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分析了所采用的协调控制系统的原理,剖析了机组在进行负荷变化时的特点,找出了机组投运AGC的差距,采取合适措施对协调控制逻辑进行了改造,对机组升降负荷能力进行了试验,总结了投入AGC的情况,对今后新建机组提出了建议。 相似文献
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阐述了水电厂应急体系的建设和完善,应急体系的建设体现了安全管理中预防为主的原则,促进了安全责任的细分与落实,完善了危险辨识,促进了事故演练和事故响应,对改善水电厂多年来形成的安全管理起到了促进作用。 相似文献
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薛飞 《上海电机学院学报》2009,12(4):276-278,300
介绍了汽车前照灯清洗器的工作方法,分析了其工作原理,并针对某种车型的前照灯清洗器喷嘴进行了主要结构参数的设计。建立了清洗器三维计算模型,做了喷射速度的仿真分析,仿真结果为清洗器的设计与优化提供了重要的参考依据。 相似文献
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介绍了5G技术在火电领域的应用,阐述了煤场斗轮机、码头卸煤机等设备进行5G升级改造的必要性,开发了基于5G通信技术的智能化控制系统,实现了斗轮机、卸煤机的无人值守自动化操控,提高了作业效率,节省了人力成本,降低了人因失误风险,提升了设备的本质安全。 相似文献
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分析了钢铁企业搭建能源管理系统的原因。介绍了能源管理系统的硬件网络,阐述了数据库支持、能源管理与决策、系统备份的实现方式与方法。解释了软件平台系统,总结了能源管理系统的接口原则及接口方式,描述了与电力系统、动力系统、其他EMS需要实时监控系统、给排水系统、生产管理系统的接口方式。给出了在某钢铁企业的实际应用效果。 相似文献
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CY3型液压机构工作原理及故障处理 总被引:1,自引:0,他引:1
阐述了CY3型液压机构的工作原理,对液压机构发生的故障原因进行了分析,采取了相应的处理措施.另外,对液压系统泄漏进行了分类,提供了有效的判断方法,有利于提高运行和检修人员查找和排除故障的能力. 相似文献
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论述了各种无线技术标准及标准的融合,介绍了国内外无线控制技术的应用情况,分析了无线控制技术的经济性,对无线控制技术在电厂的应用进行了展望,并提出了应用建议. 相似文献
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本文论述了峰谷电价在调峰,均衡用电负荷、提高发电供电效率等方面的作用,提出了分时电价的设计和实施方法,探讨了峰谷电价的经济杠杆作用和需方管理对调峰,节能和提高现行发供用电各方效率的作用。 相似文献
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为改善火电机组调峰运行的经济性,从调峰方式的选择、一定调峰方式下优化运行、节能降耗基础管理3个层次论述了调峰机组节能降低的措施。 相似文献
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本文应用一个含抽水蓄能电站的系统评价模型及软件,对上海电网2000年调峰电源进行了优化基础上的规划运行分析。文中提出,像上海电网这样的纯火电系统建设燃气机解决调峰问题,具有极大的经济性和可靠性。 相似文献
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This paper introduces a proposed optimization technique POT for predicting the peak load demand and planning of transmission line systems. Many of traditional methods have been presented for long-term load forecasting of electrical power systems. But, the results of these methods are approximated. Therefore, the artificial neural network (ANN) technique for long-term peak load forecasting is modified and discussed as a modern technique in long-term load forecasting. The modified technique is applied on the Egyptian electrical network dependent on its historical data to predict the electrical peak load demand forecasting up to year 2017. This technique is compared with extrapolation of trend curves as a traditional method. The POT is applied also to obtain the optimal planning of transmission lines for the 220 kV of Suez Canal Network (SCN) using the ANN technique. The minimization of the transmission network costs are considered as an objective function, while the transmission lines (TL) planning constraints are satisfied. Zafarana site on the Red Sea coast is considered as an optimal site for installing big wind farm (WF) units in Egypt. So, the POT is applied to plan both the peak load and the electrical transmission of SCN with and without considering WF to develop the impact of WF units on the electrical transmission system of Egypt, considering the reliability constraints which were taken as a separate model in the previous techniques. The application on SCN shows the capability and the efficiently of the proposed techniques to obtain the predicting peak load demand and the optimal planning of transmission lines of SCN up to year 2017. 相似文献
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随机生产模拟传统的等效电量函数法使用的是等效持续负荷曲线,丢失了时间信息,不利于应用在抽水蓄能电站的运行模拟。提出了有效容量分布累积量法用于抽水蓄能电站优化调度的方法,建立基于经济性与可靠性目标函数的调度模型后,利用负荷曲线分解技术对负荷曲线进行削峰填谷,再在时序负荷曲线上应用累积量法进行运算,求出各发电机组发电量和可靠性指标。特点是避免使用等效有效容量分布曲线的尾部信息,可计及负荷预测的不确定性和抽水蓄能机组的强迫停运率。算例结果证明该方法适用于抽水蓄能电站这类时间相关类、给定电量类电源的优化调度。 相似文献
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Yoshiteru Ueki Tetsuro Matsui Hiroshi Endo Tatsuyosi Kato Ryosaku Araya 《Electrical Engineering in Japan》1996,117(3):41-51
This paper presents a peak load forecasting system using multilayer neural networks and fuzzy theory. Electric load forecasting in power systems is a very important task from the perspective of reliability and economic operation. Daily peak load forecasting is one of the basic operations of generation scheduling for the following day. Therefore, many statistical methods have been developed and used for such forecasting even though it has been difficult to construct a proper functional model. The developed system is applied by neural network and fuzzy theory to forecast for daily, weekly and monthly peak load. The system consists of an engineering workstation (EWS) and a personal computer (PC). The EWS is for learning and data-bases, and the PC is for man-machine interface such as forecasting operation. The system has been used since June 1993. The result evaluated with an absolute mean error is 1.63 percent for 10 months. From the results shown here, the system applied by neural network and fuzzy theory has high validity. 相似文献
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在供过于求的电力市场,机组参与调峰日益频繁,且调峰形式多样,有低负荷调峰,有两班制调峰,有长时间停运备用状态调峰,无论哪种调峰,都增大了汽轮机设备的结垢、腐蚀。针对此问题提出了几点建议。 相似文献