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_c112530 _d112530 |
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003 | IE-CoIT | ||
005 | 20181024132821.0 | ||
008 | 181022s2018 ie ||||| |||| 00| 0|eng|| | ||
040 | _aIE-CoIT | ||
082 | 0 | 4 | _aTHESES PRESS |
100 | 1 |
_9125529 _aCowhey, Eoin _eauthor |
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245 | 1 | 0 |
_aControlled switching of reactive loads & commissioning regimes / _cEoin Cowhey. |
264 | 1 |
_aCork : _bCork Institute of Technology, _c2018. |
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300 |
_axiv, 142 pages : _billustrations (chiefly color), tables _c30 cm + _eCD ROM (4 3/4 in.) |
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336 |
_atext _btxt _2rdacontent _3book |
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336 |
_atext _btxt _2rdacontent _3CD-ROM |
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337 |
_aunmediated _bn _2rdamedia _3book |
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337 |
_acomputer _bc _2rdamedia _3CD-ROM |
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338 |
_avolume _bnc _2rdacarrier _3book |
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338 |
_acomputer disc _bcd _2rdacarrier _3CD-ROM |
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490 | 0 | _aM.Eng - Electrical & Electronic Engineering | |
502 |
_aThesis _b(M.Eng) - _cCork Institute of Technology, _d2018. |
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504 | _aBibliography: (pages 135-137) | ||
520 | 3 | _b'Switching is a vital task in any power system for ensuring its safe and reliable operation. Switching may be necessary for fault clearance, to ensure wider system stability and to prevent damage to plan. It is essential for isolation, to allow technicians to carry out maintenance tasks safely. Also, switching of reactive loads such as shunt capacitor banks and shunt reactors, is crucial for controlling system voltage. Switching of some loads however, may produce voltage transients and heavy transient inrush currents which can impact on wider system power quality, impact customers and cause damage or deterioration of the insulation of HV equipment. Therefore, it is important to provide some form of measure to control or mitigate transients caused by switching. The main control measures include: metal oxide surge arrestors, pre-insertion resistors, current limiting reactors and synchronised or controlled switching. Controlled switching is the favoured solution for frequently switched loads such as reactive plant, for economic benefits and as it reduces transients in the first instance. Controlled switching is defined as the use of electronic equipment to control the making or breaking of high voltage circuit breakers at pre-determined points on the system voltage and current waveforms. It has been implemented in Ireland for over 30 years for the energisation of shunt capacitor banks. Over the last two years, the benefits of controlling switching for different applications has become every more apparent, with increased use such as switching of transmission shunt reactors and the energisation of large power transformers, particularly in remote areas of the network such as wind farm interfaces. The aim of this thesis is to provide a complete overview of the stages concerned in implementing controlled switching schemes, from examining the impacts of switching certain loads, to performing systems studies, up to site commissioning stage. The research in this thesis looks at both the theory and practice. It draws together the published work, manufacturers guidelines, international standards and simulation results, to give the total awareness of the issues involved in reactive load switching and commissioning regimes. The various solutions and strategies associated with controlled switching schemes are examined, to ensure that the best and most economical solution has been implemented. Several recent projects where controlled switching has been implemented for switching of transmission reactors and power transformers are also investigated'. Abstract | |
590 | _aCD available at desk. | ||
650 | 0 |
_936645 _aElectric power systems _xControl |
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650 | 0 |
_9125531 _aElectric reactors, Shunt |
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650 | 0 |
_945336 _aSwitching power supplies |
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942 | _2ddc |