scholarly journals ANALISIS PERBANDINGAN KEBUTUHAN ENERGI MENGGUNAKAN BOILER FEED PUMP DAN MOTOR INDUKSI PADA KONDISI START UP (STUDY KASUS: PLTU TANJUNG JATI B UNIT 3)

2021 ◽  
Vol 11 (2) ◽  
pp. 637-645
Author(s):  
Safrizal Safrizal ◽  
Muhammad Sagaf
Keyword(s):  
Feed Pump ◽  
Auxiliary Power ◽  
Start Up

Kebutuhan energi listrik yang semakin meningkat tidak hanya diikuti dengan peningkatan pasokan energi listrik saja, tetapi harus diikuti dengan pengelolaan energi yang baik dan efisien. Salah satu caranya yaitu dengan mengurangi penggunaan energi sendiri (auxiliary power) pada pembangkit listrik. PLTU Tanjung jati B Unit 3, yang mempunyai 2 Boiler Feed Pump (BFP) dengan penggerak Turbin uap (Turbine Boiler feed Pump atau TBFP) dan 1 buah BFP dengan pengerak Motor Induksi (Motor Boiler feed Pump atau MBFP). Penelitian ini dilakukan perbandingan peralatan tersebut yang bekerja dengan kebutuhan energi paling minimal. Proses pengambilan data dilakukan pada kondisi start up, cold 12 jam, warm 6 jam, hot 2 jam. Dari hasil penelitian menunjukan, untuk kondisi start up cold 12 jam MBFP mempunyai tingkat konsumsi energi 54,8 MWh, sedangkan TBFP hanya mengkonsumsi energy 21,6 Mwh, atau sebesar 60.58 % dari jumlah energi yang digunakan oleh MBFP dan dapat menghemat biaya sebesar Rp  11.487.200,00. artinya TBFP mampu menghemat penggunaan energi 33,2 MWh atau setara 2.980 rumah berlangganan daya listrik PLN  1300 VA, konsumsi daya aktif rata-rata 11,14 kWh/day (33.200 kWh/11,14 kWh = 2980 unit rumah)

scholarly journals Method of coordinating air starter and auxiliary power unit joint operation

2020 ◽  
pp. 5-13
Author(s):  
Grigory Popov ◽  
◽  
Vasily Zubanov ◽  
Valeriy Matveev ◽  
Oleg Baturin ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Power Unit ◽  
Gas Turbine Engine ◽  
Working Process ◽  
Joint Operation ◽  
Turbine Engine ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Start Up ◽  
Air Turbine

The presented work provides a detailed description of the method developed by the authors for coordinating the working process of the main elements of the starting system for a modern gas turbine engine for a civil aviation aircraft: an auxiliary power unit (APU) and an air turbine – starter. This technique was developed in the course of solving the practical problem of selecting the existing APU and air turbine for a newly created engine. The need to develop this method is due to the lack of recommendations on the coordination of the elements of the starting system in the available literature. The method is based on combining the characteristics of the APU and the turbine, reduced to a single coordinate system. The intersection of the characteristic’s lines corresponding to the same conditions indicates the possibility of joint operation of the specified elements. The lack of intersection indicates the impossibility of joint functioning. The calculation also takes into account losses in the air supply lines to the turbine. The use of the developed method makes it possible to assess the possibility of joint operation of the APU and the air turbine in any operating mode. In addition to checking the possibility of functioning, as a result of the calculation, specific parameters of the working process at the operating point are determined, which are then used as initial data in calculating the elements of the starting system, for example, determining the parameters of the turbine, which in turn allow providing initial information for calculating the starting time or the possibility of functioning of the starting system GTE according to strength and other criteria. The algorithm for calculating the start-up time of the gas turbine engine was also developed by the authors and implemented in the form of an original computer program. Keywords: gas turbine engine start-up, GTE starting system, air turbine, methodology, joint work, auxiliary power unit, power, start-up time, characteristics matching, coordination, operational characteristics, computer program.

The Modeling and Simulation of Super-Capacitor in Diesel Engine Starting Process

2012 ◽  
Vol 229-231 ◽  
pp. 1967-1970
Author(s):  
Zhen Min Cui ◽  
Ru Wang
Keyword(s):  
Diesel Engine ◽  
System Modeling ◽  
Super Capacitor ◽  
Power Characteristics ◽  
Modeling Simulation ◽  
Auxiliary Power ◽  
Start Up ◽  
Instantaneous Discharge ◽  
Starting Process ◽  
Engine Start

Diesel engine; Super-capacitor; Starter system; Modeling; Simulation Abstract. In order to improve the start-up performance of the diesel engine and the working conditions of batteries, make efficient use of the high instantaneous discharge power characteristics of the super-capacitor as a diesel engine start-up auxiliary power. Taking the YC6J180 types of Yuchai diesel engine as illustration, diesel engine starting process was modeled and simulated by Matlab/Simulink software, and compared with the simulation model of diesel engine starting system added the super-capacitor. The simulation results show that the diesel engine starter system added the super-capacitor as the auxiliary power, the starting performance is improved significantly, meanwhile improve the battery state, and extend its service life.

Dynamic Modeling and Fuel Consumption Potential of an Intercooled Regenerative Reheat Gas Turbine Auxiliary Power Unit on Series Hybrid Electric Vehicle

2019 ◽  
Vol 142 (1) ◽  
Author(s):  
Wissam Bou Nader ◽  
Florent Breque ◽  
Youssef Mazloum ◽  
Clément Dumand ◽  
Maroun Nemer
Keyword(s):  
Gas Turbine ◽  
Fuel Consumption ◽  
Electric Vehicle ◽  
Power Unit ◽  
Hybrid Electric Vehicle ◽  
Energy Management Strategy ◽  
Auxiliary Power ◽  
Start Up ◽  
Series Hybrid Electric Vehicle ◽  
Hybrid Electric

Abstract Gas turbine systems are among potential energy converters to substitute the internal combustion engine in future series hybrid electric vehicle. Fuel consumption of these powertrains strongly relies on the energy converter efficiency, the energy management strategy deployed on-board as well as on the transient operation during start-up phase. This paper presents a dynamic modeling and the fuel consumption calculation of an intercooled regenerative reheat gas turbine system used as an auxiliary power unit on a series hybrid electric vehicle. A vehicle model is developed and an optimization method is proposed to optimize the powertrain operation. It consists of using the dynamic programing as an energy management strategy in order to minimize the fuel consumption and the number of switching On/Off of the power unit. Fuel consumption simulations are performed on the worldwide-harmonized light vehicles test cycle while considering the electric and the thermal comfort vehicle energetic needs. Then, a gas turbine dynamic model is developed, where turbomachinery and heat exchanger components are modeled by taking into account their dynamic inertias. The efficiency, the power, and the fuel consumption are calculated during transient operations. Based on the optimization results of switching ON and OFF the system, the fuel consumption dynamic simulation results are considered instead of the dynamic programming results. A constant power start-up strategy and a constant fuel strategy were investigated. Results show an increase in fuel consumption between 2.4% and 3.8% with the first start-up scenario and between 5.7% and 6.4% with the second scenario, compared with static model.

Start-up strategy and operational tests of gasoline fuel processor for auxiliary power unit

2015 ◽  
Vol 40 (11) ◽  
pp. 4101-4110 ◽  
Author(s):  
Hyunjin Ji ◽  
Joongmyeon Bae ◽  
Sungbaek Cho ◽  
Inyong Kang
Keyword(s):  
Power Unit ◽  
Fuel Processor ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Start Up ◽  
Operational Tests

Innovative Starting Procedure of Siemens SGT-600 in Cold Climate Conditions

2011 ◽  
Author(s):  
Mats Blomstedt ◽  
Ha˚kan Lindgren ◽  
Hans-Lennart Olausson ◽  
Johan Moverare
Keyword(s):  
Cold Climate ◽  
Control Logic ◽  
Climate Conditions ◽  
Ambient Temperatures ◽  
Auxiliary Power ◽  
Start Up ◽  
Critical Components ◽  
Hardware Costs ◽  
The Cost ◽  
Additional Hardware

A start-up of a gas turbine means that stress and forces are put on the machine. A start-up in cold climate conditions means that the forces are more critical since the material in the machine becomes more brittle. At a certain temperature the material is utilized to its limits (with appropriate margins applied) and for the SGT-600 ambient temperatures below −30°C (−22°F) become critical. In earlier installations in an arctic climate, an electric pre-heater has been utilized to prevent the critical components from becoming too brittle. This additional hardware costs money, is consuming auxiliary power and may contribute to unavailability. Another way to solve this issue may be to install material that is less brittle, but this will also increase the cost of the installation. Siemens is now applying an improved control logic during start-up, solving this issue in the software, without any additional hardware and avoiding unnecessary material changes. This new innovative start-up procedure is performing an automatic check of the stress levels before loading the machine, resulting in a safe and reliable start at temperatures below −30°C (−22°F).

Electrical start-up for diesel fuel processing in a fuel-cell-based auxiliary power unit

2016 ◽  
Vol 302 ◽  
pp. 315-323 ◽  
Author(s):  
Remzi Can Samsun ◽  
Carsten Krupp ◽  
Andreas Tschauder ◽  
Ralf Peters ◽  
Detlef Stolten
Keyword(s):  
Fuel Cell ◽  
Power Unit ◽  
Diesel Fuel ◽  
Fuel Processing ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Start Up

scholarly journals A Compact, Self-Sustaining Fuel Cell Auxiliary Power Unit Operated on Diesel Fuel

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5909
Author(s):  
Remzi Can Samsun ◽  
Matthias Prawitz ◽  
Andreas Tschauder ◽  
Stefan Weiske ◽  
Joachim Pasel ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Power Density ◽  
Power Unit ◽  
Diesel Fuel ◽  
Department Of Energy ◽  
Fuel Processor ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Start Up ◽  
Shift Reaction

A complete fuel cell-based auxiliary power unit in the 7.5 kWe power class utilizing diesel fuel was developed in accordance with the power density and start-up targets defined by the U.S. Department of Energy. The system includes a highly-integrated fuel processor with multifunctional reactors to facilitate autothermal reforming, the water-gas shift reaction, and catalytic combustion. It was designed with the help of process analyses, on the basis of which two commercial, high-temperature PEFC stacks and balance of plant components were selected. The complete system was packaged, which resulted in a volume of 187.5 l. After achieving a stable and reproducible stack performance based on a modified break-in procedure, a maximum power of 3.3 kWe was demonstrated in a single stack. Despite the strong deviation from design points resulting from a malfunctioning stack, all system functions could be validated. By scaling-up the performance of the functioning stack to the level of two stacks, a power density of 35 We l−1 could be estimated, which is close to the 40 We l−1 target. Furthermore, the start-up time could be reduced to less than 22 min, which exceeds the 30 min target. These results may bring diesel-based fuel cell auxiliary power units a step closer to use in real applications, which is supported by the demonstrated indicators.

scholarly journals Study on the Steam Source Selection of Feed Pump Turbine Based on Energy Matching

2021 ◽  
Vol 11 (1) ◽  
pp. 86
Author(s):  
Jiongming Wang ◽  
Feng Wang ◽  
Zhenglong Yu ◽  
Xiaochen Chen ◽  
Xiaojie Lin ◽  
...  
Keyword(s):  
Power Plant ◽  
Energy Utilization ◽  
Normal Operation ◽  
Utilization Rate ◽  
Feed Water ◽  
Feed Pump ◽  
Pump Turbine ◽  
Source Selection ◽  
Start Up ◽  
Flow Through

The first phase of a power plant has two subcritical 300 MW units, and each boiler feed water pump is equipped with two with 50% capacity steam driven feed pumps and one 50% capacity electric start-up feed pump. The two steam pumps are put into operation during normal operation. After the heat supply transformation in the unit of the first phase of this power plant and based on the calculation and analysis of the heat balance of the unit, it is found that there will be insufficient output of the feed pump due to the insufficient steam source after the flow-through transformation, which will affect the water supply of the unit and reduce the energy utilization rate. To avoid this, the steam source of feed pump turbine needs to be selected again. Taking the original steam turbine condition of feed pump and the original steam source of feed pump turbine as the research basis, this paper makes analysis on the steam source transformation, and concludes the scheme of steam source selection and reconstruction based on energy matching. The feasibility of the scheme is tested and verified finally.

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