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基于改进BP神经网络的空调水系统管网泄漏诊断方法 被引量:3
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作者 张宇航 李铮伟(指导) 《建筑节能(中英文)》 CAS 2022年第2期9-14,59,共7页
基于梯度下降法的标准BP神经网络往往存在收敛速度慢、稳定性差且易陷入局部极值等问题,为此提出了一种基于L-BFGS算法改进的BP神经网络的空调水系统管网泄漏诊断方法。当系统监测到补水流量超过设定阈值时,系统压力传感器实时监测数据... 基于梯度下降法的标准BP神经网络往往存在收敛速度慢、稳定性差且易陷入局部极值等问题,为此提出了一种基于L-BFGS算法改进的BP神经网络的空调水系统管网泄漏诊断方法。当系统监测到补水流量超过设定阈值时,系统压力传感器实时监测数据经过一定的数据处理输入管网诊断模型,模型输出即为具体的发生泄漏的管段编号。为了获得训练模型所需的学习样本,使用Dymola系统仿真平台搭建泄漏管网模型,通过该模型即可实现对不同泄漏工况的管网水力仿真。案例结果表明:基于改进BP神经网络的管网泄漏诊断模型在训练中速度和诊断精度两方面的性能表现均显著优于标准BP神经网络模型,该方法能够对空调水系统管网中发生泄漏的管段编号进行准确定位。 展开更多
关键词 空调水系统管网 泄漏诊断 BP神经网络 L-BFGS算法
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中央空调冷水管网水力平衡技术的发展 被引量:2
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作者 廖伟初 《广东建材》 2011年第6期54-57,共4页
本文论述分析了中央空调冷水管网水力平衡技术的种类和发展,并分析了不同水力平衡技术的特点,指出与计算机控制相结合的按能量分配的动态水力控制技术是以后水力平衡发展的一个方向。
关键词 中央空调冷水管网 水力失调 静态水力平衡 动态水力平衡
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老纺织企业空调制冷系统的改造 被引量:1
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作者 田长明 《郑州纺织工学院学报》 2001年第3期59-61,共3页
对老纺织企业制冷能量缺口较大、设备老化、系统存在供水量严重不足等问题进行了分析 ,提出了更新制冷设备 ,在原管网基础上加大送水管网直径、增加空调室喷嘴个数、增大回水地沟过水面积等改造措施 。
关键词 纺织企业 制冷系统 技术改造 空调管网
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Load Management Scheme Using Air Conditioning Electric Power Consumption and Photovoltaic Power System Generation
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作者 Zvonimir Klaic Damir Sljivac Kresimir Fekete Zorislav Kraus 《Journal of Energy and Power Engineering》 2014年第11期1926-1932,共7页
In the last few decades, in the world and also in the European Union, considerable resources had been invested in the rapid development of renewable energy sources and distributed generation in general. At the same ti... In the last few decades, in the world and also in the European Union, considerable resources had been invested in the rapid development of renewable energy sources and distributed generation in general. At the same time, power consumption is continuously increasing, and consumers are becoming more complex, which ultimately requires new investments in the distribution network. Concept of smart grids is generally accepted as a possible solution. Smart grid is a concept with many elements, where monitoring and control of every element in the chain of production, transmission, distribution and final consumption enable much more efficient delivery and use of electricity. One of the elements of smart grid efficiency is the ability of real-time demand-supply balancing. This balancing is carried out by monitoring of consumption and redistribution of electricity among individual end users, according to their needs. The aim of this paper is creating algorithm for real-time load management using power measurements. Algorithm for real-time load management at the ETFOS (Faculty of Electrical Engineering in Osijek), Croatia is created based on measurements of photovoltaic power plant production, the power consumption of air conditioning system and the faculty building total electricity consumption. Expected result of real-time re-dispatching of air conditioners consumption, depending on the level of electricity production in photovoltaic power plant is decreasing peak demand of the faculty. 展开更多
关键词 Photovoltaic power plant smart grid load management air conditioning system power measurements.
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