Dynamic Load Scheduling Optimization of Power Plants
نویسندگان
چکیده
In this paper a Mixed Integer Dynamic Optimization (MIDO) framework is exploited for combined Unit Commitment and Economic Load Scheduling (UCELS) optimization of power plants. Economic load scheduling optimization problem is formulated as a Dynamic Optimization (DO) problem that allows us to optimize the plant operations by taking into account the time varying dynamics. Dynamic optimization problem together with the switching (on/off) states of the generating units as binary decision variables is formulated as MIDO problem. Load scheduling optimization of a power plant is carried out with the objective of minimizing a cost function that includes fuel cost, emission cost, start-up cost, shutdown cost, equipment ageing cost and penalty cost for not meeting load demand. Typical constraints for the optimization problem that are considered here include ramping constraints, minimum and maximum load constraints associated with the power plant units e.g., gas turbine, boilers, steam turbine, etc. MIDO problem thus formulated is solved using the dynamic optimization tool equipped with a Mixed Integer Linear Programming (MILP) solver. Models for the power plant units are developed using the object oriented modeling language, Modelica. In this study, a typical Combined Cycle Power Plant (CCPP) and Fossil Fired Power Plant (FFPP) configuration is considered for the verification of load scheduling optimization solutions for different scenarios. Keywords—Load scheduling; Power plant; MIDO; CCPP; FFPP
منابع مشابه
A Multi-Objective Economic Load Dispatch Considering Accessibility of Wind Power with Here-And-Now Approach
The major problem of wind turbines is the great variability of wind power production. The dynamic change of the wind speed returns the quantity of the power injected to networks. Therefore, wind–thermal generation scheduling problem plays a key role to implement clean power producers in a competitive environment. In deregulated power systems, the scheduling problem has various objectives than i...
متن کاملOptimal Short-Term Scheduling of Multi-Chiller Plants Considering Energy Requirement of Cooling Towers, Pumps and Chillers
During extremely hot summer days, air conditioning systems are known as major electricity consumers in residential, commercial and industrial sectors. Moreover, high energy requirement of multiple-chiller plants may cause an interconnected power grid be faced with annual on-peak electrical demand, load-generation mismatch, voltage collapse and catastrophic wide area blackout. Therefore, this pa...
متن کاملWind Energy Uncertainties in Multi-objective Environmental/Economic Dispatch Based on Multi- objective Evolutionary Algorithm
This paper a Multi-objective Honey Bee Mating Optimization (MOHBMO) is proposed for Environmental/ Economic Power Dispatch (EED) problem. This paper proposes a new environmental/economic load dispatch model that considers cost and emission function coefficients with uncertainties and the constraints of ramp rate. Due to the environmental concerns that arise from the emissions produced via fossi...
متن کاملDay-ahead economic dispatch of coupled desalinated water and power grids with participation of compressed air energy storages
Nowadays, water and electricity are closely interdependent essential sources in human life that affect socio-economic growth and prosperity. In other words, electricity is a fundamental source to supply a seawater desalination process, while fresh water is used for cooling this power plant. Therefore, mutual vulnerability of water treatment and power generation systems is growing because of inc...
متن کاملConstrained Elitist Genetic Algorithm for Economic Load Dispatch: Case Study on Nigerian Power System
The Economic Load Dispatch problem concerns the determination of the optimal combination of power generators’ outputs with the lowest generation cost for a defined level of load. The problem arises from the fact that there are rated limits of generators’ power output, fuel costs of power plants are different, energy should be balanced, and plants are not located at the same distance from load c...
متن کامل