scholarly journals Integrated Model of Economic Generation System Expansion Plan for the Stable Operation of a Power Plant and the Response of Future Electricity Power Demand

2018 ◽  
Vol 10 (7) ◽  
pp. 2417 ◽  
Author(s):  
Jang-yeop Kim ◽  
Kyung Kim
Keyword(s):  
Power Plant ◽  
Integrated Model ◽  
Stable Operation ◽  
System Expansion ◽  
Power Demand ◽  
Generation System ◽  
Expansion Plan ◽  
Electricity Power

The Study Summarize of Computational Method on Transition Process in Hydropower Units

2013 ◽  
Vol 457-458 ◽  
pp. 1531-1537
Author(s):  
Bi Ying Wu ◽  
Ning Tang ◽  
Shui Guang Tong
Keyword(s):  
Transient Process ◽  
Transition Process ◽  
Computational Method ◽  
Stable Operation ◽  
Calculation Methods ◽  
Generation System ◽  
Water Power ◽  
Optimization Study ◽  
Start Up ◽  
Power Generation System

In the operation of the hydropower units, it often come across condition changes such as start-up, normal stop, increase or decrease the load and load rejection. This will cause the hydraulic transient process of the water power generation system, which is of great significance to the safe and stable operation of hydropower station. This paper analyzes the method to calculate the transient process of hydropower unit and expounds the principle of all kinds of calculation methods and steps to lay a foundation for further optimization study.

scholarly journals Dynamic Optimization of a Subcritical Steam Power Plant under Time-Varying Power Load

2018 ◽  
Author(s):  
Chen Chen ◽  
George M. Bollas
Keyword(s):  
Power Plant ◽  
Dynamic Optimization ◽  
Electricity Market ◽  
Optimization Problems ◽  
Optimal Time ◽  
Time Varying ◽  
Power Demand ◽  
Test Bed ◽  
Simulation And Optimization ◽  
Power Load

The increasing variability in power plant load, in response to a wildly uncertain electricity market and the need to to mitigate CO2 emissions, lead power plant operators to explore advanced options for efficiency optimization. Model-based, system-scale dynamic simulation and optimization are useful tools in this effort, and the subject of the work presented here. In prior work, a dynamic model validated against steady-state data from a 605 MW subcritical power plant was presented. This power plant model is used as a test-bed for dynamic simulations, in which the coal load is regulated to satisfy a varying power demand. Plant-level control regulates plant load to match an anticipated trajectory of the power demand. The efficiency of the power plant operating at varying load is optimized through a supervisory control architecture that performs set point optimization on the regulatory controllers. Dynamic optimization problems are formulated to search for optimal time-varying input trajectories that satisfy operability and safety constraints during the transition between plant states. An improvement in time-averaged efficiency of up to 1.8% points is shown feasible with corresponding savings in coal consumption of 184.8 tons/day and carbon footprint decrease of 0.035 kg/kWh.

scholarly journals Effect of Grid Instability on Power Generation System's Reliability

2020 ◽  
pp. 27-37
Author(s):  
Joseph Benedict Bassey ◽  
Isaac F. Odesola
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Failure Rate ◽  
System Reliability ◽  
Power Distribution ◽  
Power Plants ◽  
Time To Failure ◽  
Generation System ◽  
Reliability Indices ◽  
Mean Time

Aims: Reliability assessment of power generation system may be performed with the concept of system adequacy, security or both. Grid being a major component in the power distribution chain is seen to have some influence on the state of the generation system reliability because of the perturbation that may arise from it. In this study, the generation system reliability is evaluated using both the system adequacy and security concept. Study Design: To capture the system security problems attributed to grid disturbance, the generation system is structured into two component systems (1 - generation component and 2 - transmission component) with a series arrangement. Methodology: The reliability indices such as, mean time to failure, mean time to repair, failure rate and repair rate are assessed on component bases and with respect to the entire generation system. Results: The effect of failure rate of the transmission component on the entire generation system failure rate was evaluated as 66.25%, 55.55%, 33.33%, 55.00% and 35.72% in year 2013, 2014, 2017 2018 and 2019 respectively for FIPL Power Plant and 52.94%, 82.35%, 61.38% and 100% effect was evaluated in the year 2016, 2017, 2018 and 2019 respectively for GT5 of Omoku Power Plant. Conclusion: These results showed that there is a significant influence of grid disturbances on the reliability state of the two gas turbine power plants in Nigeria. Measures on possible reliability state improvement of the power generation systems were suggested to include training and retraining of technical personnel on the management of major equipment in the generation and transmission stations. 

scholarly journals Expansion Planning of Electricity Generating System Using the VALORAGUA and WASP-IV Models in Nepal

2016 ◽  
Vol 19 ◽  
pp. 45-51 ◽  
Author(s):  
Jayandra Prasad Shrestha ◽  
Namrata Tusuju Shrestha
Keyword(s):  
Early Stage ◽  
Generation System ◽  
Expansion Planning ◽  
Long Run ◽  
Hydropower Plants ◽  
Expansion Plan ◽  
National Power ◽  
Generation Capacity ◽  
And Storage ◽  
Generating System

This paper presents a framework for a possible expansion plan of Nepal’s electricity generation system using VALORAGUA and Wien Automatic System Planning (WASP-IV) models as examples. Given that Nepal seeks to add several hydropower plants to the Integrated National Power System (INPS) in the next few years, this type of planning is crucial. To explore potential expansion plans, the 48 hydropower plants (20 of which are currently operating) within 18 hydro networks and two diesel plants are included, and different options such as the possibility of export, seasonal variations in hydrology, and projected growth rates in gross domestic product are considered. The results illustrate the long run marginal cost (LRMC) and loss of load probability (LoLP) through 2030 in Nepal. It is found that LRMC is 3.50 Nepali Rupees per kilowatt hour at 4.1% of average LoLP. While scrutinizing the results, it is found that LoLP is higher in early stage of projections due to generation capacity limitations from 2014 to 2016. However, by the end of 2017, the LRMC and LoLP begin to decrease significantly. On this premise, the model suggests to introduce large storage plants for hydropower generation and export of that excess energy. Furthermore, a proper implementation of proposed peaking and storage plants to meet rising demand can offset the need to obtain electricity through more expensive and less environmentally-friendly means such as thermal/diesel plants.HYDRO Nepal JournalJournal of Water, Energy and EnvironmentIssue: 19Page: 45-51

Dynamic simulation of a solar power plant steam generation system

2013 ◽  
Vol 33 ◽  
pp. 2-17 ◽  
Author(s):  
Thibault Henrion ◽  
Karl Ponweiser ◽  
Dirk Band ◽  
Thomas Telgen
Keyword(s):  
Power Plant ◽  
Dynamic Simulation ◽  
Solar Power ◽  
Solar Power Plant ◽  
Steam Generation ◽  
Generation System

Risk Assessment of Relay Protection Setting Value in Power Plant

2013 ◽  
Vol 373-375 ◽  
pp. 1345-1348 ◽  
Author(s):  
Zong Jiang Mu ◽  
Yan Xu ◽  
Shao Bo Yan
Keyword(s):  
Risk Assessment ◽  
Power Plant ◽  
Potential Risk ◽  
Risk Evaluation ◽  
Evaluation Method ◽  
Relay Protection ◽  
Stable Operation ◽  
Protection Device ◽  
Safe Operation ◽  
Risk Assessment And Analysis

Power plant relay protection setting value of the hidden harm causes of relay protection device is not correct, safe and stable operation of the power plant. In this paper, from the angle of the safe operation of power plant, the hidden danger to plant with the protection setting is studied and then the risk evaluation method of power plant relay protection setting values of hidden trouble is proposed. From the power plant relay protection setting value considering two aspects of probability and consequences of potential outbreak of different values, value potential risk is considered, and of a certain power plant in Hubei was made the risk assessment and analysis, in order to verify the theoretical rationality and accuracy.

Optimization of FengTai Power Plant 350MW Supercritical Unit Water Supply RB Control Strategy

2011 ◽  
Vol 130-134 ◽  
pp. 2527-2529
Author(s):  
Jin Tao Guo ◽  
Jiang Xin
Keyword(s):  
Power Plant ◽  
Water Supply ◽  
Control Strategy ◽  
Inner Mongolia ◽  
Power Grid ◽  
Supply System ◽  
Stable Operation ◽  
Pressure Curve ◽  
Sliding Pressure ◽  
Safety Range

The improvement of RB is significant for safety of both the power plant and power grid. This paper, took the 2 × 350MW unit of Inner Mongolia Huaneng Power Plant for instance, researched on three ways to improve water supply RB, like taking a proper sliding pressure curve, improving the water supply system and optimizing the boiler combustion. In the research, we succeeded to maintain main parameters of the unit within a safety range during RB operation, and avoided a unit trip accident causing by one single pump’s fault trip. Therefore, the research’s success settled a good base for the unit’s safe and stable operation.

Sign in / Sign up

Export Citation Format

Share Document