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Energies 2017, 10(10), 1472; doi:10.3390/en10101472

Study on Nested-Structured Load Shedding Method of Thermal Power Stations Based on Output Fluctuations

Renewable Energy School, North China Electric Power University, Beijing 102206, China
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Author to whom correspondence should be addressed.
Academic Editor: Kamel Hooman
Received: 4 September 2017 / Revised: 18 September 2017 / Accepted: 19 September 2017 / Published: 23 September 2017
(This article belongs to the Special Issue Thermal Energy Storage and Thermal Management (TESM2017))
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Abstract

The balance of electric power and energy is important for designing power stations’ load distribution, capacity allocation, and future operation plans, and is thus of vital significance for power design and planning departments. In this paper, we analyzed the correlation between the output fluctuations of power stations and the load fluctuations of the power system in order to study the load change of the power system within a year/month/day, and the output variation amongst the power stations in operation. Reducing the output of hydropower stations or increasing the output of thermal power stations (TPS) could keep the monthly adjustment coefficient of the power system within a certain range, and thus balance the power system’s electric power and energy. The method for calculating the balance of electric power and energy of TPS is also improved. The nested-structured load shedding method (NSLSM), which is based on the calculation principle of the load shedding method, is put forward to iteratively calculate the peak shaving capacity and non-peak shaving capacity of every single thermal power station. In this way, the output process of each thermal power station can be obtained. According to the results and analysis of an example, the proposed methods of calculating monthly adjustment coefficients and the balance of electric power and energy of a thermal power station are validated in terms of correctness, feasibility, and effectiveness. View Full-Text
Keywords: balance of electric power and energy; monthly adjustment coefficient; fluctuations; thermal power station; nested-structured load shedding method (NSLSM) balance of electric power and energy; monthly adjustment coefficient; fluctuations; thermal power station; nested-structured load shedding method (NSLSM)
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Wang, L.; Liu, M.; Wang, B.; Wu, J.; Li, C. Study on Nested-Structured Load Shedding Method of Thermal Power Stations Based on Output Fluctuations. Energies 2017, 10, 1472.

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