Indeed , psychological levels have come and gone without significant movements in the foreign exchange and money markets , despite the abundance of comments , some quite emotional , at the retail level 这方面工作的成效至今已很明显：尽管在零售层面的评论纷陈，有时甚至变得情绪化，但所谓的心理关口始终没有在外汇及货币市场造成太大波动。
Hydro - turbine governing system is a nonlinear and time mutative system that is usually conducted following analysis and calculations : calculation of regulation guarantee under transiting process of acute fluctuation ; dynamic analysis under small fluctuation 水轮机调节系统是非线性和时变性的系统,其分析计算分为:大波动过渡过程下的调节保证计算;小波动情况下的动态分析。
The oversimplified models can not reflect the mutual effect of hydraulic system and power system , and they may cause irrational conclusions when they are used in the studies on middle or long term stability , resynchronization of hydro turbine and generator and large - disturbance surge tank system that relate closely to the mutual effect of hydraulic system and power system or the auto governing 采用这种水或电的单方面简化模型不能准确反映水力系统与电力系统的耦合作用，对于诸如电力系统中长期稳定、水轮发电机组再同步、调压井系统大波动稳定等这些与水电耦合和自动调节作用密切相关的问题的研究，可能导致不合理的结论。
For the sake of the research about hydroelectric interfere among machines , the article utilized the simulink in matlab as simulating tool , meanwhile established the simulating model about two high head diversion water turbines regulation system in violent fluctuating pressure sharing one head race tunnel and surge tank and one penstock . then calculated the load rejection transition process by means of the real parameters of a hydro power station , analysed the interfere of hydro power station safety and stable nenring brought by hydroelectric interfere and put forward a series of measures that lightening the hydroelectric interfere 为了研究机组间的水力干扰，本文采用matlab下的simulink作为仿真工具，建立共用有压引水管道、调压井、压力主管的两台高水头引水式水轮机调节系统大波动时的仿真模型，引入实际电站的参数，对甩负荷过渡过程进行了仿真计算，分析水力干扰对电站安全、稳定运行所造成的影响，并提出了一系列减轻水力干扰的措施。
Based on a algorithm integrated by the method of characteristics for the pressurized pipeline and the analysis with the state equations , the stabilities during the transient processes of large fluctuation , tiny fluctuation and hydraulic disturbance for the hydropower station after extension are emphatically analyzed herein , and then a reliable basis for the design and the safe operation of the similar hydropower stations is given incorporated with the specific analysis made on the actual as well 基于综合有压管道特征线法和状态方程分析的联合算法，着重研究扩建增容引水式水电站的大波动、小扰动和水力干扰稳定性问题，并且结合实际算例作具体分析，为类似电站增容方案的设计和安全稳定运行提供可靠的依据。
In this case , when one of the machines be placed into the transition process of the vident fluctuating pressure for some kind of reason , the other machines would be affected become of the fluctuating pressure in the diversion system and drainage system of water in upstream and downstream which use the same one surge tank and the same one penstock with the machine , so the other machines would be put into transition process of fluctuating pressure , and become a kind of hydroelectric interfere 在高水头引水式水电站中，通常几台机组共用同一调压井，且共用压力主管。在这种情况下，当其中一台机组由于某种原因处于大波动过渡过程，则其在电站上下游引、尾水系统中引起的压力变化必然会影响与其共用调压井和压力主管的其它机组，使其它机组也处于过渡过程，形成一种水力干扰。
