Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Capability Value (1)
- Capability chart; Doubly-fed induction generator (DFIG) (1)
- Commercial building microgrids (1)
- Conventional generator (1)
- DFIG (1)
-
- Distributed generators (1)
- Droop control (1)
- Energy Management (1)
- Flicker (1)
- Flicker emission (1)
- Flicker mitigation (1)
- Harmonics (1)
- Inverter-based generator (1)
- Islanded mode (1)
- Load sharing (1)
- Mode transition (1)
- PV generation (1)
- Photovoltaic inverters (1)
- Power factor control;Voltage control (1)
- Power management (1)
- Power quality (1)
- Power system stability; frequency response; gas turbines; combined cycle power stations (1)
- RAPS systems (1)
- Remote area power supply (RAPS) systems (1)
- Renewable Energy (1)
- Solar-photovoltaic (PV) (1)
- VQ curves (1)
- VQ instability (1)
- Variable-speed drive (1)
- Voltage stability (1)
Articles 1 - 7 of 7
Full-Text Articles in Power and Energy
Capability Constraints To Mitigate Voltage Fluctuations From Dfig Wind Farms When Delivering Ancillary Services To The Network, Lasantha Meegahapola, S Perera
Capability Constraints To Mitigate Voltage Fluctuations From Dfig Wind Farms When Delivering Ancillary Services To The Network, Lasantha Meegahapola, S Perera
Dr Lasantha G Meegahapola
Majority of the wind power resources are typically sited at remote locations in power networks and generated power is transmitted through rural transmission corridors to load centres. With increased penetration level of the wind generation there is an increased requirement to provide ancillary services from distributed wind power resources, hence they are operated under different control strategies to provide ancillary services to the network. The control strategies and capability characteristics will significant impact on voltage fluctuations in distribution networks. This paper presents a comparative analysis between different wind generator control strategies (i.e. power factor control strategy, voltage control strategy and …
Characterisation Of Gas Turbine Dynamics During Frequency Excursions In Power Networks, Lasantha Meegahapola
Characterisation Of Gas Turbine Dynamics During Frequency Excursions In Power Networks, Lasantha Meegahapola
Dr Lasantha G Meegahapola
Gas turbines inherently depict unique frequency response characteristics compared with other conventional synchronous generation technologies as their active power output is not entirely determined by the governor response during frequency deviations of the power network. Thus, gas turbine dynamics significantly influence on system stability during frequency events in power networks. Power system and power plant operators require improved understanding of the gas turbine characteristics during various frequency events in order to mitigate adverse impact on power system. Therefore a comparative analysis has been performed between combined-cycle gas turbines (CCGTs) and open-cycle gas turbines (OCGTs) in order to characterise the dynamic …
Microgrids Of Commercial Buildings: Strategies To Manage Mode Transfer From Grid Connected To Islanded Mode, Lasantha Meegahapola, D Robinson, A Agalgaonkar, S Perera, P Ciufo
Microgrids Of Commercial Buildings: Strategies To Manage Mode Transfer From Grid Connected To Islanded Mode, Lasantha Meegahapola, D Robinson, A Agalgaonkar, S Perera, P Ciufo
Dr Lasantha G Meegahapola
Microgrid systems located within commercial premises are becoming increasingly popular and their dynamic behavior is still uncharted territory in modern power networks. Improved understanding in design and operation is required for the electricity utility and building services design sectors. This paper evaluates the design requirements for a commercial building microgrid system to facilitate seamless mode transition considering an actual commercial building microgrid system. A dynamic simulation model of the proposed microgrid system is established (utilizing DIgSILENT Power Factory) to aid the development of planning and operational philosophy for the practical system. An economic operational criterion is developed for the microgrid …
Impact Of Renewable Power Integration On Vq Stability Margin, H. W. K. M. Amarasekara, Lasantha Meegahapola, Sarath Perera, Ashish Agalgaonkar
Impact Of Renewable Power Integration On Vq Stability Margin, H. W. K. M. Amarasekara, Lasantha Meegahapola, Sarath Perera, Ashish Agalgaonkar
Dr Lasantha G Meegahapola
With the increasing number of grid connected renewable energy sources in power systems, the requirements for in-depth studies to characterise the dynamics of power systems have also intensified. In this paper, the impact of renewable power generators on power system voltage stability is analysed. As the renewable power penetration increases, having adequate levels of reactive power generation in power systems for voltage support is a major challenge. Therefore, in this work, special attention was placed on VQ instability to investigate static voltage stability of a test network embedded with renewable power generation. The impact of different control strategies associated with …
Impact Of Capacity Value Of Renewable Energy Resources On Raps System Energy Management, Lasantha Meegahapola, Y Tan, K Muttaqi
Impact Of Capacity Value Of Renewable Energy Resources On Raps System Energy Management, Lasantha Meegahapola, Y Tan, K Muttaqi
Dr Lasantha G Meegahapola
Renewable energy resources are widely being utilised in remote area power supply (RAPS) systems. The capacity value of renewable energy resources in a RAPS system indicates the ability of renewable energy resources to serve the load demand in the RAPS systems. In this paper, the impact of capacity value of renewable resources on energy management of a RAPS system, while maintaining system reliability, is investigated. It is revealed that capacity value of renewable energy resources has direct influence on RAPS system energy management. By utilising storage in conjunction with renewable energy resources, the RAPS system can cater load demand while …
Power Quality Emission Assessment Of Photovoltaic Inverters Based On Iec Technical Report 61000-3-15:2011, Lasantha Meegahapola, D Perera, P Ciufo, S Perera
Power Quality Emission Assessment Of Photovoltaic Inverters Based On Iec Technical Report 61000-3-15:2011, Lasantha Meegahapola, D Perera, P Ciufo, S Perera
Dr Lasantha G Meegahapola
The International Electrotechnical Committee Technical Report IEC 61000-3-15:2011 provides electromagnetic compatibility requirements and test conditions for distributed generators up to 75 A per phase. In the current research, two commercially available photovoltaic (PV) inverters up to the capacity of 3600 W were tested following the guidelines proposed in IEC 61000-3-15 in relation to low order harmonic emission and flicker emission. In addition, the harmonic and flicker emission behaviour of the PV inverters were investigated under varying irradiation conditions. Both PV inverters were observed to comply with the emission requirements prescribed by the technical report under most conditions except for even …
A Droop Control Based Load Sharing Approach For Management Of Renewable And Non-Renewable Energy Resources In A Remote Power System, Lasantha Meegahapola, Y Tan, K Muttaqi
A Droop Control Based Load Sharing Approach For Management Of Renewable And Non-Renewable Energy Resources In A Remote Power System, Lasantha Meegahapola, Y Tan, K Muttaqi
Dr Lasantha G Meegahapola
Droop control is a load sharing strategy applied in conventional power systems. In this paper, droop control strategy has been adopted for the generators in a remote area power supply (RAPS) system in order to share active and reactive power load based on the rated capacities of the generators. Different characteristics of conventional and inverter-based energy resources make it difficult to share load in proportion to the rated capacities of the generators in a RAPS system. Therefore, this paper investigates the load sharing performance of different combinations of conventional and inverter-based energy resources in RAPS systems. The study scenarios investigated …