A new approach for maintenance scheduling of generating units in electrical power systems based on their operational hours

نویسندگان

  • Mohammad Fattahi
  • M. Mahootchi
  • H. Mosadegh
  • F. Fallahi
چکیده

Generator maintenance scheduling (GMS) determines the outage periods of generating units in a oneyear or two-year planning horizon for regular safety inspection. This paper introduces a new practical GMS for centralized electrical power systems in which, in contrary to previous studies, the outage periods are scheduled based on operational hours of units. Predefined minimum and maximum operating hours of units after a maintenance outage define the beginning and ending of their maintenance windows, respectively. In addition, unit commitment (UC) as a short-term planning is considered in the GMS with hourly time scale. Therefore, this problem becomes more complex than periodic maintenance scheduling. In this paper, a novel mixed-integer linear programming (MILP) model for the problem is developed. However, due to the problem intractability, two different solution algorithms on the basis of ant colony optimization (ACO) and simulated annealing (SA) are extended for the GMS problem. Both algorithms use some developed heuristics and feasibility rules, namely UC heuristic, for solving the UC problem. Numerical results indicate that the solution algorithms perform well compared to the exact solution of the MILP model obtained using CPLEX solver. Also, the solution algorithms as well as the UC heuristic are examined carefully. To demonstrate the performance of the proposed algorithms, two test systems containing 26 and 36 generating units are investigated. & 2014 Elsevier Ltd. All rights reserved.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

An adaptive modified firefly algorithm to unit commitment problem for large-scale power systems

Unit commitment (UC) problem tries to schedule output power of generation units to meet the system demand for the next several hours at minimum cost. UC adds a time dimension to the economic dispatch problem with the additional choice of turning generators to be on or off.  In this paper, in order to improve both the exploitation and exploration abilities of the firefly algorithm (FA), a new mo...

متن کامل

Resource Scheduling in a Smart Grid with Renewable Energy Resources and Plug-In Vehicles by MINLP Method

This paper presents a formulation of unit commitment for thermal units integrated with wind and solar energy systems and electrical vehicles with emphasizing on Mixed Integer Nonlinear Programming (MINLP). The renewable energy resources are included in this model due to their low electricity cost and positive effect on environment. As well as, coordinated charging strategy of electrical vehicle...

متن کامل

برنامه‌ریزی همزمان انرژی و ذخیره‌ کنترل فرکانس اولیه با لحاظ کردن قابلیت‌های فنی واحدهای نیروگاهی پیشرفته

Load frequency control includes the operating system and functions that provide real time balance of load and generation. On the other hand, depending on technical capabilities and operational constraints, generating units may be classified for participating in frequency control. Simultaneous scheduling of generation together with primary reserve, in market based power system, has been investig...

متن کامل

Optimal Scheduling of CHP-based Microgrid Under Real-Time Demand Response Program

Microgrid (MG) is considered as a feasible solution to integrate the distributed energy sources. In this paper, optimal scheduling of a grid-connected MG is investigated considering different power sources as combined heat and power (CHP) units, only power and heat generating units, and battery storage systems. Two different feasible operating regions are considered for the CHP units. In additi...

متن کامل

Long Term Cost Effective Preventive Maintenance Scheduling

Preventive maintenance scheduling of generating units is addressed as a long-term scheduling in power system studies aiming to increase the reliability incorporating cost reduction. It consists of knowing which generating units should be shut down for regular safety inspection. In this paper, a new formulation of preventive maintenance scheduling associated with cost reduction index (CRI) is pr...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Computers & OR

دوره 50  شماره 

صفحات  -

تاریخ انتشار 2014