二级负荷

PID完成区域电网内的二级负荷频率控制，区域控制偏差作为有2个小波神经元的神经网络输入，输出用于共同控制负荷频率稳定。

Within an area , 2-loop LFC is implemented by PID control , while the area control error is applied as inputs for wavelet neural network to stabilize frequency .

对二级用电负荷采用两回线路供电。

Class II electric loads are powered by double-loop circuit .

空调二级泵系统负荷侧水力管网的优化分析

Optimization Analysis of the Hydraulic Pipe-network at Load Side for Primary-secondary Pumping Chilled - water System in Air-conditioning

方法对76例明确诊断为糖尿病Ⅱ型的患者，进行二级梯运动负荷试验后，经多普勒声像仪测定下肢踝肱动脉比及血流动力学指标。

Methods 76 patients diagnosed as having type-2 diabetes mellitus underwent two-step exercise test . Doppler ultrasonography was performed to determine the ratio of malleolar / brachial artery diameter in lower extremities and hemodynamic parameters afterwards .

二级模糊因素的负荷预测线性回归法

Liner Regression Method of Two-layer Fuzzy Factors for Load Forecasting

二类建筑应按二级负荷的两回线路要求供电。

II construction should be two two-circuit transmission line load power requirements .

最后，针对空调负荷的动态变化，以二次泵能耗为目标，兼顾水系统管网的不平衡度、可调性以及稳定性，对二级泵水系统负荷侧管网进行了结构优化和动态运行优化。

Aiming at the dynamic load changes , using the secondary pumping energy consume as a target , considering the pipe-network of unbalance rate , adjustability and stability , the structure optimization and dynamic optimization in system circulation of the pipe-network is accomplished in the thesis .