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该文首先采用连续空间函数序列的信号分解方法，建立了动态测试电压、电流和功率的函数序列模型。其次，提出了一种面向时间过程的三幅值键控(ternary amplitude shift keying，TASK)动态测试功率模型，给出了TASK动态功率的产生方案；在此基础上，定义了单向与双向功率的多种动态负荷模式。最后，基于所提出的理论方法，搭建了电能表动态误差测试系统，测试了国内外不同厂家多种电能表的动态误差，验证了TASK动态测试信号模型与测试方法的正确性。“,”Using the signal decomposition method of function sequence in space of C, we established dynamic test voltage, current and power function sequence models. Then a time-process oriented model of ternary amplitude shift keying (TASK) dynamic testing power was proposed, which given a TASK dynamic power generation plan. Based on the TASK power model, a variety of dynamic power modes both in uni-directional power and bi-directional power were proposed. Finally, a dynamic error testing system of electricity meters was constructed. Some electricity meters from different manufacturers are tested in the provided testing system, and the test results were given.