Polozhiy, S.

Electronic Sumy State University Institutional Repository

GROUNDING OF ECOLOGICAL AND ECONOMICAL OPERATING EFFICIENCYOF HYDROELECTRIC POWER PLANTSvitlana Polozhiy		  Sumy State University, Sumy, Ukraine  		“Word lives and respires and we can perceive this breathing!”								M. FichinoHydroenergetics is power engineering industry which has minimum affect on environment using water as resource. However, it has also negative affect; namely, flooding of areas, siltation of water resources, reformation of banks and bottoms, change of biological life in the area of water storage ponds, mass destruction of plankton, people disease incidence as a consequence of poor quality water using. Most of power-producing facilities have complex application, also ensuring water supply, irrigation, improvement of navigation conditions, flood protection, needs in fishing industry, recreation, etc. Therefore, complex character of facilities is taken into consideration when grounding the economic efficiency. In order to prove effectiveness of hydroelectric power plant calculations were done. Kyiv hydroelectric power plant located on the Dnypro River was taken as test object. Based on plant and similar structures data, ecological, economical effect and effectiveness of its functioning was calculated.Specified investments were defined as per rated power and annual average power generation:      and      ,where  - specified investments;          - general investments expended for power engineering;            - rated power, kW (Kyiv hydroelectric power plant is equipped with horizontal submerged hydroelectric units: 4 hydroelectric units with power 16,3 MW, three of them have power 22 MW after updating, and 16 hydroelectric units have single-unit power 18, 5 MW, three of them have power 22 MW after updating. Thus, total power of Kyiv hydroelectric power plant is 388 MW);           Э - annual average power generation, kJ · year (for Kyiv hydroelectric power plant it makes 797 millions kW · year with heads 7,7 – 9,3 m).Specified capital investment has been calculated on the basis of construction of similar hydroelectric power plant in China taking into account heads and power of this structure. Expenses estimate for plant construction amounted 6,74 billion USD (capacity is12,6 GW), so expenses estimate for our  facility is 0,2 billion USD.Specified capital investment for Kyiv hydroelectric power plant is 2,45  copecks for 1 kW/h, while population pay 24,36 copecks  for 1 kW/h.  Not only capital investment  pertain to sum of investment but  expenses for construction of  bank reinforcement dam of approximately  3 million 331,9  thousands UAH  and  budgeted cost for  providing  excavation  and  replanting of rare  breeds of plants for  creation of preserved coastal area  of 22 million UAH.According to calculations sales revenue of Kyiv hydroelectric power makes 23,848 billion UAH per year, expenditures make 7,226 billion UAH.  Average annual effect of hydroelectric power plant functioning is 87 billion UAH.Efficiency of hydroelectric power plant functioning exceeds class one proving   high ecological and economic efficiency of Kyiv hydroelectric power plant functioning.

Grounding of ecological and economical operating efficiency of hydroelectric power plant

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