求翻译：以往的确定性方法主要针对TTC的计算，而没有考虑各种不确定性因素对ATC的影响，但若要充分计及电网不确定性，计算各种可能情况下的ATC对于运行调度部门的在线计算既没有必要也不能满足速度要求，因此合理考虑随机因素，给出一定风险指标下的ATC将对在线运行调度更有指导意义。是什么意思？

Previous deterministic methods for TTC calculation, without taking into account various uncertainties on the impact of ATC, but the power to take fully into account the uncertainty, the calculation of ATC all possible dispatch department for the operation of online calculation is neither necessary n

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Formerly the indeed qualitative method mainly aimed at TTC the computation, but has not considered each kind of uncertainty factor to ATC the influence, if but took into account the electrical network uncertainty fully, calculated in each kind of possibility situation ATC already not to be unnecessa

Deterministic method is mainly used for previous TTC calculation, without taking into consideration all the uncertainty factor impact on ATC, but to take full account of uncertainty of power network, calculate all possible cases of the ATC for running online calculation of the scheduling Department

Previous deterministic methods for TTC calculation, without taking into account various uncertainties on the impact of ATC, but the power to take fully into account the uncertainty, the calculation of ATC all possible dispatch department for the operation of online calculation is neither necessary n