交流电量测量.pdf

摘 要 近年来，由于大量电力电子变流装置和非线性设备的广泛应用，使得电 网中的电压、电流波形发生畸变，造成电能质量的严重恶化；同时，微电子 技术的发展使得各种自动化装置广泛应用，极大地提高了社会生产力，而这 些装置对于电能质量下降极为敏感，因此在生产过程中出现许多严重的事 故，造成了巨大的损失。一方面是电网电能质量的下降，另一方面却是用户 对电能质量要求的提高，它们之间的矛盾日益尖锐。因此为了提高电能质量， 首先必须能准确、完整的对电力参数进行检测和分析。 本论文主要内容包括交流电量综合检测仪器的主要功能、测量方法、硬 件电路、软件流程等。该仪器可对单相、三相三线、三相四线交流电路中用 电设备的电参数进行实时、在线检测和记录，适用于含有谐波污染情况下的 机电设备现场、发电厂、供电局、企业变电所现场等。可用来测量电流、电 压、有功功率、无功功率、视在功率、有功电能、无功电能、视在电能、频 率、功率因数等电力参数，以及正逆相序判别指示功能和超限报警功能。 该仪器以16 位单片机SPCE061A 作为核心控制器件，采用同步采样法 测量法及实时数据处理方法，具有功能齐全、可靠性高、性能价格比高等优 点。 关键词：电力参数 综合检测仪器 同步采样 I Abstract In recent years, with the wide application of various kinds of electric and electronic convertors and other non-linear load, this can make the voltage and current waveform distort and result in the serious depravation of power quality . At the meantime, the microelectronic technology development causes each kind of automated equipment widespread application, enormously enhanced the social productive forces. These installments are extremely sensitive to the electrical energy drop in quality, so many serious accidents happen in the production process and has created massive loss.On the one hand,the quality of electric power has declined, on the other hand the user is required to improve the quality of electricity, and the contradictions are becoming increasingly acute. To enhance the quality ofelectrical energy, first of all the testing and analysis of e Iectrical parameters must be accurate and complete . A new type and MLllti-functional measuring instrument based on field bus are designed in this paper that included measuring method, hardware circuit, software program . Th