Effectiveness of water resources use by the Angara-Enisei sequence of hydroelectric stations: Fid-Bau Portal

Effectiveness of water resources use by the Angara-Enisei sequence of hydroelectric stations

Ivanov, I. N. / Kurbatov, A. P.

Conclusions o| li]1.|The uniqueness of the hydroelectric stations of the Angara-Enisei sequence with respect to capacity, firm production, regime functions, and other technicoeconomic indices permits providing for a high effectiveness of one of the largest power systems of the country — the integrated power system of Siberia. li]2.|A further increase in power effectiveness of the water resources use on the Angara-Enisei sequence of hydrostations depends in many respects on solving the following problems: Preserving the role of Lake Baikal and the Bratsk reservoir as the main long-term flow regulators for power production in the entire Angara-Enisei sequence and reducing production losses during operation of the stations at low heads is essential. This makes necessary to solve the problem of limiting the use of their carryover capacity in compensating for under-production by thermal power stations, meeting the increasing requirements of navigation, covering the increase in power consumption as the start-up of new facilities lags behind, etc. For complete utilization of the regulating potentialities of Lake Baikal and the Bratsk reservoir it is necessary to solve the problems of restoring the design increase in the level of Lake Baikal by 0.5 m above the NPL in wet years and removing the restrictions on drawdown of the Bratsk reservoir to the design level. The increased requirements imposed by navigation on the Angara must be solved not by exceeding the design releases at the hydrostations but by reconstructing the existing fleet or replacing it by new vessels. When navigation releases exceed the design values it is necessary to solve the problem of compensating for the loss of power at the expense of water transport.