Applied Research On The Voltage Exceeding Limits Of The End Of Grid

As an important index of power system operation, voltage has very important meaning. With the improvement of transmission equipment, it is easy to realize transmitting power at large capacity in a long way. However, equipment in distribution network is not as advanced as in transmission network. The problems of voltage exceeding limits happen at times which affect power quality and cause inconvenience of power users.In this Thesis, operation actuality of Nanjing distribution network is surveyed and voltage exceeding limits problems are classified. Reasons of voltage exceeding limits problems are also researched and relevant solutions are proposed. The engineering practice shows good effects and the paper content shows below:Firstly, operation actuality of Nanjing distribution network is surveyed and voltage exceeding limits problems are discussed. On this basis, relative solutions are designed and implied in engineering showing great effects which can be theory base of eliminating voltage exceeding limits problems.Secondly, according to reasons resulting in voltage exceeding limits problems, management plan is discussed and designed from aspects of monitoring, analyzing, solving, improving technique and equipment. So voltage quality of terminal power grid can be guaranteed.Lastly, on basis of voltage exceeding limits problems, frame of management and technology are researched. Technique frame are designed from hardware equipment and platform architecture which can help to realize engineering appliance of solving voltage exceeding limits problems technique platform.