Response Of Time-of-Use Electricity Pricing Policy To Load Characteristic

TOU (Time-of-use) electricity pricing is one of the most important approaches in DSM (Demand Side Management) , which offers a reasonable pricing policy. Power supply corporation confirms peak and valley period of time according to load characteristic of power network. This pricing varies with different period of time. It can lead the power consumers to change their power consuming modes so as to be beneficial to the load shifting. TOU electricity pricing brought into effect in NanJing in 1999. The issue of how effect this pricing exerts, how to dig its potential and how to confirms peak and valley period of time is what this thesis studied. At the same time the load analysis and forecasting is more difficult. All these things are researched in this paper.Firstly, a reasonable method of analyze quantificationally load characteristic of industries is advanced. This method is feasible according to comparing emulational curve with real curve. Thus it can be used in load characteristic analysis of six industries and residents. Secondly, thesis analyzes the changes of six industries' load curve from TOU electricity pricing put in practice to peak-low pricing proportion raised. Then thesis analyzes the response of time-of-use electricity pricing policy to residential load characteristic of NanJing city and estimates the effect on this policy. 300 MW peak load will be shifted in summer of 2004, which economizes 1800 million that is used to build firepower plant.In the last, thesis makes scientific researches on TOU electricity pricing in foreign countries. Some conclusions are educed. The first is that residential TOU electricity pricing is an effective measure to reduce peak load in summer. The second is that TOU electricity pricing and seasonal pricing should be combined, peak-low period of time should be set off detailedly, optional marked price sheet should be listed. The third is that rewards and punishment measure should be considered. The last is that spot price is a development trend.