电量模型标准化和数据智能检测分析技术研究
2017-12-20史雪梅曲向华
史雪梅+曲向华
摘 要: 随着国家智能电网策略的实行,对应智能终端电能计量配套系统也逐步向多功能智能化发展,为此对电量预测模型和电量数据智能检测方面进行分析。建立电量原灰色预测模型,利用支持向量机拟合电量参数,并确定各项权重形成电量标准化模型。电量数据信号检测运用瞬时谐波参数估计法,将数字信号通过卷积运算获取相应带通滤波器的输出信号,在零频处对信号处理后得到对应的谐波分量瞬时参数,实验表明该方法可以提高电网运行效率。
关键词: 智能电网; 电能计量; 电量数据; 智能检测
中图分类号: TN911.7?34; TU178 文献标识码: A 文章编号: 1004?373X(2017)23?0144?03
Abstract: With the implementation of the national smart grid strategy, the corresponding intelligent terminal electric energy measurement system should be developed gradually towards the multi?functional intelligence, therefore, the electricity quantity forecasting model and electricity quantity data intelligent detection are analyzed. The grey prediction model of electricity quantity is established. The support vector machine is used to fit the parameters of electricity quantity, and determine the weight of each item to form the electricity quantity normalized model. The instantaneous harmonic parameter estimation method is used to detect the data signal of electricity quantity. The convolution operation is performed for the digital signal to acquire the corresponding output signal of the band?pass filter, and then the signal is processed at the zero frequency to get the instantaneous parameters of the harmonic component. The experimental results show that the technology can improve the operating efficiency of power grid.
Keywords: smart grid; electricity energy measurement; electricity quantity data; intelligent detection
0 引 言
在欧美发达国家电网智能化飞速发展的带动下,我国电力行业适时地提出建设“坚强智能电网”的发展策略[1]。基于集成、高速双向通信网络而建立的智能电网在国民经济发展、能源生产以及利用、环境保护等诸多方面都表现出了巨大效益。为实现电网的可靠、安全、经济、高效、环境和谐使用的目的,智能电网需要充分运用先进的设备技术、先进的传感和测量技术以及先进的控制方法和决策支持系统技术[2?3]。文献[4]指出作为经济和技术发展的必然产物,智能电网当之无愧的成为当今电力领域中的最大论题之一,其最为重要的环节就是面向智能电网的高级计量系统设计[5?6]。文献[7]提出为了实现电力部门和用户高效双向互动且电力用户能够智能化用电的目标,需要运用一种新型的电能表计量智能终端。……
