110kV桥口变电站智能化改造关键技术研究

发布时间：2018-01-07 08:34

本文关键词：110kV桥口变电站智能化改造关键技术研究　出处：《南华大学》2014年硕士论文　论文类型：学位论文

【摘要】：变电站是电网结构基础端点,实现变电站智能化是建设坚强智能电网的根本基础和重要前提,变电站的智能化实现需要结合其地理位置、建设规模等自身因素。本文以郴州桂阳县110kV桥口变电站作为研究对象,研究了变电站智能化改造关键技术,结合110kV桥口变电站的地理位置、电网结构、负荷供应、装置配置、系统组成等基本状况,提出符合其自身特点的“横向、纵向”智能化改造思路,有针对性的对110kV桥口变电站智能化改造关键技术进行研究和应用。论文的主要工作如下所示:(1)根据110kV桥口变电站的运行方式、供电范围、负荷发展状况等对桥口变电站进行负荷预测,论证其在未来7年内的桂阳县电网运行状态,分析桥口变电站过载对桂阳县北部电网造成的安全隐患,提出对110kV桥口变电站进行智能化改造的必要性。(2)遵循“一次设备智能化,二次设备网络化”的智能化改造原则,采用“一次设备本体+传感器+智能组件”方案,提出对桥口变电站进行“横向、纵向”区域划分的改造思想。(3)采用“一次设备本体+传感器+智能组件”方案,以电压等级为划分条件,通过变电站高、中、低压三侧设备信息数字化采集和运行状态实时监测,实现一次设备智能化改造。对于桥口变电站110kV出线及主变压器三侧进线间隔采用电子式互感器技术实现信息的就地数字化采集。对于35kV和10kV出线,保留间隔常规互感器,采用常规互感器数字化采集技术通过合并单元与常规互感器的合理配置,实现采集信息的数字化传输。(4)遵循“三层两网”式的智能变电站系统结构,从“纵向”分别对110kV、35kV、10kV侧网络进行过程层独立组网,基于IEC61850通讯标准,对110kV桥口变电站二次设备网络化。结合变电站不同电压等级的自动化系统配置和设备状况,通过组网方式比较,对110kV侧采用SV点对点和GOOSE组网,对35kV/10kV侧采用点对点的网络配置方案,组建桥口变电站过程层及过程层网络,实现智能变电站“三层两网”式自动化系统结构,构建一体化信息交互平台。(5)提出对桥口变电站电源端设备和主变压器进行在线监测监测,通过采用在线监测技术对110kV出线及主变压三侧进线间隔SF6断路器微水含量、主变压器油分解气体成分及浓度和避雷器全漏电流大小进行在线监测,实现对主要设备的状态检修模式,及早发现不良运行状态,在故障发生前消除故障隐患,提高桥口变电站安全运行水平。
[Abstract]:Is the basic structure of Power Grid Substation endpoint, realize intelligent substation is the foundation and premise of the construction of strong smart grid, intelligent substation according to its geographical location, construction scale factors. This paper takes Guiyang County 110kV Chenzhou Qiaokou substation as a research object, the research of the substation intelligent transformation of key technology, combined with 110kV Qiaokou substation location, grid structure, load supply, device configuration, the basic situation of composition system, put forward the horizontal accords with its own characteristic "vertical" intelligent transformation way, according to the research and application of 110kV Hashiguchi substation intelligent transformation of key technology. The main work of the thesis is as follows: (1) according to the operation mode, 110kV Hashiguchi substation power supply range, load situation of load forecasting in Qiaokou substation, demonstrated in the future 7 Guiyang county power grid operation state during the year, analysis of security risks in Qiaokou substation overload of Guiyang power grid caused by the northern part of the county, it is necessary for the intelligent transformation of 110kV Hashiguchi substation. (2) follow the "intelligent primary equipment, the principle of the intelligent transformation of the two network", with "a device body + + sensor intelligent component program, put forward to the substation" horizontally, Qiaokou transformation thought longitudinal "regional division. (3) using a device body + + intelligent sensor assembly program, with the voltage level is divided by the substation condition, high, low voltage side of three real-time monitoring equipment information digitization and the running state, to achieve the transformation of intelligent primary equipment for digital substation in Qiaokou 110kV outlet and main transformer three side wire spacing using electronic transformer technology to realize the information acquisition for. 35kV and 10kV outlet, retention interval transformer, through the rational allocation of the merging unit and the conventional transformer with digital acquisition technology of conventional transformer, digital transmission and acquisition of information. (4) intelligent substation system structure based on the "three layer two network", from "vertical" of 110kV, 35kV, 10kV the network layer independent network, based on IEC61850 standards of 110kV substation two Qiaokou equipment network. Combining with automation system configuration and equipment status in different substations, through the network, using the SV point and GOOSE network to the 110kV side, the network configuration of the point on the 35kV/10kV side the formation process of substation, Qiaokou layer and process layer network, intelligent substation "three layer two" type structure of the automation system, construction of integrated information exchange platform. (5) proposed to Hashiguchi variable Online monitoring of power plant equipment and main transformer, through the use of online monitoring technology of 110kV line and main transformer three side wire spacing SF6 circuit breaker micro water content, gas composition and decomposition of transformer oil concentration and arrester full leakage current on-line monitoring, realize the maintenance mode of the main equipment, as soon as possible that bad running, to eliminate hidden faults before failure, improve the safe operation level. Hashiguchi substation

【学位授予单位】：南华大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM63

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