具有语音提示,电话查询及自动报警功能的监控系统设计

介绍了由ＰＩＣ１６Ｃ６４单片机和时芯片ＩＳＤ３３１８０实现的语音提示、电话查询及自动报警监控系统的设计,给出了系统框图和硬件电路,并给出了部分程序设计方法。     

交流伺服系统中DSP与上位机的通讯实现

本文介绍了基于ＤＳＰ的交流伺服系统与上位机的通讯,详细介绍了ＤＳＰ串行通讯的硬件接口电路,寄存器设置,软件编程,通讯协议。文中采用Ｃ语言编制了上位机通讯程序,实现了上位机对整个伺服系统的临控。实验结果证明：通过文中设计的通讯接口硬件和基于校验码的通讯协议,简单有效,可以实现上位机对整个伺服系统的可靠监控。     

UPS系统监控软件与网络化管理技术

ＵＰＳ监控软件的设计原理及应用,ＵＰＳ远程管理方法以及适配器的设计。     

一个基于Web的企业标准查询系统的设计与实现

简要介绍了用于创建Ｗｅｂ应用程序的ＡＳＰ技术的特点,提出了一个基于Ｗｅｂ的用ＡＳＰ在Ｉｎｔｒａｎｅｔ上实现 的企业标准数据库查询系统,给出了系统结构、运行环境及查询实现方法。     

国产600MW发电机励磁系统的P.S.S投入运行

介绍了电力系统产生低频振荡的原因及后果、Ｐ．Ｓ．Ｓ的基本原理及参数选择。还叙述了国产６００ＭＷ机组励磁调节器ＨＷＴＡ－６０的Ｐ．Ｓ．Ｓ系统投入。     

一个基于Web的企业标准查询系统的设计与实现

简要介绍了用于创建Ｗｅｂ应用程序的ＡＳＰ技术的特点,提出了一个基于Ｗｅｂ的用ＡＳＰ在Ｉｎｔｒａｎｅｔ上实现的企业标准数据库查询系统,给出了系统结构、运行环境及查询实现方法。     

UPS电源供电系统状态监视仪

介绍了ＵＰＳ电源系统监控仪的应用前景、功能及技术特性;阐述了监控仪的设计原理,供电时间计算方法以及开关模块、监控模块、键盘显示器模块和市电监测模块的设计经验,给出了详细的系统设计原理图。     

应用串行通讯实现基于DSP的电机驱动系统的监控

在Ｗｉｎｄｏｗｓ９５下采用Ｖｉｓｕａｌ Ｂａｓｉｃ ６．０,通过串行通信方式实现微机与电机驱动系统ＤＳＰ控制器之间的监控数据实时交换。     

微机控制晶闸管充电浮充电装置

介绍了运用单片机技术实现的全数字化可控硅充电、浮充电装置的方案,该方案采用了多 Ｃ Ｐ Ｕ 并行运行技术和数字触发技术,不仅可以实现常规模拟充电电机的功能,更可以实现常规充电机不太容易实现的功能,具有智能化程度高等优点。提供两种通信接口（ Ｒ Ｓ２３２ 及 Ｒ Ｓ４２２） 可与远方监控通信,彻底实现对充电设备的遥测、遥信、遥控、遥调等四遥功能,为发电厂、变电站实现综合自动化及真正实现无人值班创造了条件。     

热固性酚醛树脂基SMC

本文介绍了热固性酚醛树脂基ＳＭＣ用酚醛树脂、ＰＦ－ＳＭＣ的制造方法，ＰＦ－ＳＭＣ固化制品的性能和应用．     

串联型电能质量控制器全数字控制系统的研制

串联型电能质量控制器是一种可以有效提高用户端供电质量的电力电子装置。本文应用数字信号处理器(Digital Signal Processor - DSP)设计并实现了串联型电能质量控制器的全数字实时控制，提出了一种适合在定点DSP上实现的空间矢量PWM快速生成算法。实验结果表明所研制的数字控制系统硬件、软件结构设计合理，谐波检测算法和空间矢量PWM算法快速有效，而其控制的串联型电能质量控制器具有良好的电能质量控制性能。     

数字电源控制器与芯片应用

文章对数字电源控制和数字电源管理作了详细的分析,并介绍了数字电源控制的实施方案     

基于高性能单片机的功率直流开关电源的设计

本文基于高性能单片机设计了数字控制的功率直流开关电源。首先介绍了该电源的原理及整体设计方案,其次介绍了部分关键电路的硬件设计,采用软件方式来实现功率直流电源的数字控制,给出了主程序及部分关键部分的程序流程图。该电源具有输出电压连续可调、精度高、电路简单、操作灵活等优点。     

A new approach to frequency domain power measurement based on distortion responsibility

This paper takes us a step forward with respect to previous definitions for the measurement of electric power quantities under non-sinusoidal conditions.A new decomposition of voltage, current and power is presented in order to determine the extent to which the distribution company and the electrical energy consumer are each responsible for the harmonic distortion measured at the point of common coupling, PCC.This gives us three different quantities: fundamental frequency, frequencies associated with the distribution system distortion and frequencies associated with consumer distortion. These magnitudes can also be measured in relation to power factor compensation and harmonic elimination problems in power distribution systems.In addition to this, the power factors resulting from the new decomposition are also analyzed and the decomposition algorithm implemented on a measurement platform based on a digital signal processor, DSP.Finally, the general structure of the system, focusing on both hardware and software, is also discussed.     

数据融合技术在电力设备在线监测系统数字滤波中的应用

准确测量电力设备的各种运行参数,是电力设备在线监测系统进行故障诊断的重要前提,而各种干扰的存在严重地影响了测量精度.为消除测量中的干扰,文中提出了一种基于数据融合技术的数字滤波思想,推导了算术均值与递推估计相结合的数字滤波算法,该算法保留了测量数据的局部与全局特性,具有计算量少、速度快等特点.对变压器套管现场数据的处理结果验证了该算法的正确性.     

Digital control and integration of a 192 MW wind farm with doubly fed induction generator into the Brazilian power system

This paper reports on design of digital control for wind turbines and its relation to the quality of power fed into the Brazilian grid on connecting to it a 192 MW wind farm equipped with doubly fed induction generators. PWM converters are deployed as vector controlled regulated current voltage sources for their rotors, for independent control of both active and reactive power of those generators. Both speed control and active power control strategies are analyzed, in the search for maximum efficiency of conversion of wind kinetic energy into electric power and enhanced quality of delivered power.     

蒙西并网风电场故障分析和数字化运营管理系统的设计

针对蒙西并网风电场故障率高、维修费用昂贵的问题,以风机制造厂家为源头的风电设备数字化运营管理体系,设计了支持风电装备数字化运营的整套平台框架。该平台可以将风电场前期资料导入,同时包括风电装备的日常运行管理、故障管理、维修管理直至风电装备的报废回收管理,从而形成设备的全寿命周期管理,有效地帮助提高风机制造业和风电投资企业管理成本,减少故障率,进而降低整个风力发电的成本。     

数字摄影测量技术在500kV送电线路工程中的应用

本文介绍了数字摄影测量技术在５００ｋＶ田湾－盐城送电线路工程中的应用,认为在送电线路工程中应广泛采用这一技术,并对应用这一技术提出了一些建议。     

变电站谐波抑制与无功补偿的大功率混合型电力滤波器

阐述了一种用于高电压变电站谐波抑制与无功补偿的大功率混合型电力滤波器。该系统包括无源滤波器和有源滤波器两部分，其中有源电力滤波器能同时补偿大容量变电站的功率因素和电流谐波。文章提出了大功率混合型电力滤波器的一种配置，讨论了其工作原理，给出了无源滤波器的设计和有源滤波器的谐波电流注入分析。阐述了有源滤波器中基于DSP的数字控制器。最后，仿真结果和实际工程应用都证明这个系统有着良好的无功补偿和谐波滤波性能。     

Real-time digital simulation of power electronics systems with Neutral Point Piloted multilevel inverter using FPGA

Most of actual real time simulation platforms have practically about ten microseconds as minimum calculation time step, mainly due to computation limits such as processing speed, architecture adequacy and modeling complexities. Therefore, simulation of fast switching converters’ instantaneous models requires smaller computing time step. The approach presented in this paper proposes an answer to such limited modeling accuracies and computational bandwidth of the currently available digital simulators.As an example, the authors present a low cost, flexible and high performance FPGA-based real-time digital simulator for a complete complex power system with Neutral Point Piloted (NPP) three-level inverter. The proposed real-time simulator can model accurately and efficiently the complete power system, reducing costs, physical space and avoiding any damage to the actual equipment in the case of any dysfunction of the digital controller prototype. The converter model is computed at a small fixed time step as low as 100 ns. Such a computation time step allows high precision account of the gating signals and thus avoids averaging methods and event compensations. Moreover, a novel high performance model of the NPP three-level inverter has also been proposed for FPGA implementation. The proposed FPGA-based simulator models the environment of the NPP converter: the dc link, the RLE load and the digital controller and gating signals. FPGA-based real time simulation results are presented and compared with offline results obtained using PLECS software. They validate the efficiency and accuracy of the modeling for the proposed high performance FPGA-based real-time simulation approach. This paper also introduces new potential FPGA-based applications such as low cost real time simulator for power systems by developing a library of flexible and portable models for power converters, electrical machines and drives.