scholarly journals Minimizing the Impact of Intermittent Wind Power on Multiperiod Power System Operation with Pumped Hydro Generation

Energies ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3583 ◽  
Author(s):  
Aliyu Hassan ◽  
Yskandar Hamam ◽  
Josiah L. Munda
Keyword(s):  
Power System ◽  
Wind Power ◽  
Normal Operation ◽  
System Operation ◽  
Power System Operation ◽  
Effective Power ◽  
Power Resources ◽  
Fast Start ◽  
Value Decomposition ◽  
The Impact

In power system operations, unforeseen energy imbalances commonly occur, resulting in unexpected constraints on the system. This leads to a disturbance in normal operation. In systems with integration of large intermittent wind power resources, additional complications are imposed on the system, especially under heavy winds that require immediate measures to minimize possible impact of abrupt wind power fallout. Effective power system fortifications have to be put in place to address the challenges. Wind varies more on the sub-hourly time scales; therefore, sub-hourly dispatch is bound to address more of these issues than commonly used hourly methods. Hybrid power system operation with wind necessitates the use of fast start-up generation and storage to improve quality of power. In this work, the impact of intermittent wind power curtailment on power system operation is addressed to prevent system instability. A modified wind turbine power curve is used to restrict the onset of the normal cut-off point, thereby allowing sufficient time for effective power switchover with pumped hydro generation. This improves the voltage stability of the power system during curtailment. Singular value decomposition matrix of the power system network is employed to evaluate the performance of the proposed method.

scholarly journals Unit Commitment Considering Interruptible Load for Power System Operation with Wind Power

Energies ◽  
2014 ◽  
Vol 7 (7) ◽  
pp. 4281-4299 ◽  
Author(s):  
Hyeon-Gon Park ◽  
Jae-Kun Lyu ◽  
YongCheol Kang ◽  
Jong-Keun Park
Keyword(s):  
Power System ◽  
Wind Power ◽  
Unit Commitment ◽  
System Operation ◽  
Power System Operation ◽  
Interruptible Load

scholarly journals The impact of selected biofuels on the performance parameters of the Common Rail power system in the utility engine

2018 ◽  
Vol 234 ◽  
pp. 03004 ◽  
Author(s):  
Paweł Krzaczek ◽  
Arkadiusz Rybak ◽  
Andrzej Bochniak
Keyword(s):  
Power System ◽  
Common Rail ◽  
Animal Origin ◽  
System Operation ◽  
Working Pressure ◽  
Load Range ◽  
Power System Operation ◽  
The Common ◽  
Operation Parameters ◽  
The Impact

The aim of the research was to determine the impact of biofuels from waste materials of plant and animal origin on the parameters of the common rail power supply system in the utility engine. The tests included identification of power system operation parameters in the whole load range of the tested engine, taking into account the limit and diagnostic parameters of the injectors operation. Then, for certain parameters, the engine injectors were tested on the test bench: injection pressure in the range of 25-135 MPa, injection time in the range of 200-1600 μs. In the tests, as reference fuel for testing injectors were used diesel fuel and three types of methyl esters of higher fatty acids: vegetable, animal and WCO origin. The measurements for individual fuels were made in the operating temperature range 30-60°C. The tests have shown significant changes in the volume of the fuel injection rates depending on the fuel used. Particularly, visible changes concerned the power system operation parameters for high engine speeds and the maximum working pressure of the common rail system in the engine.

Planning and Operation of Large Offshore Wind Farms in Areas with Limited Power Transfer Capacity

2012 ◽  
Vol 36 (1) ◽  
pp. 69-80 ◽  
Author(s):  
John Olav Giæver Tande ◽  
Magnus Korpås ◽  
Kjetil Uhlen
Keyword(s):  
Power System ◽  
Wind Power ◽  
Wind Farms ◽  
Power Installation ◽  
Offshore Wind ◽  
Rational Approach ◽  
System Operation ◽  
Offshore Wind Farms ◽  
Power System Operation ◽  
Wind Power Installation

At many locations with excellent wind conditions the wind farm development is hindered by grid issues. Conservative assumptions are often applied that unnecessarily limits the wind power installation. This paper shows that significantly more wind power can be allowed by taking proper account of the wind power characteristics and facilitating coordinated power system operation. A systematic approach is developed for assessing grid integration of wind farms subject to grid congestions. The method is applied to a case of connecting offshore wind farms to regional grid with hydro generation (380 MW) and loads (75–350 MW). The tie to the main grid is via a corridor with limited capacity (420 MW). With conservative assumptions (i.e. no changes in scheduled hydro generation or control of wind power output) the wind power installation is limited to 115 MW. The system operation is simulated on an hourly basis for multiple years taking into account the stochastic variations of wind speed and hydro inflow as well as the geographical distribution of wind farms. The simulation uses a control strategy for coordinated power system operation that maximises wind penetration. By using the developed methodology the wind power capacity can be increased from 115 MW to at least 600 MW with relatively little income reduction from energy sales compared to a case with unlimited grid capacity. It is concluded that coordinated operation allows for the integration of surprisingly large amounts of wind power. In order to realize the increase in transfer capability, it is essential to take account of the power system flexibility and the stochastic and dispersed nature of wind power. The presented methodology facilitates this and represents a rational approach for power system planning of wind farms.

scholarly journals New tool for integration of wind power forecasting into power system operation

2009 ◽  
Author(s):  
Andrej F. Gubina ◽  
Andrew Keane ◽  
Peter Meibom ◽  
Jonathan O'Sullivan ◽  
Oisin Goulding ◽  
...  
Keyword(s):  
Power System ◽  
Wind Power ◽  
System Operation ◽  
Power System Operation ◽  
Wind Power Forecasting ◽  
Power Forecasting

scholarly journals Risk Assessment for Power System Operation Planning With High Wind Power Penetration

2015 ◽  
Vol 30 (3) ◽  
pp. 1359-1368 ◽  
Author(s):  
Michael Negnevitsky ◽  
Dinh Hieu Nguyen ◽  
Marian Piekutowski
Keyword(s):  
Risk Assessment ◽  
Power System ◽  
Wind Power ◽  
Operation Planning ◽  
High Wind ◽  
System Operation ◽  
Power System Operation
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