Introduction;

CGR №1. Determination of the annual electricity demand of a given region:

- construction of winter and summer daily diagrams of electrical load of the power system;

- determination of the maximum power capacity of the power system's power plants and selection of the main equipment at various types of stations to cover the region's load.

CGR №2. Ownership of the power plant (ES), selling prices and tariffs:

- determination of the share of power stations in covering the schedule of loads of the energy system and the construction of daily working schedules for EPO;

- calculation of the cost of electricity production at various types of stations;

- determination of EPO selling prices and forecast tariffs for electricity transmission and distribution services in the national electric grid (NES) and regional electric grid companies (RECs).

4 Calculation and graphic work 2

Power stations and blocks	Given power, МВт
HPS
HPS №1	67
HPS №2	44
Sum OF N HPS	111
TPS
TPS №1	204
TPS №2	153
TPS №3	153
Sum OF N HPC	510
CPS
CPS №1	648
CPS №2	432
SUM OF N CPS	1080

4.1. ES equity participation, selling prices and tariffs

 For HPPs, the main component of costs is depreciation, which we assume to be 40%. Having found the depreciation, we find the remaining costs, respectively, equal to 60%.

Cost of production at HPPs

depreciation costs;

other costs (wages).

Capital expenditures for HPPs

unit costs for HPPs;

continuously output power.

К_гэс1=1200*337*67*10⁶= 27094800*10⁶

К_гэс2=1500*337*44*10⁶= 22242000*10⁶

Table 4.1 - Specific capital costs for 1 кВт

$	1200	1500
Tenge	404400	505500
Course to the Tg $	337	337

Cost of depreciation

the norm of annual costs for depreciation and maintenance of networks, we accept 3%.

Z_am=27094800*10⁶*0,03=812844*10⁶

Z_am=22242000*10⁶*0,03=667260*10⁶

The cost of electricity at HPPs

_где total costs per day (wages / 365 days a year)

_{Wгэс1= 67000*4=268000}

_{Wгэс1=67000*0,1*24=160800}

_{∑ Wгэс1=428800}

_{Wгэс2=44000*4=176000}

_{Wгэс2=44000*0,1*24=105600}

_{∑ Wгэс2=281600}

_{Amortization costs per day:}

_{Zгэс1=812844*106/365=2226.97*106}

_{Zгэс2=667260*106/365=1828.11*106}

_{Costs for depreciation:}

_{ГЭС1=5193.49 tg/kWh}

_{ГЭС2=6491.86 tg/kWh}

_{Total costs:}

_{Zгэс1=2226.97*106/0,4=5567.43*106}

_{Zгэс2=1828.11*106/0,4=4570.28*106}

_{Cost price:}

_{Sгэс1=5567.43*106/4.28800=1298.38 tg/kWh}

_{Sгэс2=4570.28*106/2.81600=1622.97 tg/kWh}

_Cost:

_{Цгэс1=1,1* Sгэс1=1298.38*1,1=1428.22 tg}

_{Цгэс2=1,1* Sгэс2=1622.97*1,1=1785.27 tg}

_{Table 4.2 - Results of cost indicators for HPPs}

Calculation self.\ P.P.	HPP 1	HPP 2
Power of HPP1, МВт	67	44
Constant given power, МВТ	6.7	4.4
Specific capital costs, tenge	404400	505500
Capital expenditures, tenge	27094800*106	22242000*106
Costs for depreciation, tenge	812844*106	667260*106
Expenses for other expenses, tenge	3362990.4*106	2802492*106
Cost, tenge	1298.38	1622.97

The average specific fuel consumption per unit produced by power plants, кг. у.т./кВт∙ч.

For the CHP plant, the efficiency factor is taken to be 0.4-0.5 regardless of the time of day - the CHP covers the base part of the load schedule and operates in a conditionally-continuous power delivery mode. Since IES operates in the load-schedule control mode, then, correspondingly, over the course of a day, the IES efficiency changes. Thus, in the zone of the failure of the KES efficiency, it is assumed to be 0.3, and in the peak 0.4.

Natural fuel consumption

_{, To simplify the calculations, let's assume that the fuel cost component is 50%. Then the total cost price}

_{The cost price of fuel (taking into account the price of ex-consumer)}

Calculation of the cost of electricity production at TPP 1

Calculation of the cost of electricity production at TPP 2,3

Calculation of the cost of electricity production at CPS 1

Calculation of the cost of electricity production at CPS 2

Further calculations are carried out in a similar way, the results are summarized in Table 4.3.

Table 4.3 - Forecast sale prices from tires

Selling price	тенге/кВт ч
HPP 1	12983.73
HPP 2	16228.69
TPP 1	3,82
TPP 2	4,774
TPP 3	4,774
CPP 1	6,36
CPP 2	4,774