Emergy analysis of a small hydropower plant in southwestern China
Emergy analysis of a small hydropower plant in southwestern China
复制标题
西南某小水电站能值分析
DOI：
10.1016/j.ecolind.2013.09.037
复制
发表时间：
2014-03
影响因子：
6.9
通讯作者：
Wang Chanbo
中科院分区：
文献类型：
--
作者：
Zhang Lixiao;Pang Mingyue;Wang Chanbo
尽管其环境绩效和可持续性尚不清楚，但小水电在中国已经历了快速扩张。通过能值分析，本研究旨在评估环境影响和相对可持续性在贵州省，这是位于中国西南部，在2010年的一个小水电厂。该分析包括与大型水电项目进行的类似评估进行比较：泰国湄公河上的两个水电站大坝，韩国的一个多用途大坝和中国的三峡大坝。能值产出率（EYR）、环境负荷率（ELR）和能值可持续性指数（ESI）表明，小水电系统的总体环境绩效优于大型水坝。然而，对环境敏感的设计并不自动意味着光明的未来。案例研究的小水电由于财务亏损而濒临破产，这可以归因于当前0.23 CNY/kWh的并网成本。能值交换率（EER）定量地说明了从能值平衡角度考虑的公平电价为0.4 CNY/kWh。敏感性分析表明，小水电系统运行不稳定的固有缺陷，极大地影响了小水电厂的环境性能。
Although its environmental performance and sustainability remain unclear, small hydropower (SHP) has undergone rapid expansion in China. Through emergy analysis, this study aimed to assess the environmental impact and relative sustainability of a small hydroelectric plant in Guizhou Province, which is located in southwestern China, in 2010. The analysis included a comparison with similar evaluations that were conducted for large hydroelectric projects: two hydropower dams on the Mekong River in Thailand, one multipurpose dam in Korea, and the Three Gorges Dam in China. As indicated by the emergy yield ratio (EYR), environmental loading ratio (ELR), and emergy sustainability index (ESI), the overall environmental performance of the SHP system examined in this research surpassed the environmental performance of large dams. However, environmentally sensible designs do not automatically imply a promising future. The case-study SHP is on the verge of bankruptcy due to financial losses, which can be attributed to the current grid-connected cost of electricity of 0.23 CNY/kWh. The emergy exchange ratio (EER) quantitatively demonstrates that the fair price of electricity from the perspective of emergy balance is 0.4 CNY/kWh. The sensitivity analysis reveals that the inherent defect of unstable operation, which is exhibited by the SHP system, greatly affects the environmental performance of a SHP plant.
登录
查看更多内容
影响因子：
8.7
作者：
Lixiao Zhang;S. Ulgiati;Zhifeng Yang;Bin Chen
通讯作者：
Lixiao Zhang;S. Ulgiati;Zhifeng Yang;Bin Chen
影响因子：
12.7
作者：
J. Haddon
通讯作者：
J. Haddon
影响因子：
4.8
作者：
J. Phillipson;H. Odum
通讯作者：
J. Phillipson;H. Odum
影响因子：
3.8
作者：
Lixiao Zhang;Qiu-Hong Hu;Changbo Wang
通讯作者：
Lixiao Zhang;Qiu-Hong Hu;Changbo Wang
影响因子：
11.1
作者：
Lixiao Zhang;B. Song;Bin Chen
通讯作者：
Lixiao Zhang;B. Song;Bin Chen