一种嵌入式动态低压无功补偿控制系统的设计

在研究分析传统低压无功补偿系统的优缺点及实际运行效果后，提出一种以P89C54为主体的新型动态无功补偿控制系统的设计方案。以无功缺额作为主判据，电压作为辅助判据，有效地克服了在负荷变化的整个范围内投切振荡的产生，实现了自动循环投切及过压自动分组切除电容器组等功能；由于采用了SPI等接口芯片，使系统结构更简单，提高了整体可靠性。初步测试表明，此方案设计合理，系统的适应性较强，具有一定的推广价值。

Design of embedded control system for dynamic low-voltage reactive compensation

After analyzing the advantages, shortcomings and running impacts of the former low-voltage reactive compensation systems. A new design is brought forward based on P89C54 of higher accuracy reactive compensation control system, and the principle of measure and control, hardware and software in the design are introduced. The scheme of control system takes lacking reactive as main criterion and realizes higher precision compensation for reactive in the electric power networks. In the design, the main interface circuits, sample converter, display driver and data memory adopt the integration circuits with SPI. This scheme simplifiesthe configuration and improves the reliability of system. The test indicates the design is reasonable, adoptive and valuable in spread.