Abstractthe controlled power flow in electric power systems is one of the essential factors affecting the overall development of modern power systems. Abstract the unified power flow controller upfc concept provides a powerful tool for the cost. This paper investigates the steady state operation of the interline power flow controller ipfc. The interline power flow controller ipfc is a voltagesourceconverter vscbased flexible ac transmission system facts controller which can inject a voltage with controllable magnitude and phase angle at the linefrequency thereby providing compensation among multiple transmission lines. Study of power system performance with interline power. Facts controller, fuzzy logic controller, interline power flow controller, reactive power compensation rpc, voltage stability corresponding author. In its general form, the ipfc employs two or more number of inverters vsi with a common dc link, each to provide series compensation for a selected line of the transmission system. In its general form the interline power flow controller employs a. This paper presents the analysis of characteristics of a series connected voltage sourced converter vsc and an interline power flow controller ipfc and the design of the power flow control for the ipfc. This paper investigates the damping control function of an interline power ow controller installed in a power system. Single objective optimization using pso with interline.
Through the analysis of the structure of ipfc, this paper demonstrates that fuzzy control method is an advanced and reasonable control method, which can be independently control bus voltage and the active and reactive. Facts controllers in power transmission and distribution. The interline power flow controller ipfc a concept for the compensation and effective power flow management of multiline transmission systems. Distributed power flow controller and distributed interline power flow controller where used for power quality improvement. An interline power flow controller ipfc is a converter based controller which compensates and balance the power flow among multilines within the same corridor of the multiline subsystem.
Many studies on the application of facts devices for power flow control and enhancement of damping of power system oscillations have been reported in the. Hs mic college of technology, kanchikacherla, ap, india. Use of an interline power flow controller model for power flow. In general, ipfc is used in multiple transmission lines of a power system network.
With this scheme, ipfc has the capability to provide an independently controllable. Power flow management through interline power flow. In this paper, direct modeling of the practical series orand shunt operating inequality constraints of the ipfc and the gupfc in power flow calculations are presented. May include energy storage to enhance the dynamic behavior of the power system by additional temporary real power compensation, to increase or decrease momentarily, the overall real resistive voltage drop across the line.
Interline power flow controller ipfc is vsc based facts controller, consists of two voltagesourced converters vscs inserted in series with lines. The work considers a unidirectional dcdc cfc with a simple structure and its average model is introduced into the mathematical formulation of the optimal power flow opf problem of an hybrid acdc. This capability is effective for increasing available transfer capability atc. In general, a sample test power system without facts devices has generated more reactive. Fuzzy logic controller based interline power flow controller 3653 link capacitor, make it complex 4. The interline power flow controller ipfc and the generalized unified power flow controller gupfc are two innovative configurations of the convertible static compensator csc of facts. Power system stability enhancement using interline power flow controller r. Enhancement of power quality and mitigation of harmonics. Dynamic performance of the interline unified power flow. Pdf power flow management through interline power flow.
Contentsfacts devicesbenefits of facts devicestypes of facts devicesintroduction to upfccircuit descriptioncontrol schemesconclusion 3. Facts controllers in power transmission and distribution 10. Tech power system school of engineering gautam buddha university, gr. It is the combination of two or more ssscs which are coupled via a common dc link.
The interline power flow controller ipfc provides, in addition to the facility for independently controllable reactive series compensation of each individual line, a capability to directly transfer or exchange real power between the compensated lines. The basic principle of series compensating facts devices is to alter. Multiline power flow using interline power flow controller ipfc in power transmission systems. The active power can be transferred between the two vscs through dc link as shown in figure 1. A mathematical model of the ipfc is presented and the model is used to investigate the flexibility of power flow control, in the presence of operating constraints of the ipfc.
Thyristor controlled series capacitor which is a continuous device and thyristor switched series capacitor is a discrete device. The parameters of pim are derived with help of the newtonraphson power flow algorithm. Power system stability enhancement using interline power. Energy function for an interline powerflow controller energy function for an interline powerflow controller azbe, v mihalic, r. Based on the conventional power system state estimation model, a kind of model for state estimation with ipfc is introduced in this paper, in which power injection model is used and the affect of ipfc on the power flow is.
Interline power flow controller ipfc advanced solutions in. Voltage compensation with interline power flow controller ipfc. This paper is meant to show that an interline current flow controller cfc is able to reduce the operating costs of hybrid acdc meshed grids by alleviating the congestion within the dc lines. The distributed interline power flow controller dipfc consists of the two or more series converters in different transmission lines that are interconnected via a common dc link, as shown in figure 7. The interline power flow controller ipfc, with its exclusive capability of series compensation, is a powerful device which can provide the power flow control of multiple transmission lines. An interline power flow controller ipfc consists of a set of converters that are connected in series with different transmission lines. Neurofuzzy based interline power flow controller for real. Modeling generalized interline powerflow controller. Ipfc based power injection model is incorporated in the state estimation algorithm. Conventionally, series capacitive compensation fixed, thyristorcontrolled or sssc based is employed to increase. In this paper, the nonlinear dynamic model of a multi machine power system incorporated with interline power flow controller ipfc has been developed for improvement in damping of power system oscillations and transient stability. Simulation of distributed interline power flow controller.
Design of controller for an interline power flow controller and. The ipfc is the multifunction device, such as power flow control, voltage control, oscillation damping. Optimal power flow operation of an interline current flow. Simulation of interline power flow controller in power. Robust interline power flow controller with wind power. The ipfc performance is tested with pi controllers in comparison with fuzzy logic based controller under healthy and abnormal operating conditions. Power flow control using interline power flow controller. Pdf design of an interline power flow controller researchgate. It uses a pair of threephase controllable bridges to produce current that is injected into a transmission line using a series transformer. Dynamic performance of the interline unified power flow controller iupfc system using 48pulse gto thyristor international journal of innovative research in electronics and communications ijirec page 19 fig. Power units may be ordered for either 12 vdc or 24 vdc power. Robust interline power flow controller with wind power source using phaseplane uzzyf logic control 25 fig. The rapid development of selfcommutated semiconductor devices, have made it potential. Pdf this paper presents a novel linearized phillipsheffron model of a power system installed with an interline power flow controller ipfc in order.
A unified power flow controller is an electrical device for providing fastacting reactive power compensation on highvoltage electricity transmission networks. An interline power flow controller ipfc, shown in fig. Analyzing the effect of different types of interline power. Ipfc is one of the latest generation facts controllers to control power flow. International journal of power energy systems engineering 2010. In its general form, the ipfc employs a number of inverters with a common dc link, each to provide series compensation for a. The interline power flow controller ipfc, with its exclusive capability of series compensation, is a powerful device which can provide the power flow control of. In this paper, a control method for ipfc is proposed to control magnitude and phase angle of one sending bus of a substation. Unified means that dc terminal of controller converters are connected together for real power exchange the objective of introducing this controller is to address the problem of compensating a number of transmission lines connected at a substation. Since the pid controller is linear and its performance in nonlinear system like hvac system is not satisfied. Interline power flow controller ipfc is one of the versatile facts device which is considered for state estimation.
Interline power flow controller is the control device of facts flexible ac transmission systems which can adjust trend, enhance stability, improve power grid transmission, etc. Generalized interline powerflow controller gipfc is one of the voltagesource controller vscbased flexible ac transmission system facts controllers that can independently regulate the powerflow over each transmission line of a multiline system. Distributed power flow controller is achieved the converters and by applying dfacts concept to three phase series converter in unified power. Based on the conventional power system state estimation model, a new method is proposed wherein an ipfc based power injection model is incorporated in the state estimation algorithm. When operating below its rated capacity, the ipfc is in regulation mode, allowing of. Upfc seriesseries interline power flow controller ipfc backtoback are considered here. Robust modeling of the interline power flow controller and. The interline power flow controller ipfc concept proposed in this paper addresses the problem of compensating a number of transmission lines at a given substation.
The e ect of an interline power flow controller ipfc on damping low frequency oscillations has been implied in some papers, but has not been investigated in detail. These are able to control independently the throughput active and reactive powers. The e ect of an interline power flow controller ipfc on. Ramana4 1department of electrical and electronics engineering, dvr and dr. He is the recipient of the 1992 westinghouse order of merit, the 1994 william e. Pdf the interline power flow controller ipfc proposed is a new concept for the compensation and effective power flow management of. Unlike other facts devices that aim to control the parameter of a single transmission line, the ipfc is conceived for the. In general the stability limit is defined as the maximum power which can flow through a point in the system with. The proposed controller has merits such as zero steadystate errors and robustness. Among the facts components, unified power flow controller upfc and interline power flow controller ipfc are the most advanced in facts controllers 4. It is a combination of series controllers or a unified controller. One of the newest facts devices flexible ac transmission systems is interline power flow controller ipfc. Various power adapters are available for use with 12 vdc versions.
The interline power flow controller ipfc is a series connected voltage source converter vsc based flexible ac transmission system facts controller for management of power flow among the multiline transmission system of a substation. Analysis on control solution of interline power flow. This capability of the upfc is facilitated by its power. Improvement of dynamical stability using interline power. Interline power flow controller ipfc is the latest generation of facts controllers 12. In this paper cost of generation, transmission losses and lindex are taken as three different objectives for optimal operation of. Each vsc provides real power control for the selected line of the transmission. Unified power flow controller upfc upfc is a combination of statcom and sssc coupled via a common dc voltage link. Physical and eventbased modeling physical modeling simscape electrical specialized power systems power electronics tags add tags facts indraneel saki indranil saaki interline power f. Optimal power flow opf problem was solving from the decades with different objectives as the economy was growing.
Optimal power flow with interline power flow controller using harmony search algorithm 3 b. By having several voltage source converters vsc, it has the capability for power flow of several lines simultaneously. Dr ahmed massoud university of strathclyde 2 facts 1. Improvement of power system performance using fuzzy logic. The problem of reactive power compensation and flow of power through the lines can be addressed with the help of new generation facts controllers. However, the inverters can transfer real power between them via their common dc terminal. Dual damping controller using interline power flow controller. The proposed method is tested on anderson and fouad 9bus test system and the results are presented. The schematic diagram of ipfc is illustrated in figure. Power flow analysis of a power system in the presence of. Power flow management through interline power flow controller. Use of an interline power flow controller model for power. Introduction in current scenario, the transmission and distribution networks are densely populated due to the surplus demand.
There are various facts controllers and can be classified on the basis of their connection in the. This article investigates the power quality enhancement in power system using one of the most famous series converter based facts controller like ipfc interline power flow controller in power injection model pim. Energy function for an interline powerflow controller. Controller will automatically adjust the display and output signal.
International journal on recent technologies in mechanical. Newell power electronics award of the ieee power electronics society, and the first flexible ac transmission system facts award given by the ieee power engineering society in 1999. Power system state estimation with interline power flow. Prabhakar department of electrical and electronics engineering sri venkateswara college of engineering, sriperumbudur.
Interline power flow controller ipfc steady state operation abstract. State estimation of power system with interline power flow. The proposed fuzzy logic controller plays well due to its linguistic nature. In this paper, the use of the ipfc based controller. Improvement of power system performance using fuzzy. Interline power flow controller ipfc is one of the versatile facts device. Pdf this paper presents the analysis of characteristics of a series connected voltage sourced converter vsc and an interline power flow controller. Abstract the interline power flow controller ipfc prop a new concept for the compensation and effective. Each inverter can provide a series reactive compensation, as an sssc, for its own line. Abstract the interline power flow controller ipfc proposed is a recent concept for the compensation and effective power flow management of multi line transmission systems. Facts technology improves the power system stability by providing the necessary.