Quality analysis of electricity supply from small hydro power plants with Banki and pump turbines

Kral, Martin; Goňo, Radomír; Moldrik, Petr; Gono, Miroslava

doi:10.1109/epe.2015.7161200

Cited by 2 publications

(1 citation statement)

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“…When frequency event occurs, triggered by the sudden change in demand power, and due to the presence of DC link which decouples the grid from the LFAC, the voltage at grid is marginally affected as shown in Fig.3.a. In addition, the frequency of the grid is at its nominal level as shown in Fig.3.c, which ensures that the grid is not influenced by this frequency event and electricity quality of grid meets requirements in terms of frequency and voltage stability [23].…”

Section: B Resultsmentioning

confidence: 99%

Frequency stability analysis in low frequency AC systems for renewables power transmission

Dong

Attya

Anaya‐Lara

2017

2017 6th International Conference on Clean Electrical Power (ICCEP)

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The foreseen high penetration levels of wind energy will have serious implications on frequency stability, hence developed control methods of wind turbine and alternative technologies including energy storage should enable the provision of frequency support by wind power. Active research is ongoing to investigate the possibility of collecting and transmitting offshore wind power through low frequency alternating current systems (LFAC). This paper develops a novel method to enhance frequency support capability of generators connected to a LFAC system. The leveraged frequency regulation ability of the generators at LFAC system is emphasized. The voltage is proportional to the frequency of the LFAC system, so that the transformers can be protected when frequency drops. Then the generators at LFAC system acquire sufficient time for frequency regulation. In this paper, a hydro generator at LFAC system is regarded as an energy storage plant, which is connected to the LFAC system rather than normal frequency grid.

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Section: B Resultsmentioning

confidence: 99%