在实时定价率结构下，运行冷冻水存储系统的重点是确定水箱充放电的最佳开始和结束时间。本文提出了一种确定最优操作的简单方法。采用基于线对水效率的正向模型模拟冷水机组性能，以反映不同冷水机组部分负荷比下的性能变化。水箱状态用冷冻水量描述，水箱存量变化用水箱冷冻水流量描述，以确保整个循环的一致性。 利用现有的预测模型对电价进行了模拟。循环冷冻水delta-T采用线性回归模型建模。通过一个示例性的冷冻水储存系统对该方法进行了评估。仿真结果表明，与无储能的运行成本相比，采用最优储能运行的年电费成本可以降低近三分之一，其中大部分在夏季实现。通过实施恒定的充放电循环开始和结束时间，提出了一种接近最优的运行策略。统计结果表明，每年的计费成本节约仅减少2%。 2%.引文:内华达州拉斯维加斯ASHRAE Transactions第117卷第1部分

Under a real-time pricing rate structure, the focus of operating a chilled-water storage system is to determine the optimal starting and ending time of charging and discharging the tank. This paper proposes a simple method to determine the optimal operation. The chiller plant performance is simulated with a forward model based on wire-to-water efficiency to reflect the performance change with different chiller part-load ratios. The tank state is described with chilled-water volume, and the tank inventory change is described with tank chilledwater flow rate to ensure consistence in the whole cycle. The electricity price is simulated with an existing prediction model. The loop chilled-water delta-T is modeled with a linear regression model. This method is evaluated with an illustrative chilled-water storage system. Simulation results show that, compared to the operation costs without storage, the annual electric billing costs with the optimal tank operation can be reduced by almost one-third, the majority of which is achieved in summer. A near-optimal operation strategy is proposed by implementing the constant starting and ending time of charging and discharging cycles. The statistic results show that the annual billing cost savings only decrease by 2.2%.