By means of the idea of option transaction a new model to evaluate dynamic economic benefit of pumped-storage station (PS station) is put forward.

借助期权交易的分析思路提出了一种新的评价抽水蓄能电站动态效益的方法。

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Based on the analysis of water rights the concept of the transaction of water rights option is put forward and the exist condition of water rights option is also discussed in the dissertation.

本文在对水权进行分析的基础上，提出水权期权的概念，分析了水权期权存在的条件。

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The paper combined the option theory with the water rights transaction and brings forward the transaction mode of water rights option. The main role of the mode is to avoid the risk of prices.

本文将期权理论与水权交易相结合，提出水权期权交易模式，指出该交易模式具有转移风险、价格发现、交易成本低、方便、高效、安全性强等特点，其主要作用是可以有效地规避水权价格波动产生的风险。

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This allows banks to cover both their forward exchange and option exposures efficiently, with great savings in transaction costs.

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