Also each inverter can provide reactive power compensation independently. 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. 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. Since the pid controller is linear and its performance in nonlinear system like hvac system is not satisfied. Study of power system performance with interline power.
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. The proposed fuzzy logic controller plays well due to its linguistic nature. Unified power flow controller upfc upfc is a combination of statcom and sssc coupled via a common dc voltage link. Unified power flow controller upfc integrated power flow controller ipfc. State estimation of power system with interline power flow. It is a combination of series controllers or a unified controller. Optimal power flow with interline power flow controller using harmony search algorithm 3 b.
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. 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. With this scheme, ipfc has the capability to provide an independently controllable reactive series compensation for each individual line. 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. Interline power flow controller ipfc is one of the versatile facts device. The ipfc interline power flow controller and upfc unified power flow control among the facts devices aimed to the power flow control. 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. Simulation of interline power flow controller in power. Unified pow er flow controller, ip fc interline power flow controller. 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. Distributed power flow controller is achieved the converters and by applying dfacts concept to three phase series converter in unified power flow controller. Power system state estimation with interline power flow.
For this purpose, a single machinein nite bus model, integrated with ipfc, is used and the linearized. Modeling of ipfc for power flow control in 3phase line. The interline power flow controller ipfc is an extension of the upfc concept to the economic control and optimization of multiline power transmission systems. Use of an interline power flow controller model for power flow analysis. The facts flexible ac transmission systems is a concept based on powerelectronic controllers, which enhance the value of transmission networks by increasing the use of their. Tech power system school of engineering gautam buddha university, gr. Analyzing the effect of different types of interline power. Use of an interline power flow controller model for power.
An interline power flow controller ipfc, shown in fig. Ipfc is developed with the objective of balancing real and reactive power flow among multilines and to transfer power from overloaded to under loaded lines. A common dc link within the ipfc is able to facilitate real power transfer among the lines of the transmission system. Power flow analysis of a power system in the presence of. This paper is concerned about the state estimation of system, which contain flexible ac transmission system. Control of active and reactive power flow in multiple. Analysis on control solution of interline power flow. Various power adapters are available for use with 12 vdc versions. In an ipfc, the exchanged real power can flow bidirectionally between ac lines which may be of different frequencies, thus making the ipfc an asynchronous tie. Unlike other facts devices that aim to control the parameter of a single transmission line, the ipfc is conceived for the. Pdf power flow management through interline power flow.
Optimal power flow opf problem was solving from the decades with different objectives as the economy was growing. In this paper, line idvr system is explained which employs two dvrs, connected to a common dclink, is connected to two. The interline power flow controller ipfc combining at least two converters, can be configured. In its general form the interline power flow controller employs a. International journal of mechatronics, electrical and computer technology vol. The ipfc is the multifunction device, such as power flow control, voltage control, oscillation damping. Single objective optimization using pso with interline. Prabhakar department of electrical and electronics engineering sri venkateswara college of engineering, sriperumbudur. Ipfc is one of the latest generation facts controllers to control power flow. Contentsfacts devicesbenefits of facts devicestypes of facts devicesintroduction to upfccircuit descriptioncontrol schemesconclusion 3. The e ect of an interline power flow controller ipfc on. 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. Dual damping controller using interline power flow controller. 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 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. It is the combination of two or more ssscs which are coupled via a common dc link. Fuzzy logic controller based interline power flow controller 3653 link capacitor, make it complex 4. The minimum number of converters connected backtoback is two. There are various facts controllers and can be classified on the basis of their connection in the.
Power system stability enhancement using interline power flow controller r. Pdf use of an interline power flow controller model for. 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. 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. Dynamic performance of the interline unified power flow. 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. This paper investigates the damping control function of an interline power ow controller installed in a power system. Power flow control using interline power flow controller. Power units may be ordered for either 12 vdc or 24 vdc power. 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.
Simulation of distributed interline power flow controller. With the flexible ac transmission systems facts technique, the power flow in the interconnected power systems can be controlled flexibly. Robust modeling of the interline power flow controller and. However, the inverters can transfer real power between them via their common dc terminal. The proposed method is tested on anderson and fouad 9bus test system and the results are presented. Pdf simulation and state estimation of power system with. International journal of mechatronics, electrical and.
Better power flow control can boost the transfer capacity of transmission line up to 23 times of the uncontrolled case. Power flow management through interline power flow. Power quality mainly depends on the compensation of reactive power and level of voltages. These are able to control independently the throughput active and reactive powers. In this paper cost of generation, transmission losses and lindex are taken as three different objectives for optimal operation of. An interline power flow controller ipfc consists of a set of converters that are connected in series with different transmission lines. Digital simulation of an interline dynamic voltage. Mathematical models of the sssc and the ipfc and their implementation in newton power flow are reported. Pdf interline power flow controller ipfc steady state. Usually the main purpose of facts transmission system limits. When operating below its rated capacity, the ipfc is in regulation mode, allowing of the p and q flows on one line, and the p flow on. Robust interline power flow controller with wind power source using phaseplane uzzyf logic control 25 fig. Optimal location of interline power flow controller for.
Power oscillation, interline power flow controller, wind energy, lsdp, robust control. Among the facts components, unified power flow controller upfc and interline power flow controller ipfc are the most advanced in facts controllers 4. 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. Numerical results based on the ieee 30bus are presented to demonstrate the performance of the newton power flow. The interline power flow controller ipfc 43 is a upfcderived device with the objective of controlling power flow between lines instead of one line as in the upfc. Enhancement of power quality and mitigation of harmonics. Facts technology improves the power system stability by providing the necessary. In this paper, an interline power flow controller ipfc is used for controlling multi transmission lines. Interline power flow controller ipfc is one of the versatile facts device which is considered for state estimation. Robust interline power flow controller with wind power. Interline power flow controller ipfc is the latest generation of facts controllers 12. The unified power flow controller upfc concept was proposed by gyugyi in the late 1980s, the electric power research institute epri formulated the flexible ac transmission voltage and power flow and reduces dynamic disturbances. Modeling generalized interline powerflow controller. Physical and eventbased modeling physical modeling simscape electrical specialized power systems power electronics tags add tags facts indraneel saki indranil saaki interline power f.
In general, ipfc is used in multiple transmission lines of a power system network. Power system stability enhancement using interline power. The problem of reactive power compensation and flow of power through the lines can be addressed with the help of new generation facts controllers. International journal on recent technologies in mechanical. Hs mic college of technology, kanchikacherla, ap, india. These models are more accurate than existing models and aid the power. A unified power flow controller is an electrical device for providing fastacting reactive power compensation on highvoltage electricity transmission networks. Single line diagram of an interline power flow controller with two series vscs and one parallel vsc. Controller will automatically adjust the display and output signal. Ipfc based power injection model is incorporated in the state estimation algorithm.
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