A New Method for Placement of DG Units in Distribution Networks
A New Method for Placement of DG Units in Distribution Networks
H.Hedayati, S.A.Nabaviniaki, Senior Member, IEEE, and A.Akbarimajd
Abstract-- In this paper a new method for placement of DG (distributed generation) units in distribution networks has been presented. This method is based on two factors: analysis of power flow continuation and determination of the most sensitive voltage buses to collapse voltage. This method has been executed on a typical 34-Bus test system. Efficiency of proposed method in improvement of voltage profile and reduction of power losses is verified by analytical and simulation results. Also the method may cause to increase of capacity saving, maximum loadability voltage stability margin. Index terms -- DG, capacity saving , collapse voltage, maximum loadability , CPF , voltage stability.
Different methods are used for locating. Lagrange method and two degrees gradiant and sensivity analysis method has been employed for placement [4]-[5]-[6]-[7]. This paper presents a new method for placement of DG units in distribution networks. This method is based on the analysis of power flow continuation and determination of voltage buses that are most sensitive to collapse voltage [8]. Subsequently, by selecting a objective function and using an iterative algorithm, DG units with known capacity will be installed on previously determined voltage buses. In iterative algorithm, the method of continuation power flow is used for determination of maximum loadability, thus it is needed to study the impact of different DG technologies on static voltage stability. This method will be executed on a typical 34-Bus test system. II-The impact of different DG technologies on Voltage Stability A. Synchronous Generator Conventional synchronous generators are capable of both generating and absorbing reactive power. Therefore, the use of DG’s utilizing overexcited synchronous generators will allow on-site production of reactive power. The local generation of
H.Hedayati, S.A.Nabaviniaki, Senior Member, IEEE, and A.Akbarimajd
Abstract-- In this paper a new method for placement of DG (distributed generation) units in distribution networks has been presented. This method is based on two factors: analysis of power flow continuation and determination of the most sensitive voltage buses to collapse voltage. This method has been executed on a typical 34-Bus test system. Efficiency of proposed method in improvement of voltage profile and reduction of power losses is verified by analytical and simulation results. Also the method may cause to increase of capacity saving, maximum loadability voltage stability margin. Index terms -- DG, capacity saving , collapse voltage, maximum loadability , CPF , voltage stability.
Different methods are used for locating. Lagrange method and two degrees gradiant and sensivity analysis method has been employed for placement [4]-[5]-[6]-[7]. This paper presents a new method for placement of DG units in distribution networks. This method is based on the analysis of power flow continuation and determination of voltage buses that are most sensitive to collapse voltage [8]. Subsequently, by selecting a objective function and using an iterative algorithm, DG units with known capacity will be installed on previously determined voltage buses. In iterative algorithm, the method of continuation power flow is used for determination of maximum loadability, thus it is needed to study the impact of different DG technologies on static voltage stability. This method will be executed on a typical 34-Bus test system. II-The impact of different DG technologies on Voltage Stability A. Synchronous Generator Conventional synchronous generators are capable of both generating and absorbing reactive power. Therefore, the use of DG’s utilizing overexcited synchronous generators will allow on-site production of reactive power. The local generation of