Evaluation of anti-islanding schemes based on nondetection zone concept

Ye, Z.; Kolwalkar, A.; Zhang, Y.; Du, Pengwei; Walling, R.

doi:10.1109/pesc.2003.1217718

Cited by 43 publications

(59 citation statements)

References 5 publications

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“…In these situations, the NDZs and the shape of the PIAR will be different from the ones presented in this paper, since NDZs are dependent on the DG technology, protection devices and requirements. This can be observed in [16], where NDZs were obtained for induction generators, and in [17,18], which shows NDZs obtained for inverter-based DGs. It is worth mentioning that the accuracy of the PIAR method depends on the system load characterization, because according to [15], voltage dependent loads tend to alter the NDZ shape.…”

Section: Discussionmentioning

confidence: 69%

“…The main idea behind the PIAR method comprises the union between protection requirements against abnormal frequency variation, and the non-detection zones associated with frequencybased relays anti-islanding performance [15,17]. The abnormal frequency variation requirements are given in Table 1, from which the clearing time presented in the third column is the time between the start of the abnormal condition and the disconnection of the generator.…”

Section: Power Imbalance Application Region-conceptsmentioning

confidence: 99%

“…The non-detection zones of frequency-based relays are areas in the reactive power imbalance versus active power imbalance plan ( Q × P), which define operating conditions that cause the protection devices to fail to detect islanding [15][16][17]. They are strongly dependent on the required islanding detection time, relays types and settings, and type of the distributed generator (synchronous, inverter-based or asynchronous).…”

Section: Power Imbalance Application Region-conceptsmentioning

confidence: 99%

“…The new method, called Power Imbalance Application Region (PIAR) is based on the non-detection zone concept [15][16][17], and defines an area in the power mismatch plan (reactive power imbalance versus active power imbalance plan), within which a relay non-detection zone must be located, if both protection requirements should be met. Non-detection zones have been used as an effective technique to evaluate the performance of anti-islanding protection schemes in machine-based [15,16] and inverter-based DG [17,18]. In this work, they are also employed as a method to adjust anti-islanding protection schemes.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Power imbalance application region method for distributed synchronous generator anti-islanding protection design and evaluation

Vieira

Salles

Freitas

2011

Electric Power Systems Research

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Section: Discussionmentioning

confidence: 69%

Section: Power Imbalance Application Region-conceptsmentioning

confidence: 99%

Section: Power Imbalance Application Region-conceptsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Power imbalance application region method for distributed synchronous generator anti-islanding protection design and evaluation

Vieira

Salles

Freitas

2011

Electric Power Systems Research

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“…It can either be represented in terms of power mismatch or in terms of the R, L, and C of the load. In [6,33], an approximate representation of the NDZ for OVP/UVP was derived. An exact and accurate representation of the NDZ is presented in this part of paper.…”

Section: Non-detection Zone (Ndz)mentioning

confidence: 99%

Islanding detection for inverter-based DG coupled with using an adaptive neuro-fuzzy inference system

Hashemi

Ghadimi

Sobhani

2013

International Journal of Electrical Power & Energy Systems

109

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Islanding Detection

2010

Grid Converters for Photovoltaic and Wind Power Systems

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A higher penetration of distributed power generation systems (DPGSs), involving both conventional and renewable technologies, is changing the power system face. There is a clear evolution towards active grids that could include a significant amount of storage systems, could work in island mode and could be connected through flexible transmission systems. This complex scenario will put different requirements on the DPGS units depending on their size and on their level of integration with the power system. Thus the monitoring of the grid condition will always be a crucial feature of the DPGS units at every level. The detection of a possible island condition will always be important in a power system with a significant amount of DPGS.Typically in a low-power DPGS like, for example, PV systems, this feature is defined as an 'anti-islanding requirement' in order to highlight the request of the utility operator, as pointed out in Chapter 2, that the DPGS should disconnect in case the main electric grid should cease to energize the distribution line. A higher power DPGS, typically wind plants, have completely different requirements and generally benefits of communication systems and a supervisory control that interact with the utility operator in view of making the DPGS contribute to the stability of the grid. Here the latest grid codes require low-voltage ride-through capability, meaning that they should stay connected during grid faults, which is quite opposite for the PV systems. Hence islanding detection can be considered a requirement only for low-power DPGSs. However, as already pointed out, the power system is evolving and the future scenario may consider the presence of a smart micro-grid (SMG) usually operated in connection to distribution grids but with the capability of automatically switching to a stand-alone operation if faults occur in the main distribution grid, and then reconnecting to the grid. Since it is not possible to predict the level of connection and the reliability of the information exchange among the different players of this future scenario, the detection of islanding can be considered as an important feature, requested in some cases and optional in others.In this chapter islanding detection will be treated with attention paid to the consequences of an uncontrolled islanding (amplitude and frequency variation of the grid voltage, which are usually the first signs of the island condition) and to the performances of the islanding detection methods: reliability, selectivity and minimum perturbation. Ideally, the methods should be able

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Evaluation of anti-islanding schemes based on nondetection zone concept

Cited by 43 publications

References 5 publications

Power imbalance application region method for distributed synchronous generator anti-islanding protection design and evaluation

Power imbalance application region method for distributed synchronous generator anti-islanding protection design and evaluation

Islanding detection for inverter-based DG coupled with using an adaptive neuro-fuzzy inference system

Islanding Detection

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