Case

Position:Home >> Case

The Case of a Residence Community in Fujian

 

【Basic Information of the Residence Community】
■The community covers an area of 32,000 square meters, including 8 buildings of multi-storey and high-rise.
■The entire community is supplied by 1 power line of 10kV via central transformer substation.
 
【Former Power Supply Planning for the Community】
■The station of electricity transformation and distribution is installed in building 6#, supplying power to each building by low-voltage cables.
■The community is supplied by 2 oil-immersed transformers, and the radius of low-voltage power supply is about 150 meters on the average.
 
【Integrated Planning for the Community】
■The community is supplied by 1 line of 10kV power to form dry type power supply.
■1 Chinese-type switchyard and 2 Chinese-type transformer substations (outdoor) of 500KVA are installed in the center of the community.
■The radius of low-voltage power supply is about 50 meters on the average.
[Investment and Operation Comparison of Former Planning with Integrated Planning of Power Supply]
 
Table 1 Comparison of Investment and Losses

Project
Planning
 
Costs of High-Voltage and
Low-Voltage Equipments
Total Costs
of Cables
Total Costs
of Project
Total Annual Losses
Total Annual
Operating Costs
(Transformers plus Cables)
Yuan
Yuan
Yuan
Yuan
0.5Yuan per kWh
Conventional
Planning
434000
559649
993649
160336
80168
Integrated
Planning
510000
291238
801238
107980
53990
Ratio
118%
52%
81%
67%
67%

1. The percentages in Table 1 are values of data of integrated planning divided by those of the former planning.
2. The total annual operating costs are calculated by 0.5 Yuan per kWh.
3.  Labor costs and installation costs are not included.
 
Table 2 Comprehensive Economic Evaluation of Energy Efficiency for 5-year operating and 10-year operating

Service Life
 
5-Year Operating (Yuan)
10-Year Operating (Yuan)
Type of Planning
0.5 Yuan per kWh
0.5 Yuan per kWh
Former Planning
(CT=CI+CP)
CI
993649
993649
CP
400840
801680
CT
1394489
1795329
Integrated Planning
(CT=CI+CP)
CI
801238
801238
CP
269950
539900
CT
1071188
1341138
Ratio
77%
75%

NOTE: CI, total investment of all equipments; CP, total costs of losses; CT, total costs of project
       Ratio, the percentage of data of integrated planning divided by those of the former planning
 
From the comparison in the table above, integrated planning can be characterized as following:
■The project costs are 81% of those of the former planning
■The total annual losses and total operating costs are 67% of those of the former planning
■Comprehensive efficiency evaluation of 5-year service: CT values can be saved by 1394489-1071188=323301 (Yuan)
■Comprehensive efficiency evaluation of 10-year service: CT values can be saved by 1795329-1341138=454191 (Yuan)
■The total project costs for 10-year operating are 801238 Yuan, saving 454191 Yuan. Thus, it is possible to recover the investment costs after about 10 years at one time. 



Copyright:Shenyang Haocen Electric Co.,Ltd  ServiceTel:400-024-9266 ICP:Liao ICP Number11012034-1 Link
  Technical Support:Pangu