Environmental Issues and Management for Hydropower Peaking Operations  

作　　者：Helen Locher 

机构地区：[1]Hydro Tasmania, 4 Elizabeth St, Hobart, Tasmania, Australia

出　　处：《Small Hydro Power News》2005年第81期15-19,共5页小水电新闻（英文版）

摘　　要：Many hydropower plants are operated as peak generators or frequency controllers, because they can change their output quickly to follow the fluctuating power demand. When meeting peak load requirements, a power station is turned on at a particular time during the day, generates power at a constant load for a certain number of hours, and is then turned off or set to a different load for another time period, resulting in a high variability inflow discharges. Where reservoir hydro schemes are operated primarily to provide peak load services, there are particular environmental risks that should be considered in any environmental impact assessment. At a minimum these should focus on water quality, fluvial geomorphology, riparian vegetation, macro-invertebrate and fish communities underpinned by a sound hydrological analysis. Frequent temperature changes may occur downstream of a peaking power station; increased seepage-induced erosion of riverbanks due to frequent water level drawdowns; and impacts to macro-invertebrate and fish communities due to rapid and frequent in channel habitat conditions. With a sound understanding of the potential environmental issues, there are strategies that can be employed at the siting and design stage to minimize or mitigate these risks, including but not limited to minimum environmental flows, ramping rules, utilization of a re-regulation storage and localized treatment works.

关 键 词：HYDROPOWER ENVIRONMENTAL peaking HYDROPEAKING MITIGATION 

分 类 号：TM612[电气工程—电力系统及自动化]