A Low GPS Time Sensor for Use in Power System Control (SBIR Phase I)

提出了一种低成本的GPS时间传感器， 开发了适用于电力系统故障的 检测与控制 GPS提供了一个高度精确的 允许数据同步的时间基准， 在变电站之间的100纳秒内， 控制中心。 精确时间在功率控制中的应用包括 数据记录、继电器测试、故障隔离和相位 角度测量 可以在网格中隔离故障 精确到100米 故障到达两个站的时间。 相位角 测量可以被确定到40的精度 微拉德 作为这项工作的一部分，将进行模拟 对网络状态进行估计 性能改进可能使用这些精确 时间测量 目前，最便宜的GPS定时接收器的成本 超过一万美元 这样的设备会非常昂贵 安装在成千上万的变电站， 电力网。 根据这一建议， 努力开发低成本的精确时间 电力用同步GPS传感器 系统监控 所提出的传感器将提供 高度可靠，时间基准精确到100 而成本不到一千美元。

A low cost GPS Time sensor is proposed to be developed which will be suitable for power system fault detection and control. GPS provides a highly precise time reference which allows data to be synchronized to within 100 nanoseconds between substations and control centers. Applications of precise time in power control include data logging, relay testing, fault isolation and phase angle measurements. Failures can be isolated in a grid to a precision of 100 meters by measuring the relative time of arrival of a fault at two stations. Phase angle measurements can be determined to a precision of 40 micro-rad. As part of this effort, a simulation will be performed on the network state estimation performance improvement possible using these precise time measurements. Currently, the least expensive GPS timing receivers cost over $10,000. Such equipment would be very expensive to install at tens of thousands of substations throughout the electric power grids. It is proposed under this effort to develop a low cost precise time synchronization GPS sensor for use in electric power system monitoring. The proposed sensor will provide a highly reliable, time reference accurate to 100 nanoseconds for a cost of less than $1,000.