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智能变电站二次系统虚拟仿真方法研究及实现

发布时间:2018-11-23 19:55
【摘要】:伴随智能电网的发展,智能变电站也在广泛地建设和应用。相比于传统变电站,智能站中新型的二次装置大量涌现,信息格式数字化,通信方式网络化。对于专业工程人员来说,保护的内部原理变得不可见;过程层的智能设备合并单元、智能终端和间隔层的保护装置、测控装置之间的信息传递也变得透明;电气量信号不再以传统的电缆接线进行传输,而是基于标准的数据模型和通信报文,通过"虚端子"进行连接。如何使专业工程人员对二次系统的装置和回路有深入、透彻的学习值得关注;同时,国内外对于智能变电站二次系统的整体仿真和测试的研究比较少,更多是基于传统站的单装置的功能测试,针对智能站二次系统的闭环逻辑测试不够完善,无法满足工程人员对专业技能的要求。基于国内智能变电站发展的趋势和前景,针对工程人员,本文提出一种智能变电站二次系统虚拟仿真方法。该方法以软件的形式仿真了智能变电站中保护装置的内部原理和功能,以及外特性;将保护动作时基本动作特性和动作逻辑以可视化的方式展现出来;同时基于IEC61850标准建立保护的基本数据模型,定义其功能语义,配置虚拟保护的数据集。利用RTDS(Real Time Digital Simulator)实时数字仿真平台搭建一次系统模型并进行控制,利用模型中的GTNET_SV和GTNET_GSE模块,实现智能变电站中合并单元和智能终端的搭建。基于SV采样值技术和GOOSE通信技术,分析并建立系统的通信方式,将RTDS信号源系统与虚拟保护装置连接,通过正确的通信配置进行闭环测试,既可以测试虚拟保护装置的基本功能和响应特性,了解保护内部信号流动和逻辑流程,还能通过系统中二次回路展示分析模块以可视化方法多维度地展示二次回路的连接。该系统的开发和应用对实际的工程人员具有一定的培训意义,使参训人员深入了解二次系统中智能装置内部工作原理,学习故障情况下保护内部元件的动作特性和逻辑元件的配合,掌握基本的保护动作报告分析能力。通过闭环测试,掌握故障情况下二次系统逻辑回路的功能信号流。同时针对实际工程培训中,智能站中的硬件设备难以大量配置,利用软件仿真可大量减少实际保护装置的配备,节约投资。
[Abstract]:With the development of smart grid, intelligent substation is widely used. Compared with traditional substations, new secondary devices in intelligent stations emerge in large numbers, information formats are digitized and communication modes are networked. For professional engineers, the internal principle of protection becomes invisible, the process layer intelligent equipment merging unit, intelligent terminal and interval layer protection device, the information transmission between measurement and control devices becomes transparent. Electrical signal is no longer transmitted by traditional cable connection, but is connected by "virtual terminal" based on standard data model and communication message. How to make the professional engineers to the secondary system of the device and loop have a deep, thorough study is worth paying attention to; At the same time, domestic and foreign research on the intelligent substation secondary system simulation and testing is less, more based on the traditional station of the single device function test, the intelligence station secondary system closed-loop logic test is not perfect. Unable to meet the requirements of engineers for professional skills. Based on the development trend and prospect of intelligent substation in China, a virtual simulation method for secondary system of intelligent substation is presented in this paper. The method simulates the internal principle, function and external characteristics of the protection device in the intelligent substation in the form of software, and presents the basic action characteristics and logic of the protection in a visual way. At the same time, the basic data model of protection is established based on IEC61850 standard, its functional semantics is defined, and the data set of virtual protection is configured. Using RTDS (Real Time Digital Simulator) real-time digital simulation platform to build a system model and control, using the model of GTNET_SV and GTNET_GSE modules, to achieve the intelligent substation merging unit and intelligent terminal construction. Based on the SV sampling value technology and GOOSE communication technology, the communication mode of the system is analyzed and established. The RTDS signal source system is connected with the virtual protection device, and the closed loop test is carried out through the correct communication configuration. It can not only test the basic function and response characteristics of the virtual protection device, understand the internal signal flow and logic flow, but also visualize the connection of the secondary loop through the secondary loop display and analysis module in the system. The development and application of the system has a certain training significance for the practical engineers, so that the participants can deeply understand the internal working principle of the intelligent device in the secondary system. Learn the action characteristics of the internal protection components and the cooperation of the logic components in the case of failure, and master the basic protection action report and analysis ability. Through the closed loop test, the function signal flow of the secondary system logic loop can be grasped under the condition of fault. At the same time, the hardware equipment in the intelligent station is difficult to be configured in the actual engineering training. The use of software simulation can greatly reduce the equipment of the actual protection device and save the investment.
【学位授予单位】:山东大学
【学位级别】:硕士
【学位授予年份】:2017
【分类号】:TM63;TM76

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