Electric Power Consumption Mode Analysis of UHVDC outside Sending to Large Area of Power Grid

doi:10.3969/j.issn.1000-7229.2016.01.013

Abstract

Abstract:

With the development of interconnected grids and the increase of trans-regional transmission trading, the power outside sending to large area is faced with the problem of electric energy consumption optimization configuration. Based on this, we propose four electric power consumption modes of the power outside sending to large area by UHV DC: placement consumption, consumption according to the thermal power installed capacity ratio of each province, consumption according to the load ratio of each province, and consumption according to the ratio of the load to the electrical distance between load centers and placement of UHV in each province. Then, we define the comprehensive economic index with considering electricity price and carbon emission, and use thermal power replacement rate and thermal power output rate for the quantitative assessment of the consumption modes. An example of the power outside sending to central China power grid as large area by the Hami-Zhengzhou UHV DC is taken to be analyzed. Finally, we propose the corresponding consumption mode among the respective provinces based on different transmission capacity, wet and dry conditions and load space, which can provide an effective basis and a quantitative means of decision-making for regional power grid dispatching sector.

Key words: trans-regional transmission, large power grid, electric power consumption, comprehensive economic index, thermal power replacement rate, thermal power output rate

CLC Number:

TM 711

BAI Shunming, YANG Dongjun, SHENG Yao, ZHANG Yinya, DING Jianyong, XIONG Wei. Electric Power Consumption Mode Analysis of UHVDC outside Sending to Large Area of Power Grid[J]. Electric Power Construction, 2016, 37(1): 84-91.

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