Optimization of long-term modes of hydropower plants of the energy system of Tajikistan

Sekretarev, Y. A.; Sultonov, Sh.; Nazarov, Muso

doi:10.1109/icieam.2016.7911428

Cited by 11 publications

(3 citation statements)

References 4 publications

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“…The indifference curve in relative units for the high-water period is illustrated in Figure 7. According to the developed methodology, it is necessary to plot the incremental water rate characteristics for a given structure of operating equipment at the HPP for each optimization interval, which is a month or a decade for the period of filling the HPP reservoir [26]. To verify the operability of the proposed model, the simplified HPP operating modes were used, in particular, seasonal periods of the year is shown in Figure 8.…”

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confidence: 99%

Determination of the price for a hydro resource with consideration of operating conditions of hydropower plants using complex criteria of profit maxmization

Myatezh

Sekretarev

2021

IJECE

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<span>In this paper, a universal method has been developed to determine the price of a hydro resource (one cubic meter) for the operational regulation of a hydropower plant (HPP), which is a combination of an optimization method and a method for assessing the marginal utility. The proposed approach is based on the correct representation of differential incremental rate characteristics of water at an HPP and fuel at a thermal power plant (TPP). To know the price of a hydro resource used for electricity generation at a hydropower plant. This gives the possibility to increase the efficiency of management both at a hydropower plant, and in a water utilization system as a whole. Using the examples of Novosibirsk HPP, it is expected to develop an estimation of economic effect from the implementation of the developed criteria, the proposed method of the calculation of a hydro resource price at HPP, and the method of separating fuel costs at CHPP. As a result of the implementation the developed method for the HPP, a price of electricity sold in the flexible energy market will be compared to the price of the electricity produced and sold at CHPP, being equal to approximately 330 rubles/MW h.</span>

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confidence: 99%

Determination of the price for a hydro resource with consideration of operating conditions of hydropower plants using complex criteria of profit maxmization

Myatezh

Sekretarev

2021

IJECE

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“…Водные ресурсы играют важную роль в экономии первичных энергетических и материальных ресурсов на входе в техническую систему, а в конечном итоге в снижении вредного воздействия на человека и окружающую природную среду [5,6]. Общим правилом является следующее: выгоднее экономить энергетические и материальные ресурсы в процессе реализации технологических процессов, как можно ближе к конечным участкам, т.е 1 кВт•ч энергии в руб лях стоит в конце технологической цепочки намного больше, чем в начале [7].…”

Section: математическая модель определения стоимости гидроресурса на гэсunclassified

Technique of Hydrothermal Power System Balance Calculation with Allowance for the Regime Features of a Hydropower Station Based on the Cost of a Hydraulic Resource

Sekretarev¹,

Myatezh²

2021

J. Sib. Fed. Univ. Eng. technol.

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The present paper proposes a universal method for analyzing the efficiency of technical systems using the combination of an optimization method and a method of marginal utility evaluation. At present, the problem of optimal load distribution in the power system between a hydropower plant (HPP) and thermal power plants (TPP) is solved using the equality of the differential incremental rate characteristics of fuel consumption at TPP and water consumption at HPP by the Lagrangian multiplier method. In this case, the number of iterations can be five or more. The proposed approach is based, first of all, on the correct representation of the differential characteristics and calculation of a hydro resource price for the operational control of the HPP. Based on the comparison of water volume at a HPP and fuel amount at combined heat and power plants (CHPP) used for generation of 1 kW power, it is possible to determine a water price for a HPP. Using the examples of Novosibirsk HPP and CHPP, it is expected to develop an estimation of economic effect from the implementation of the developed criteria, the proposed method of determination of a water price at HPP. As a result of implementing the developed method for the HPP, a price of sold electricity in the flexible energy market will be comparable with the price for sold electricity produced at CHPPs, being equal to approximately 12 rubles/kW∙h

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“…Bolj kot z zadrževanjem vodne mase v akumulacijah je na preoblikovanje in potovanje poplavnih valov mogoče vplivati z aktiviranjem poplavnih površin v pravi fazi dogodka. V literaturi objavljene študije optimiziranja delovanja HE so izdelane s poudarkom na proizvodnji električne energije in ekonomike delovanja objekta, pri čemer ne obravnavajo poplavne problematike (Sakr et al, 1985;Popa et al, 2010;Sekretarev et al, 2016;Parvez et al, 2019).…”

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Optimization of HPPs chain operation on the Lower Sava during flood events

Rak

Brenčič²

2019

Acta Hydrotechnica

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A complex combination of influencing factors and extensive planned interventions must be considered when planning hydropower production. In addition to electricity production, the main goal is conservation of the run-off regime and conservation or mitigation of flood risk in an affected area. Besides the design of interventions and structures important for HPP operating and other accompanying measures into a considered area, the appropriate operation of an individual HPP and HPPs chain as a whole contributes significantly to achieving the desired goals during high waters. This paper presents an optimization of the HPP chain operation on the section of Sava River between Radeče and state border with the Republic of Croatia. The approximately 60-km long, substantially urbanized section of the Lower Sava, where construction of a chain of six run-of-the-river HPPs is in its finals stages, had to meet a number of requirements to improve or at least conserve the same level of flood risk and run-off regime on the border with the Republic of Croatia, defined by interstate agreement. In order to meet the requirements, we determined a uniform operating procedure of HPP chains during flood events that ensures the conservation of flood-wave characteristics along the chain of HPPs, while meeting the requirements of other stakeholders in this influential area. We showed with hydraulic analysis that the shape of the flood wave and its peak discharge can be conserved, but it is not possible to conserve natural flood-wave propagation time along the chain of HPPs.

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Optimization of long-term modes of hydropower plants of the energy system of Tajikistan

Cited by 11 publications

References 4 publications

Determination of the price for a hydro resource with consideration of operating conditions of hydropower plants using complex criteria of profit maxmization

Determination of the price for a hydro resource with consideration of operating conditions of hydropower plants using complex criteria of profit maxmization

Technique of Hydrothermal Power System Balance Calculation with Allowance for the Regime Features of a Hydropower Station Based on the Cost of a Hydraulic Resource

Optimization of HPPs chain operation on the Lower Sava during flood events

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