电网数据采集系统日趋提高的工作频率需求与电源配送质量已成矛盾，高频信号

电网数据采集系统日趋提高的工作频率需求与电源配送质量已成矛盾，高频信号产生同步开关噪声，导致采集数据失真，系统稳定性降低。针对电网高速数采系统的特殊性，通过对单级驱动端输出缓冲器建模及仿真，验证了同步切换噪声对采集系统带来严重影响。为降低该噪声，提出了板级狭缝-地表扰动晶格型电磁带隙结构以对电源/地平面层作特殊处理，构造了该结构的一维传输线模型，推导了高低频截止频率，频域仿真数据验证了该模型的正确性。与普通狭缝型电磁带隙结构对比，本文所提结构频带更宽，应用范围更广。将该结构应用于实际电路，实测该结构与完整电源/地平面下的数字信号与模拟信号数据，前者使得同步开关噪声降低为前者的65%，且信号抖动质量提高75%。实测数据证明了本文提出的板级电磁带隙结构可提高模拟信号与数字信号之间隔离度，降低同步开关噪声，提高电源配送质量，大幅改善信号抖动问题，为电力监控系统数据采集与传输提供了新的思路。

結果 (英文) 1:

Has become a contradiction of the operating frequency of the grid data acquisition system is rising demand and power distribution quality, high-frequency signal is generated simultaneous switching noise, leading to the distortion of data collection, reducing the stability of the system. Verify, through modeling and simulation of single-stage driver-side output buffer for the grid high speed data acquisition system unique, simultaneous switching noise is a serious impact on the acquisition system. Board level in order to reduce the noise, slit - surface disturbance lattice EBG structure to special treatment, to construct a one-dimensional transmission line model of the structure of power / ground plane layer for the derivation of high and low frequency cut-off frequency,Frequency domain simulation data to verify the correctness of the model. Ordinary slit EBG structure comparison, the proposed structure of a wider band, a wider range of applications. This structure is applied to the actual circuit, digital signal and analog signal data measured the structure and integrity of the power / ground planes, the former makes simultaneous switching noise is reduced to 65% of the former and 75% increase in the quality of the signal jitter. The measured data this paper, board level EBG structure can improve the isolation between the analog and digital signals, reduce simultaneous switching noise and improve the quality of power distribution, and significantly improve the jitter problemFor data collection and transmission of electric power monitoring system provides a new way of thinking.

結果 (英文) 2:

Network data acquisition system to improve the operating frequency and power supply quality demand is contradictory, high frequency signal generating simultaneous switching noise, leading to acquisition data distortion, system stability.High speed data acquisition system for power network's particularity, the single stage driver output buffer modeling and simulation, validation of synchronous switching noise on the collection system to bring serious effect.In order to reduce the noise, put forward board slit - surface disturbance lattice type electromagnetic band gap structure for power / ground plane layer for special treatment, constructed the structure of one-dimensional transmission line model, deduced the high and low frequency cutoff frequency,Frequency domain simulation data to verify the correctness of the model.With ordinary slit type electromagnetic band gap structure comparison, the proposed structure band wider, wider application range.The structure is applied to a practical circuit, measured the structure and integrity of power / ground plane under the digital signal and analog signal data, it makes the simultaneous switching noise reduction for 65% of the former, and improve the quality of the dither signal 75%.The measured data shows that the proposed board level electromagnetic band gap structure can improve the analog signal and digital signal between isolation, reducing simultaneous switching noise, improve power supply quality, improve the signal jitter,As the electric power monitoring system data acquisition and transmission provides a new train of thought.

結果 (英文) 3:

Network data acquisition systems increasingly demand for increased operating frequency and quality of power supply and distribution has become contradictory, synchronous switching noise generated by high-frequency signals, resulting in distortion of data, system stability. Specific characteristics for high-speed data acquisition system for power through modeling and simulation of single-stage drive-end output buffer, verify the synchronous switching noise on collection systems have serious implications. In order to reduce the noise, made a slit-Board-level lattice-type electromagnetic band-gap structure to surface disturbance on power/ground plane layer for special treatment, we construct a one-dimensional transmission line model of the structure, derivation of the high and low frequency cut-off frequency,Frequency-domain simulation data to verify the correctness of the model. Compared with ordinary slit-type electromagnetic band-gap structure, the structure of this article a wider frequency band, a wide range of applications. The structure to the actual circuit, measured under the structure and full power/ground plane of digital signals with an analog signal data, which makes synchronous switching noise reduction 65% for the former, and improved quality of signal jitter 75%. Measured data to prove this article make Board level electromagnetic band-gap structure to improve between the analog signal and digital signal isolation, reduced synchronous switching noise, improve the quality of power supply and distribution, significantly improve signal jitter problemData acquisition and transmission of electric power monitoring system provides a new way of thinking.