摘要
新能源场站常配置静止型无功补偿发生器(SVG)用于电力系统无功与谐波的补偿.SVG功率模块中的关键器件IGBT工作时会产生热量,为保证功率模块的稳定运行,常采用风冷和水冷两种冷却方式对功率模块进行散热.对比不同的SVG冷却形式,为后续新能源场站的SVG建造和选型提供参考.介绍了两个新能源场站的运行概况,分析了两个场站的SVG无功补偿方案.从阀组设备温升、设备噪声、设备运维等方面对比风冷和水冷两种冷却方式SVG的运行状况.水冷SVG在使用寿命、运行可靠性、设备维护、现场适应性等方面均优于风冷SVG,但水冷方案因增加了水系统和外冷风机,使其复杂程度较风冷方案稍高.水冷方案较好地解决了室内阀组滤网灰尘多及室内风机噪音大的问题,更适用于对现场环境噪声及污秽敏感的场合,在成本预算足够的情况下建议优先选用水冷SVG.
Abstract
New energy stations are often equipped with static reactive power compensation generators(SVG)for compensating reactive power and harmonics in the power system.The key component IGBT in the SVG power module generates heat during operation.To ensure the stable operation of the power module,two cooling methods,air cooling and water cooling,are often used to dissipate heat.Different SVG cooling forms are compared,so as to provide reference for the subsequent SVG construction and selection of new energy stations.The study introduces the general situation of two new energy stations,analyzes the SVG reactive power compensation scheme of the two stations,and compares the operating conditions of SVG cooling methods of air cooling and water cooling from valve group equipment temperature rise,equipment noise,and equipment operation and maintenance,etc.Water-cooled SVG is superior to air-cooled SVG in service life,operation reliability,equipment maintenance,field adaptability,etc.However,water-cooled scheme is slightly more complicated than air-cooled scheme due to the addition of water system and external chiller.Water cooling scheme effectively solves the problems of excessive dust in indoor valve group filters and high indoor fan noise,and is more suitable for situations sensitive to on-site environmental noise and pollution.When the cost budget is sufficient,it is recommended to prioritize the use of water-cooled SVG.
维普
万方数据