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Electric power supply is an independent system in Taiwan currently. That is to say that the electric supply is applied once generated. The electricity is not able to be stored in large quantity. In case of emergencies and contingencies, we can not imported electric supply from abroad. Although 98% of energy of our country relies on import, as to the electric grid construction, it could be built indigenously. This is an alternative way to prevent energy supply from shortage or disruption, and further endanger the national security. In the short term, fossil energy is still the main source of electricity supply and could not be replaced by the even rapidly developed renewable energy in the foreseeable future.
To discuss the characteristics of electricity application in existing micro-grid electricity area, we obtain the fact that the pattern of electricity usage in the hospital is very different from that of other facilities, such as farm, factory, business building and general private residence. Therefore, we have to develop a micro-grid that could fulfill the user-oriented request mentioned above.
In order to improve the current power supply style of our country, namely, “applied once generated”, and to solve the issues of peak power usage, distribution and establishing replacement power supply source are the best ways. Peak power supply needed is provided by the combined local small micro-electric grid into a larger load capacity grid. If these small power supply grids could be replaced by other power sources, then a large load grid for peak time is not necessary.
This essay focuses on power usage load curve of hospital on a basis of various time intervals, i.e., per hour/daily/seasonal, as well as peak/off-peak power allocation.
In coordinate with the research of power supply of micro-electric grid according to the statistics of power usage load curve line and acquire the highest electricity load demanded. Afterwards, we utilize the statistical records with respect to power usage required based on different time interval as mentioned previously. As a result, we regulate the charging and recharging time of lithium batteries in accordance with the power supply required in consideration of the characteristics of all types. .The rechargeable lithium batteries are suitable and flexible to fulfill the power requirement of various situations.
Keywords: peak power supply demanded…”the rest terminologies are ok”Renewable Energy, load cbaracteristic, Micragrid, LI-Ion battery
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