Javad Zare, PEng, MASc

Javad Zare, PEng, MASc

Canada
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About

As a Professional Engineer (PEng) with over nine years of experience in electrical…

Activity

Experience

  • Alectra Graphic

    Alectra

    Brampton, Ontario, Canada

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    Kitchener, Ontario, Canada

  • -

    Kitchener, Ontario, Canada

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    Tehran Province, Iran

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    Yazd Province, Iran

Education

  • University of Waterloo Graphic

    University of Waterloo

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    "Research Assistant"
    - Study the operation of different types of wind power plants,
    - Analyze the performance of the protection system of distribution and transmission systems in the presence of high-level of wind farms using PSCAD/EMTDC and MATLAB,
    - Proposing two new approaches to tackle the challenges regarding wind power plants.

    "Teaching Assistant"
    - Special Topics in Power Systems and High Voltage Engineering,
    - Power Systems and Components,
    - Laboratory…

    "Research Assistant"
    - Study the operation of different types of wind power plants,
    - Analyze the performance of the protection system of distribution and transmission systems in the presence of high-level of wind farms using PSCAD/EMTDC and MATLAB,
    - Proposing two new approaches to tackle the challenges regarding wind power plants.

    "Teaching Assistant"
    - Special Topics in Power Systems and High Voltage Engineering,
    - Power Systems and Components,
    - Laboratory instructor for Actuators & Power Electronics.

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    "Research Assistant"
    - Working as a research technician at the Digital Relays Laboratory,
    - Acquired project management skills through supervising several undergraduate research projects,
    - Wrote numerous technical reports and methodological analyses.

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Licenses & Certifications

Publications

  • A new relaying scheme for protection of transmission lines connected to DFIG-based wind farms

    IET Renewable Power Generation

    This paper presents a new protection scheme with low communication capacity requirement for protecting lines connected to a doubly-fed induction generator (DFIG)-based wind farm (WF). The proposed relaying scheme addresses the line protection challenges which stem from the non-synchronous frequency component of the current fed from a DFIG-based WF during a short-circuit fault. The fault current frequency of a DFIG-based WF deviates from the synchronous frequency during a fault, which affects…

    This paper presents a new protection scheme with low communication capacity requirement for protecting lines connected to a doubly-fed induction generator (DFIG)-based wind farm (WF). The proposed relaying scheme addresses the line protection challenges which stem from the non-synchronous frequency component of the current fed from a DFIG-based WF during a short-circuit fault. The fault current frequency of a DFIG-based WF deviates from the synchronous frequency during a fault, which affects the operation of distance relays. In such a scenario, the distance relay located at the WF terminal may lose its coordination with downstream relays, resulting in unnecessary tripping. The proposed scheme relies on the impedance trajectory captured by the local relay, local fault current characteristics, and the frequency tracking of the fault current measured at the distance relays located at the two ends of the transmission line connected to a DFIG-based WF. The reliable performance of the proposed scheme is verified on a 4-bus test system under balanced and unbalanced faults during super- and sub-synchronous operating modes of the DFIG as well as its robustness against power system disturbances.

    See publication

  • A New Distance Protection Scheme for SCIG-based Wind Farms

    This paper presents a new algorithm for a distance relay located at the terminal of a squirrel cage induction generator (SCIG)-based wind farm (WF). The proposed relaying algorithm addresses the line protection challenges which stem from the particular characteristics of the current fed from a SCIG-based WF. The fault current of a SCIG-based WF decreases immediately after a balanced fault and results in the apparent impedance trajectory leaving zone 2 before the distance relay operates. The…

    This paper presents a new algorithm for a distance relay located at the terminal of a squirrel cage induction generator (SCIG)-based wind farm (WF). The proposed relaying algorithm addresses the line protection challenges which stem from the particular characteristics of the current fed from a SCIG-based WF. The fault current of a SCIG-based WF decreases immediately after a balanced fault and results in the apparent impedance trajectory leaving zone 2 before the distance relay operates. The proposed method uses the impedance measured by the relay together with the damping characteristics of the phase fault current injected by the SCIG-based WF to detect faults in the protection zones of the relay and to generate the proper trip signal. The performance of the proposed algorithm is verified on a 4-bus test system. The obtained results demonstrate the reliability of the proposed protection scheme and its robustness to the fault impedance.

    See publication

  • Communication-Constrained Regionalization of Power Systems for Synchrophasor-Based Wide-Area Backup Protection Scheme

    IEEE Transaction on Smart Grid

    The evolving wide-area measurement system technology offers new opportunities for backup protection of transmission lines to avert the misoperation of conventional relays against system disturbances and prevent system instability. Since wide-area backup protection (WABP) is to operate at the range of a few hundred milliseconds, the delays associated with data and command communications and algorithm execution can be a troublesome issue in a large-scale power system. This paper briefly reviews a…

    The evolving wide-area measurement system technology offers new opportunities for backup protection of transmission lines to avert the misoperation of conventional relays against system disturbances and prevent system instability. Since wide-area backup protection (WABP) is to operate at the range of a few hundred milliseconds, the delays associated with data and command communications and algorithm execution can be a troublesome issue in a large-scale power system. This paper briefly reviews a WABP scheme based on positive-sequence voltage phasor direct and indirect measurements. To overcome the problem of WABP delays, an integer linear programming (ILP) model is proposed to divide the power system into several protection regions. This process is accomplished in three stages in which the number and location of measurement devices (MDs), the number and boundary of protection regions, and the location of protection rooms, as well as the total number of communication links between MDs and protection rooms are optimized. The proposed WABP scheme is implemented in each region and individually protects the associated transmission lines. Execution of the proposed ILP model on different test systems reveals that with regionalization of the systems, WABP schemes can reliably be used in practice.

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  • Synchrophasor-Based Wide-Area Backup Protection Scheme with Data Requirement Analysis

    IEEE Transaction on Power Delivery

    This paper presents a fast and robust wide-area backup protection scheme to detect the faulty condition and to identify the faulted line in a large power network. The proposed methodology uses positive-sequence synchrophasor data captured by either digital relays with synchronization capability or phasor measurement units dispersed over the network. The basic idea behind the new protection scheme is the comparison of bus voltage values calculated through dissimilar paths. Upon occurrence of a…

    This paper presents a fast and robust wide-area backup protection scheme to detect the faulty condition and to identify the faulted line in a large power network. The proposed methodology uses positive-sequence synchrophasor data captured by either digital relays with synchronization capability or phasor measurement units dispersed over the network. The basic idea behind the new protection scheme is the comparison of bus voltage values calculated through dissimilar paths. Upon occurrence of a fault, the faulty condition is first detected and the bus(es) connected to the faulted line is(are) determined. Among transmission lines connected to the suspected bus(es), the faulted one is thereafter identified. In addition to two-terminal transmission lines, multiterminal lines are also incorporated. The performance of the proposed method is validated on the IEEE 57-bus test system in different fault conditions (fault type, fault location, and fault resistance). Discrimination of faulty and normal conditions is simulated by examining various stressed conditions, for example, load encroachment, generator outage, and power swing. The data requirement of the proposed technique is analyzed as well. To do so, a mathematical model for the optimal placement of measurement devices is developed and applied to different IEEE standard test systems.

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  • Synchrophasor-assisted line outage identification: A simple and iterative algorithm

    2015 23rd Iranian Conference on Electrical Engineering

    This paper proposes a new iterative algorithm for detection of outage of two- and three-terminal lines in a wide-area power network. The proposed methodology uses the combination of pre- and post-event information captured by phasor measurement units (PMUs) dispersed over the network. First, to limit the event search space and reduce the execution time of the proposed iterative algorithm, a set of suspicious lines are determined through the comparison of variations of voltage phase angle of…

    This paper proposes a new iterative algorithm for detection of outage of two- and three-terminal lines in a wide-area power network. The proposed methodology uses the combination of pre- and post-event information captured by phasor measurement units (PMUs) dispersed over the network. First, to limit the event search space and reduce the execution time of the proposed iterative algorithm, a set of suspicious lines are determined through the comparison of variations of voltage phase angle of buses equipped with PMUs. Then, each suspicious line is assumed to be on outage the current phasor of its' one (or both) end(s) is estimated. If the estimated current is approximately zero, the associated transmission line is on outage in reality and the screening process terminates; otherwise, the process continues by examining the next suspicious line. In a power system with the minimum number of PMUs ensuring network complete observability, the proposed iterative algorithm can identify outage of all transmission lines. The reliability of the proposed algorithm is verified by simulations on IEEE 14-bus test system. The effects of system stressed conditions (generator outage, power swing, and load encroachment) on the performance of the proposed method are evaluated as well.

    See publication

Languages

  • English

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  • Persian

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