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This paper presents a proposed cuckoo search algorithm with interactive learning and linear decreasing probability strategy (CSIL) to solve the economic dispatch problem with power balance, prohibited operating zones, valve point effect, and ramp rate. In the new approach, interactive learning strategy helps the nest to exchange good information from each other. Meanwhile, the linear decreasing probability...
This paper studies the 2013 10-year plan of the Western Electricity Coordinating Council (WECC), and its ability of meeting the emission rate standards for existing power plants proposed by the US Environmental Protecting Agency (EPA) in June 2014. The study represents a 10-year generation planning study. A reduced 240-bus WECC system is used as a test model, and is built on MATPOWER Software. Future...
Phenomenal increase in load and cost of electricity has raised many challenges ranging from security of the system to the economics of generation. For economic operation of power system, the solution to Unit Commitment problem is necessary. Unit Commitment aims to schedule the power generation to meet the load demands at the most economical rate for the next few hours. It decides that which unit should...
As a result of the NERC analysis of the 2003 blackout, NERC has proposed “voltage ride through” criteria that have resulted in two standards. Transmission line protection loadability and low voltage “ride through” has been addressed in Standard PRC-023-2. NERC PRC-025-1 addresses loadability of power plant protection and is much more complicated to apply than the transmission loadability requirements...
Programmable Logic Controllers (PLCs) are widely used to implement safety-critical systems and therefore software in PLCs requires thorough testing. Some software in PLCs is written in graphical data flow languages such as Function Block Diagram (FBD). But standard coverage criteria for data flow languages haven't been established. Therefore, we proposed new test coverage criteria for data flow languages...
Based on recording the inputs and outputs of control systems and its control modules and control blocks during on-site disturbance experiments and tests, an abnormal signal analysis based method for locating oscillation source in control blocks is proposed by intensively comparing the differences between the ideal standard responses and the actual response of a control system and its control modules...
The purpose of this work is to enable risk-limiting electricity dispatch through a market mechanism. There has been a solid body of work on centralized risk-limiting dispatch, which guarantees that the risk of energy shortage is within a user-specified bound. The current trading mechanism of a day-ahead electricity market can be viewed as a market that deals with the expectation (i.e., the first moment)...
PV generation variability and uncertainty significantly influence operation of the power systems with high penetration of PV sources. The potential impact of distributed PV generation on ramp rate requirements in the IEEE 24-bus system is evaluated in this paper. PV generation and load are, here, probabilistically modeled using actual data and curve fitting approach. Probabilistic unit commitment...
During trigging of Gas generators in Aliabad power plant by trigger system (SFC made by ABB company)1, the generated current harmonic during trigging causes negative impacts on voltage of local power distribution network, this problem caused Flicker on lighting system of administrative units. In order to clarify the problem, the current samples at different operating frequencies of generator were...
This paper focuses on a few different aspects of the dynamic model validation process. It briefly describes the undergoing development of NERC standards that would require the validation and periodic re-validation of dynamic simulation models and then discusses the capabilities and shortfalls of the different approaches that might be applied to comply with such requirements. Finally, the paper presents...
In 2005 the author published an article in North American Windpower magazine that discussed how in recent years power generation projects using wind turbines have been required to operate in a similar manner to conventional generating resources. The subject was later presented during Panel Session ldquoOptional Characteristics of Wind Farmsrdquo at the 2006 IEEE PES General Meeting held in Montreal,...
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