Implementation and validation of advanced unintentional islanding testing using power hardware-in-the-loop (PHIL) simulation

Lundstrom, Blake; Mather, Barry; Shirazi, Mariko; Coddington, Michael

doi:10.1109/pvsc.2013.6745123

Cited by 17 publications

(12 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reactive power response is nearly critically damped, with no overshoot or ringing, thus passing the test. The original unintentional islanding tests shown in [15] were performed using a PHIL-based method [16]. However, for this paper, additional islanding tests were performed using the standard RLC load method from IEEE 1547.1, and those tests were repeated with advanced grid-support features running.…”

Section: Single-phase Inverter Test Resultsmentioning

confidence: 99%

Testing advanced photovoltaic inverters conforming to IEEE standard 1547 - Amendment 1

Hoke

Chakraborty

Basso

2014

2014 IEEE 40th Photovoltaic Specialist Conference (PVSC)

View full text Add to dashboard Cite

This paper introduces a new test plan and provides results for testing photovoltaic inverters with advanced grid support features including voltage regulation, wider voltage and frequency operating ranges, and voltage and frequency ridethrough, as allowed by IEEE Standard 1547-Amendment 1. The test plan emphasizes testing for interactions between and among advanced inverter features and conventional features (e.g., unintentional islanding), and it includes testing of inverter dynamic response when regulating voltage. Results are included from testing of a single-phase inverter and a three-phase inverter.

show abstract

Section: Single-phase Inverter Test Resultsmentioning

confidence: 99%

Testing advanced photovoltaic inverters conforming to IEEE standard 1547 - Amendment 1

Hoke

Chakraborty

Basso

2014

2014 IEEE 40th Photovoltaic Specialist Conference (PVSC)

View full text Add to dashboard Cite

show abstract

“…The PHIL concept has also been applied in the context of commissioning a test setup systematically [4]. A reported effort in applying PHIL simulation in unintentional islanding tests is given in [5], which successfully examined the behavior of 3-kW single-phase inverter units.…”

Section: Figure 2 Phil Simulation Conceptmentioning

confidence: 99%

Power Hardware-in-the-Loop-Based Anti-Islanding Evaluation and Demonstration

Schoder

Langston

Hauer

et al. 2015

Self Cite

View full text Add to dashboard Cite

onto the distribution system is the ability of PV inverters to (1) detect islanding conditions (i.e., when the distribution system to which the PV inverter is connected becomes disconnected from the utility power connection) and (2) disconnect from the islanded system within the time specified in the performance specifications outlined in IEEE Standard 1547. This condition may cause damage to other connected equipment due to insufficient power quality (e.g., over-and under-voltages) and may also be a safety hazard to personnel that may be working on feeder sections to restore service. NREL teamed with the Florida State University (FSU) Center for Advanced Power Systems (CAPS) to investigate a new way of testing PV inverters for IEEE Standard 1547 unintentional islanding performance specifications using power hardware-in-loop (PHIL) laboratory testing techniques.The first project objective was to evaluate the suitability of PHIL laboratory testing techniques for performing IEEE Standard 1547/UL 1741 unintentional-islanding tests and to compare the results to traditional testing techniques that require highly specialized resistive, inductive, and capacitive discrete load banks. The second objective was to utilize the flexibility inherent in PHIL simulation techniques for establishing alternate rest-of-system (RoS) conditions to demonstrate the unintentional islanding performance of a PV inverter when connected to alternate circuits and conditions. These two objectives were investigated with alternative PHIL simulation approaches and were intended to determine testing feasibility.The traditional unintentional islanding test methods bear several challenges. First, once islanded, the solar PV inverter tries to destabilize the system to allow it to detect the islanding conditions. As a result, the system is inherently unstable and test results cannot be reproduced in the common sense. Only patterns of behavior may emerge and allow comparison of alternate test approaches. Second, the resonant resistive-inductive-capacitive (RLC) load bank is prone to cause high levels of harmonic currents in cases where the supply voltage contains harmonic components. Furthermore, the supply voltage harmonic content may depend on the day and time of the day, and therefore cause different levels of harmonic currents to be recorded in experiments before islanding. Third, the discrete RLC load bank components are not ideal and have tolerances that will lead to mismatched resistive and reactive power components. The PHIL approach does not have this limitation; the experimenter can perfectly match ideal inductive and capacitive components, and even change component values during operation, thereby greatly reducing the time it takes to modify test conditions. The adequacy of the RLC load-based testing for unintentional islanding has been questioned many times-as has the corresponding quality factor or range of quality factors. Points under debate have included methods of estimating realistic load parameters, as well as the possibility of inc...

show abstract

“…[36]- [39], [43]- [46], [51]- [53], [56], [62], [63], [66], [69], [70], [72], [73], [78], [83]- [85], [87]- [89], [99], [100]- [116] Use of power hardware in the loop (PHIL) scheme [17], [49], [36], [81], [52], [67], [91], [112], [114], [117]- [120] Use of Intelligent Electronic Devices (IEDs) for measurement, monitoring, and control. [19], [28], [49], [42], [43], [84], [54], [88], [61], [75], [97], [98], [101], [71], [121]- [123] Use of power amplifiers to simulate power signals [17],…”

Section: Real-time Simulation Challenges and New Trends For Protectiomentioning

confidence: 99%

Current Status and Future Trends in Protection, Control and Communications Testing in Electrical Grids using Real - time Simulation

Gómez-Luna¹,

Candelo-Becerra²,

Sáenz³

2018

JESTR

View full text Add to dashboard Cite

In recent times, real-time simulation has been used to validate the testing and design of protection, control, and communications systems prior to their commissioning in the field, which has improved the reliability and security of the commissioning processes for electrical systems. This paper reviews the state-of-the-art and future trends in protection, control, and communications testing of electrical grids using real-time simulation. In addition, a summary is presented in which all the works and technologies mentioned are listed with the purpose of identifying new challenges in the proposed topic. Finally, future trends related to the use of real-time simulation for evaluating protection, control, and communications schemes are presented. Real-time simulation is very useful due to the increasing complexity of modern electrical power systems, therefore, it is necessary to use this kind of tool to facilitate field testing, avoid unnecessary work, and reduce costs for clients.

show abstract

Implementation and validation of advanced unintentional islanding testing using power hardware-in-the-loop (PHIL) simulation

Cited by 17 publications

References 14 publications

Testing advanced photovoltaic inverters conforming to IEEE standard 1547 - Amendment 1

Testing advanced photovoltaic inverters conforming to IEEE standard 1547 - Amendment 1

Power Hardware-in-the-Loop-Based Anti-Islanding Evaluation and Demonstration

Current Status and Future Trends in Protection, Control and Communications Testing in Electrical Grids using Real - time Simulation

Contact Info

Product

Resources

About