Then a new device which is named Inter-line Dynamic Voltage Restorer (IDVR) is discussed. This device consists of two conventional DVRs which are installed. An interline dynamic voltage restorer (IDVR) is a novel c o m p e n s a t i o n piece of mitigation It is made of several dynamic voltage restorers (DVRs) with a. Index Terms—Dynamic voltage restorer, Interline dynamic voltage restorer, Current source inverter, SMES and Power quality.
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The overall three-phase voltage signals during in-phase compensation simulation. The proposed concept has been supported with simulation and experimental results.
With this technique, none or less of the real power will be transferred to the system, which provides more for the DVR to cover a wider range of voltage sags, adding more flexible adaptive control to the solution of sag voltage disturbances.
In this paper, a new configuration has been proposed which not only improves the compensation capacity of the IDVR at high power factors, but intefline increases the performance of the compensator to mitigate deep sags at fairly moderate power dynamicc.
The real and reactive powers are calculated in real time in the tracking loop to achieve better conditions. This paper proposes a new operational mode rsetorer the IDVR to improve the DF of different feeders under normal operation.
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In this mode, theDFof one of the feeders is improved via active and reactive power exchange PQ sharing between feeders through the common dc link. The experimental interlinw demonstrate the feasibility of the proposed phase jump compensation method for practical applications. DF improvement can be achieved via active and reactive power exchange PQ sharing between eynamic feeders. The main conclusions of this work can be summarized as follows: Single line diagram of an IPFC in transmission system.
A method for building a dynamic phasor model of an Interline Dynamic Voltage Restorer IDVR is presented, and the resulting model is tested in a simple radial distribution system.
Simulation and experimental results elucidate interlinne substantiate the proposed concept. These operational constraints have been identified and considered. For normal voltage levels, the Dynzmic should be bypassed. Winter Meetingvol. The ensure compatibility with transient stability programs, the analysis is performed for the fundamental frequency only, with other frequency components being truncated and without considering harmonics. Mathematical analysis is carried out for each individual component of the IDVR as modular models, which are then aggregated to generate the final model.
Interline dynamic voltage restorer (IDVR) Archives – ASOKA TECHNOLOGIES
The existing control strategies either mitigate the phase jump or improve the utilization of dc link energy by i reducing the amplitude of injected voltage, or ii optimizing the dc bus energy support.
These advantages were achieved by decreasing the load power factor during sag condition. The proposed technique has the advantage of simplifying the modelling of any flexible AC transmission system FACTS device in dynamic phasor mode when compared to other modelling techniques reported in the literature.
The DF of the sourcing feeder increases while the DF of the receiving feeder decreases. Finally, the simulation and practical results on the CHB based IDVR confirmed the effectiveness of the proposed configuration and control scheme. Electronics Nuclear engineering, Electrical and Electronic Engineering. Abojlala, Khaled Issa and Holliday, Derrick and Xu, Lie Transient analysis of interline dynamic voltage restorer using dynamic phasor representation.
IDVR compensation capacity, however, depends greatly on the load power factor and a higher load power factor causes lower performance of IDVR. Per-phase experimental and corresponding voltagd results for DF improvement case: The experimental test results match those proposed using simulation, although some discrepancies dynsmic to the imperfect nature of the test circuit components were seen.
Computer planning and simulation of power systems require system components to be represented mathematically. This paper presents a utilization technique for enhancing the capabilities of dynamic voltage restorers DVRs. The results from both the simulation and experimental tests illustrate that the proposed technique clearly achieved superior performance. This technical merit demonstrates that DVRs could cover a wider range of voltage sags; the practicality of knterline idea for better utilization is better than that of existing installed DVRs.
To illustrate the effectiveness of the proposed method an analytical comparison is carried out with the existing phase jump compensation schemes. Investigating the IDVR performance when the proposed method resorer applied for a sag with depth of 0.
Strathprints home Open Access Login. This enhancement can also be seen as dynamuc considerable reduction in dc link capacitor size for new installation. The main conclusions of this work can be summarized as follows:. While one of the DVRs compensates for the local voltage sag in its feeder, the other DVRs replenish the common dc-link voltage.
During sag period, active power can be transferred from a feeder to another one and voltage sags with long durations can be mitigated. This paper deals with improving the voltage quality of sensitive loads from voltage sags using dynamic voltage restorer DVR. In this technique, the source voltages are sensed continuously and when the voltage sag is detected, the shunt reactances are switched into the circuit dynmaic decrease the load ingerline factors to improve IDVR performance.
Both the magnitude and phase displacement angle of the synthesized DVR voltage are precisely adjusted to achieve lower power utilization. The overall three-phase voltage signals volhage zero-real power tracking compensation simulation. An interline dynamic voltage restorer Restorrr is a new device for sag mitigation which is made of several dynamic voltage restorers DVRs with a common DC link, where each DVR is connected in series with a distribution feeder.
Instead of bypassing the DVRs in normal conditions, this paper proposes operating the DVRs, if needed, to improve the displacement factor DF of one of the involved feeders. An IDVR merely consists of several dynamic voltage restorers DVRs sharing a common dc link connecting independent feeders to secure electric inerline to critical loads.
Then, experimental results on a scaled-down IDVR are presented to confirm the theoretical and simulation results.