电力感应调控滤波理论与方法研究

Based on the research of Youths Science Fund, this project further proposes and investigates a controllably inductive filtering theory and methodology that has a track-driven inductive filtering principle. At the stage of fundamental research, the wiring scheme and the operating principle of the controllably inductive filtering device will be studied. The equivalent circuit and mathematical model of this filtering device are established to reveal the working mechanism. Based on the theory of electromagnetism finite element analysis and the basic principle of circuit analysis, a field-circuit coupling model of the filtering device is constructed to analyse and calculate the electromagnetic properties, energy-saving characteristic as well as vibration and noise reduction characteristic of the filtering device. Moreover, an integrated optimization method with the objective of maximizing the efficiency of the DC system is proposed for the new filtering device, and a design procedure is also proposed for the combined control system associated with the filtering device. At the stage of application research, an industrial DC power supply system and a DC transmission system are proposed based on the controllably inductive filtering theory. The steady- and transient-state characteristics and related technical performance are synthetically evaluated for the application of these two DC systems in complex power system. The research achievement can be used to simultaneously solve the power quality problems of both public networks and the interfaced power supply systems, which has importance scientific significance to promote the development of current power filtering as well as DC transmission and supply technologies.

在青年科学基金项目基础上，本项目进一步提出并研究一种具有主动跟踪式感应滤波原理的电力感应调控滤波理论与方法。在基础理论研究环节，重点研究感应调控滤波装置的接线方式与运行原理，建立该装置的等值电路和数学模型，以理论解析的方式揭示感应调控滤波的工作机制；基于电磁有限元分析理论和基本的电路原理，构建该装置的场路耦合模型，对感应调控滤波的电磁特性、节能降耗特性和减振降噪特性进行多物理场分析与计算；提出一种以直流系统效率最大化为目标的新型滤波装置集成优化设计方法以及一种与该装置配套的复合控制系统设计方法。在应用基础研究环节，提出一类由感应调控滤波原理构建的工业直流供电系统和直流输电系统，并就这两类系统应用于复杂电力系统的暂稳态运行特性和技术性能进行综合评估。研究成果有助于同时解决当前公共电网和所连接供电系统双方各自存在的电能质量问题，对于积极推动电力滤波技术和直流输供电技术的发展具有重要的科学意义。

本项目针对目前直流供电谐波抑制方法存在的局限性及相关的电能质量问题开展了深入的研究工作，项目按计划完成了预定的任务，取得了如下主要成果：在电力感应调控滤波机理与运行特性研究方面，建立了系统的三相等效电路模型和数学模型，从谐波电流在变压器内部传递关系的角度揭示了电力感应调控滤波系统独特的工作机制；在电力感应调控滤波装置集成优化设计方面，提出了一种新型的变压器绕组排布方式，将滤波电抗器集成于变压器之中，并进一步地形成了一整套完善的电力感应调控滤波系统阻抗协调设计方法，为该方法的工程设计提供了技术指导；在电力感应调控滤波系统多目标控制策略研究方面，分别提出了虚拟阻抗综合控制策略、复阻抗优化控制算法和谐波电流矢量控制方法，以满足感应滤波技术的零阻抗设计要求，实现对于来自负载/电网谐波的双向抑制。项目建立了较为完备的电力感应调控滤波理论与方法体系，在基础理论与应用研究方面取得重要突破。项目组在IEEE Transactions等国际期刊和本领域重要的国际会议上发表学术论文48篇，其中SCI收录25篇、EI收录23篇，申请或授权发明专利14项。并积极参与IEEE ITEC、IEEE APPEEC等国际高水平学术会议，与国内外同行进行了深入的学术交流。