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A Relocation Project in Sichuan

 

 
【Basic Information of the Community】
■The community covers an area of about 50,000 square meters, a total of 23 buildings.
 
Traditional Planning
■The community is supplied by 2 lines of 10kV south and north ring net power.
■The entire community is supplied by 2 European box-type substations, each installed with 2 power transformers of 630 kV to transform and distribute electricity.
■The radius of low-voltage power supply is about 150 meters on the average, and up to 215 meters.
Integrated Planning
■The community is supplied by 2 lines of 10kV ring net power.
■The entire community is supplied by 1 Chinese-type switching station with dual incoming and outgoing power lines, and 6 Chinese-type transformer substations of 250KVA to 630KVA.
■The radius of low-voltage power supply is about 30 meters.
 

Table 1. Comparison of Losses of Investment with Operation
Project Planning
Total Costs of Transformer plus Switchyard (10,000 Yuan)
Total Costs of Cables (10,000 Yuan)
Total Costs of Project (10,000 Yuan)
Total Annual Operating Costs
Traditional Planning A
119.6
80.0
199.6
13.1
Integrated Planning B
142.8
20.1
162.9
5.2
Ratio B/A(%)
119.4%
25.0%
81.6%
39.7%
NOTE 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 o.5 Yuan per kWh.
      3. The costs of cables from branch box to electricity meter box are not included.

 

Comprehensive Economic Evaluation of Energy Efficiency
 
5-Year Operating Costs (10,000 Yuan)
10-Year Operating Costs (10,000 Yuan)
Type of Planning
CI
199.6
199.6
CP
65.5
131
(CT=CI+CP)
CT
265.1
330.6
Integrated Planning
CI
162.9
162.9
CP
26
52.2
(CT=CI+CP)
CT
188.9
215.1
Ratio B/A(%)
71.3%
65.1%
NOTE: 1. The total annual operating costs are calculated by o.5 Yuan per kWh.
       2. CI, costs of equipments and main materials; CP, costs of losses; CT, total costs.


From the comparison above, integrated planning can be characterized as following:
1. The total project costs are 81.6% of those of the former planning, saving 36.7 (10,000 Yuan);
2. The total annual operating costs are 39.7% of those of the former planning;
4. The comprehensive efficiency evaluation of 5-year operating costs: CT can be saved by 265.1-188.9=76.2 (10,000 Yuan);
5. The comprehensive efficiency evaluation of 10-year operating costs: CT can be saved by 330.6-215.1=115.5 (10,000 Yuan);
6. The total project costs for 10-year operating are 162.9 (10,000 Yuan), saving 115.5 (10,000 Yuan).

 

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