/6/1
3 5
:00
20
05
/6/1
3 6
:00
20
05
/6/1
3 7
:00
20
05
/6/1
3 8
:00
20
05
/6/1
3 9
:00
20
05
/6/1
3 1
0:0
0
20
05
/6/1
3 1
1:0
0
20
05
/6/1
3 1
2:0
0
20
05
/6/1
3 1
3:0
0
20
05
/6/1
3 1
4:0
0
20
05
/6/1
3 1
5:0
0
20
05
/6/1
3 1
6:0
0
20
05
/6/1
3 1
7:0
0
20
05
/6/1
3 1
8:0
0
20
05
/6/1
3 1
9:0
0
20
05
/6/1
3 2
0:0
0
20
05
/6/1
3 2
1:0
0
20
05
/6/1
3 2
2:0
0
20
05
/6/1
3 2
3:0
0
Time
Outp
ut(
W)
Standard ＰＶ (1kw/m2) Storage Water ＰＶ (1kW/m2) Running Water P Ｖ (1kW/m2)
48
Result of research （ Frequency Fluctuation ）
Frequency fluctuation(specified value ±0.5Hz （ ±1% ） ) occurs when the diesel generator starts and stops operating.
Fluctuation is automatically compensated by the system, so there is no negative effect to customers.
The change in frequency fluctuation was limited to ±0.3Hz from standard value
・ A change of ±0.3Hz occurred 99.4% of the time
(from April to July)
49
Frequency Fluctuation （ Centralized control ）
Frequency
49.049.249.449.649.850.050.250.450.650.851.0
20
05
/7/3
0:0
0
20
05
/7/3
1:0
0
20
05
/7/3
2:0
02
00
5/7
/3 3
:00
20
05
/7/3
4:0
0
20
05
/7/3
5:0
02
00
5/7
/3 6
:00
20
05
/7/3
7:0
0
20
05
/7/3
8:0
0
20
05
/7/3
9:0
02
00
5/7
/3 1
0:0
0
20
05
/7/3
11
:00
20
05
/7/3
12
:00
20
05
/7/3
13
:00
20
05
/7/3
14
:00
20
05
/7/3
15
:00
20
05
/7/3
16
:00
20
05
/7/3
17
:00
20
05
/7/3
18
:00
20
05
/7/3
19
:00
20
05
/7/3
20
:00
20
05
/7/3
21
:00
20
05
/7/3
22
:00
20
05
/7/3
23
:00
Time
(Hz)
51
0
20
40
60
80
100
49. 349. 5～
49. 549. 7～
49. 749. 9～
49. 950. 1～
50. 150. 3～
50. 350. 5～
50. 550. 7～
Distribution of Frequency （ from April to July ）
99.4%
52
Result of research （ Voltage Fluctuation ）
Voltage fluctuation was limited to ±10V from standard value
・ A change of ±10V occurred 100% of the time
(from April to July)
53
Voltage Fluctuation （ Centralized control ）Transmission line Voltage (Avg. 10min ）
350.0
355.0
360.0
365.0
370.0
375.0
380.0
385.0
390.0
395.0
400.020
05/7
/3 0
:00
20
05/7
/3 1
:00
20
05/7
/3 2
:00
20
05/7
/3 3
:00
20
05/7
/3 4
:00
20
05/7
/3 5
:00
20
05/7
/3 6
:00
20
05/7
/3 7
:00
20
05/7
/3 8
:00
20
05/7
/3 9
:00
20
05/7
/3 1
0:0
0
20
05/7
/3 1
1:0
0
20
05/7
/3 1
2:0
0
20
05/7
/3 1
3:0
0
20
05/7
/3 1
4:0
0
20
05/7
/3 1
5:0
0
20
05/7
/3 1
6:0
0
20
05/7
/3 1
7:0
0
20
05/7
/3 1
8:0
0
20
05/7
/3 1
9:0
0
20
05/7
/3 2
0:0
0
20
05/7
/3 2
1:0
0
20
05/7
/3 2
2:0
0
20
05/7
/3 2
3:0
0
Time
(V)
55
0
20
40
60
80
100
366370～
370374～
374378～
378382～
382386～
386390～
390394～
Distribution of Voltage （ from April to July ）
100%
56
Result of research（ Condition of demand ： from April to July ）
The electricity consumption during nighttime （ 21:00 ～2:00) is greater than daytime
Daytime （ 9:00 ～ 20:00) Avg. Power ： 11.3kW
Nighttime （ 21:00 ～ 2:00) Avg. Power ： 20.0kW The consumption during daytime is almost constant The maximum demand
Maximum demand power ： 44.6kW （ July 23 ） Maximum daily consumption ： 454.8kWh （ July
13 ）
57
Avg. Demand curb (from April to July)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.00:
00
1:00
2:00
3:00
4:00
5:00
6:00
7:00
8:00
9:00
10:0
0
11:0
0
12:0
0
13:0
0
14:0
0
15:0
0
16:0
0
17:0
0
18:0
0
19:0
0
20:0
0
21:0
0
22:0
0
23:0
0
Time
Load
(kW
)
April May J une J uly
58
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
4/1
4/6
4/11
4/16
4/21
4/26 5/1
5/6
5/11
5/16
5/21
5/26
5/31 6/5
6/10
6/15
6/20
6/25
6/30 7/5
7/10
7/15
7/20
7/25
Date
Max
imum
Loa
d (k
W)
Maximal Demand (from April to July)
Testing termChipped Data
Max. demand
59
0.0
50.0
100.0
150.0
200.0
250.0
300.0
350.0
400.0
450.0
500.0
4/1
4/6
4/11
4/16
4/21
4/26 5/1
5/6
5/11
5/16
5/21
5/26
5/31 6/5
6/10
6/15
6/20
6/25
6/30 7/5
7/10
7/15
7/20
7/25
Date
Dai
ly E
lect
ric
Ener
gy (kW
)ｈ
Maximal Daily Consumption (from April to July)
Testing term
Chipped data
Max. daily consumption
60
Result of research （ Condition of operation ）
It is verified that the system is operated stably as the start and stop operation of generator are controlled certainly
61
Condition of Operation （ Centralized control ）
Generation power and Charged power
-50.0-40.0-30.0-20.0-10.0
0.010.020.030.040.050.060.070.02
00
5/7
/3 0
:00
20
05
/7/3
1:0
0
20
05
/7/3
2:0
0
20
05
/7/3
3:0
0
20
05
/7/3
4:0
0
20
05
/7/3
5:0
0
20
05
/7/3
6:0
0
20
05
/7/3
7:0
0
20
05
/7/3
8:0
0
20
05
/7/3
9:0
0
20
05
/7/3
10
:00
20
05
/7/3
11
:00
20
05
/7/3
12
:00
20
05
/7/3
13
:00
20
05
/7/3
14
:00
20
05
/7/3
15
:00
20
05
/7/3
16
:00
20
05
/7/3
17
:00
20
05
/7/3
18
:00
20
05
/7/3
19
:00
20
05
/7/3
20
:00
20
05
/7/3
21
:00
20
05
/7/3
22
:00
20
05
/7/3
23
:00
Time
(kW
)
Efficient power of ＢＡＴ INV (kW) Efficient power of DG (kW) Efficient power of ＰＶ INV (kW)
63
The power supply contracts are agreed with 29 customers
The price of electricity was decided RMB1.81 ／ kWh
Overview of Operation & Management
64
Finance Group （ 2person)
Structure of Operation & Management
Check, Renewal, Maintenance
＜ Xinjiang Xingxingxia PV power station ＞
Manager(1person)
管理員（ 4人：2人１組 2交替）Staff （ 4person, 1group2person, 2shift)
メンテナンス会社（サンオアシス予定）
Maintenance Company（ SunOasis [plan] ）
星星峡鎮政府Xingxingxia town Administration
哈密市発展計画委員会Hami city Development Planning Commission
物 価 局Price bureauApproval of tariff
（ Routine patrol and check, change of consumable goods ）
・ read a meter
・ Maintenance of generation system
技術管理
事務管理・ Operation of generation system
（ Operation 、 Replenish Fuel ）
・ React to accident and trouble
Engineer
work
Office work
Entrust a check
Entrust the fundmanagement
Collection of money
Customer
Pay the fund
Dispatch staff
read a meter
65
Thank You
2-5, Marunouch, Takamatsu760-8573 JapanPhone: +81-87-821-5011FAX: +81-87-825-3011