Primary control reserve of electric power by feedwater flow rate change through an additional economizer – A case study of the thermal power plant “Nikola Tesla B”

Stevanović, Vladimir D.; Ilić, Milica; Djurović, Željko; Wala, Tadeusz; Muszynski, Slawomir; Gajic, I.

doi:10.1016/j.energy.2018.01.102

Cited by 19 publications

(4 citation statements)

References 19 publications

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“…TPP Nikola Tesla A and TPP Nikola Tesla B are the two plants that make up the complex. Six generating units at TPP Nikola Tesla A have a capacity of 1650.5 MW, while two generation units at TPP Nikola Tesla B, which is situated 17 km upstream of TPP Nikola Tesla A, have a capacity of 1240 MW [ 33 , 34 ].…”

Section: Methodsmentioning

confidence: 99%

Spatial Variability of Rare Earth Elements in Groundwater in the Vicinity of a Coal-Fired Power Plant and Associated Health Risk

Vesković,

Lučić,

Ristić

et al. 2024

Toxics

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This study investigated the occurrence and distribution of rare earth elements (REEs), including 14 lanthanoids, scandium (Sc), and yttrium (Y), in groundwater around a large coal-fired thermal power plant (TPP). The ICP-MS technique was used to analyze 16 REEs in groundwater samples collected from monitoring wells. REE concentrations ranged from 59.9 to 758 ng/L, with an average of 290 ng/L. The most abundant was Sc, followed by La, accounting for 54.2% and 21.4% of the total REE concentration, respectively. Geospatial analysis revealed the REE enrichment at several hotspots near the TPP. The highest REE concentrations were observed near the TPP and ash landfill, decreasing with the distance from the plant and the landfill. REE fractionation ratios and anomalies suggested the Light REE dominance, comprising over 78% of the total REEs. Correlation and principal component analyses indicated similar behavior and sources for most REEs. Health risk assessment found hazard indices (HI) of 1.36 × 10−3 and 1.98 × 10−3 for adults and children, respectively, which are far below the permissible limit (HI = 1). Likewise, incremental lifetime cancer risks (ILCR) were all below 1 × 10−6. Nevertheless, ongoing ash disposal and potential accumulation in the environment could elevate the REE exposure over time.

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Section: Methodsmentioning

confidence: 99%

Spatial Variability of Rare Earth Elements in Groundwater in the Vicinity of a Coal-Fired Power Plant and Associated Health Risk

Vesković,

Lučić,

Ristić

et al. 2024

Toxics

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“…MGs are not a new concept, if the previous definition is rigorously followed, the first MG could be historically framed in 1881 with the first electrical power generation facility by Thomas Edison in Pearl Street, Manhattan [31]; However, the concept of isolating and keeping a low voltage distribution network in operation in the event of a failure upstream of the Low Voltage / Medium Voltage (LV/MV) transformer, is a concept closer to MG originated by Nikola Tesla [32].…”

Section: Methodologies Investigations and Strategies Of Microgrides (Mg)mentioning

confidence: 99%

Optimal planning of hybrid renewable energy systems using HOMER: A review

Bahramara

Moghaddam

Haghifam

2016

Renewable and Sustainable Energy Reviews

545

186

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This degree project studies the island mode microgrids or isolated microgrids of the National Interconnected System (SIN, for its acronym in Spanish) as an alternative to supply the energy demand of users located in rural areas designated as Non-Interconnected Zones (ZNI), for its acronym in Spanish) of the department of Cauca in Colombia.The motivation for the project arises from understanding a social problem and wanting to find a solution through renewable energy resources that is reliable, economically viable and efficient for the environment.

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“…It can be found that by changing the energy storage on the turbine side, the main steam temperature and pressure of the power plant can be quickly adjusted, thus improving the load change rate, that is, the regulation capability to AGC instruction. The main steam temperature and pressure of the turbine are ultimately affected by boiler side parameters, such as the coal feed rate, air supply rate, and feedwater flow rate (Stevanovic et al, 2018;Wang Y. et al, 2019;Yin et al, 2022). Therefore, this paper considers the construction of multi-stage sub-models to describe the AGC regulation capability.…”

Section: Introductionmentioning

confidence: 99%

AGC regulation capability prediction and optimization of coal-fired thermal power plants

Jin,

Hao,

Zhang

et al. 2023

Front. Energy Res.

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The improvement of the AGC regulation capability of thermal power plants is very important for the secure and stable operation of the power grid, especially in the situation of large-scale renewable energy access to the power grid. In this study, the prediction and optimization for the AGC regulation capability of thermal power plants is proposed. Firstly, considering parameters related to the AGC regulation of the thermal power plant, the max-relevance and min-redundancy (mRMR) is used to extract features from historical sequences of the parameters. Next, a model with multi-long short-term neural networks (mLSTM) is constructed to predict the AGC regulation capability; that is, the obtained feature set is considered as the inputs of the first LSTM sub-model to predict future values of the main steam pressure and main steam temperature, which are then utilized as the inputs of the second LSTM sub-model to predict the actual power generation during AGC regulation operation. Then, the AGC regulation index is calculated according to the “management rules of grid-connected operation of power plant in Northern China” and “management rules of auxiliary service of the grid-connected power plant in Northern China” (i.e., “two rules”), and it is then considered as the objective function to be maximized by optimizing the coal feed rate, air supply rate, and feedwater flow rate. Finally, the actual AGC regulation process of a 300 MW coal-fired power plant is used as an application, and the results show that the proposed method can effectively predict and improve the regulation capability when the AGC instruction is received from the power grid.

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Primary control reserve of electric power by feedwater flow rate change through an additional economizer – A case study of the thermal power plant “Nikola Tesla B”

Cited by 19 publications

References 19 publications

Spatial Variability of Rare Earth Elements in Groundwater in the Vicinity of a Coal-Fired Power Plant and Associated Health Risk

Spatial Variability of Rare Earth Elements in Groundwater in the Vicinity of a Coal-Fired Power Plant and Associated Health Risk

Optimal planning of hybrid renewable energy systems using HOMER: A review

AGC regulation capability prediction and optimization of coal-fired thermal power plants

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