基于智能模块技术的高压直流短路开断相关理论研究

项目名称： 基于智能模块技术的高压直流短路开断相关理论研究

项目编号： No.51337001

项目类型： 重点项目

立项/批准年度： 2014

项目学科： 电工技术

项目作者： 邹积岩

作者单位： 大连理工大学

项目金额： 330万元

中文摘要： 作为智能电网的重要组成部分，高压直流输电以交流系统不可替代的优点，在远距离大容量输电、风电与光伏发电集电网等方面得到广泛应用。但到目前为止，担负着控制和保护双重任务的核心组件--高压直流断路器仍属于技术瓶颈。保护断路器的缺失，使高压直流只能点对点输电，难以大规模互联组网，解决高压直流短路开断问题对智能电网来说意义重大。本项目首先分析与选择高压直流短路开断的整体方案及开关介质，提出基于快速机构与联动关合的换流开断技术，重点研究换流开断涉及的中频真空电弧的关键基础科学问题--零区现象，并对开断过程进行机电磁联合分析。提出基于直流智能模块技术串联开断高压直流系统，研究串联后的模块同步与冗余，以及串联模块的动态介质恢复。高压直流短路开断的理论基础是极端条件下的电弧能量转移与电磁热机耦合问题，涉及等离子体物理、电磁场、磁流体力学、机构动力学等学科，通过关键基础科学问题的研究，为解决技术瓶颈扫除障碍。

中文关键词： 高压直流系统；；;短路开断;电弧零区现象；;快速斥力机构;智能模块

英文摘要： As an important part of smart grid，high voltage direct current (HVDC) transmission is widely used in long distance and large capacity power transmission, wind power and photovoltaic power grid, as the advantages of it can not be replaced. But so far, the core component of HVDC circuit breaker, that is used to control and protect the system, still belongs to the technical bottleneck. Absence of protection circuit breaker, the HVDC transmission is only point-to-point, for it is difficult to solve large-scale interconnected network, HVDC short-circuit breaking problem of great significance for the smart grid. The proposed project analyses and chooses the overall scheme of HVDC short-circuit breaking and switch medium first, proposes the current transfer breaking technique based on rapid mechanism and linkage closing, focus on the key problem of basic science -- zero phenomenon of intermediate frequency vacuum arc relates to the HVDC current transfer breaking，propose the joint analysis of mechanical- electromagnetic in the breaking process. The series breaking is also proposed to solve high voltage applications based on the DC intelligent module technology, related researches are synchronization and redundant of the module, and dynamic dielectric recovery of series modules. HVDC short-circuit breaking theory is based on arc energy transfer and electromagnetic coupling problem under extreme conditions, relates to plasma physics, electromagnetic, magnetic fluid mechanics, dynamics and other disciplines. Through the study of basic scientific problems of key technology, we can solve the bottleneck and remove the obstacles.

英文关键词： HVDC power system;Short-circuit breaking;Zero period phenomenon of arc;Fast repulsion actuator;Intelligent module