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专 业 作者姓名 指导教师 定稿日期：2013年04月06日

摘 要

风力作为一种可再生资源是取之不尽、用之不竭的。风力发电环境污染小，可取代煤炭石油等非可再生资源的使用。因此，随着风力发电技术的日趋成熟，风力用作发电的动力来源有着更为广阔的发展前景。风力发电机组电控系统主要由变桨系统、变流系统、主控系统以及监控系统组成。其中，变桨系统的主要作用是通过控制输出功率对风机速度进行调整，达到降速目的。当风速超过额定风速时，通过调整叶片的桨距角降低风机转速，使风机额定功率输出，从而防止发电机和逆变系统过载，保证风机正常稳定的运行。当风速小于额定风速时，通过变桨系统改变桨距角，吸收更多的风能提高Cp（风能吸收系数），保证最高效的发电，提高风机的发电量。变桨系统的控制是风机运行、保证发电量的主要因素之一。

关键词：风机；Vensys变桨；调试；故障处理

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Abstract

Wind power as a kind of renewable resources is mine, an inexhaustible. Wind power environment pollution small, can replace coal oil and other non-renewable resources use. Therefore, with wind power technology becomes mature, wind power generation of power as a broad prospect. Wind power generators electronic control system is mainly by the Vensys system, variable current system, master control system and monitoring system composition. Among them, the main function of the system change propeller is through the control the output power of the fan speed adjustment, to slow down purpose. When the winds over the rated wind speed, through the adjustment of the leaf blade Angle reduce fan speed, is rated power output to fan, so as to prevent generator and inverter system overload, ensure the normal operation of the stable fan. When the wind speed, the rated wind speed less than change the system change from the Angle of propeller blade, absorb more wind power improve Cp (wind energy absorption coefficient), ensuring the best efficient power generation, improve the capacity of the fan. Vensys system control is the change of the fan operation, ensure that one of the main factors of its.

Key Word: Introduction to Wind Power; Vensys Pitch; Debugging；Troubleshooting

II

目 录

摘 要 ................................................................................................... I Abstract ................................................................................................. II 第 1 章 绪论 ....................................................................................... 1 1.1 风能概述 ..................................................................................... 1 1.1.1风能的特点及其发展 ............................................................... 1 1.1.2我国风力发电的现状及趋势 ................................................... 1 1.2 风力发电机组结构及参数 ......................................................... 2

1.2.1 基本结构.................................................................................................. 2 1.2.2 兆瓦机组电控系统组成.......................................................................... 3 1.2.3 主要技术参数.......................................................................................... 4

第 2 章 Vensys变桨系统 ................................................................... 6 2.1 变桨系统的作用 ......................................................................... 6 2.2 Vensys变桨系统组成 .................................................................. 7 第 3 章 Vensys变桨系统控制及运行调试 ....................................... 9 3.1 Vensys变桨系统控制原理 .......................................................... 9

3.1.1 变桨系统原理.......................................................................................... 9 3.1.2 Vensys变桨系统控制 .............................................................................. 9 3.1.3 Vensys变桨系统控制模式 ...................................................................... 9 3.1.4 变桨系统控制过程................................................................................ 10

3.2 变桨系统运行调试 ................................................................... 12 3.3 运行调试主要内容 ................................................................... 13

3.3.1 检查变桨系统的通讯地址.................................................................... 13 3.3.2 旋转编码器的清零操作........................................................................ 13 3.3.3 0°接近开关挡块调整操作 ..................................................................... 14 3.3.4 90°限位开关挡块调整操作 ................................................................... 14

第 4 章 变桨系统常见故障处理 ..................................................... 15 4.1 故障文件的查询 ....................................................................... 15 4.2 变桨常见故障解释 ................................................................... 15

III

4.2.1 变桨超级电容电压低故障.................................................................... 15 4.2.2 变桨逆变器OK信号丢失故障分析 .................................................... 16 4.2.3 主副旋编相差大故障............................................................................ 18

第 5 章 小结 ..................................................................................... 20 致谢 ..................................................................................................... 21 参考文献 ............................................................................................. 22

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