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世界电压等级最高容量最大统一潮流控制器示范工程投运

2017-12-20 12:41:55   央广网

工作人员在监控统一潮流控制器的工作状态。万程鹏 摄

本报南京12月19日电 (记者王伟健)江苏苏州南部电网500千伏统一潮流控制器(英文简称“UPFC”)科技示范工程19日正式投运,最大可提升苏州电网电能消纳能力约130万千瓦。据介绍,这是世界上电压等级最高、容量最大的统一潮流控制器,被称为电流控制的“智能导航仪”,在世界范围内首次实现500千伏电网电能流向的灵活、精准控制。

苏州南部地区用电负荷接近苏州的70%,其主要电源是锦屏—苏南特高压直流送来的四川水电,及三条500千伏交流输电线路受进的三峡水电、安徽淮南煤电以及省内电源送电。据介绍,四川水电季节性强,冬季枯水期送电大幅减少,造成苏州南部电网三条500千伏电力通道无法保持均衡利用,容易发生“一半过载堵塞、一半空置浪费”的现象。

为进一步保障对苏州南部的稳定供电,国网江苏省电力有限公司投资建设苏州南部电网500千伏UPFC示范工程。国网江苏电科院总工程师李群介绍,该工程的投运,相当于给苏州南部电网加装了一个“智能导航系统”,实现了电能的“无人驾驶”。安装UPFC后,它可以像电网的智能导航系统一样,将电网电能由自由分布状态转变为精确受控状态,智能匹配三条交流通道输电功率,实现了电能的最优分布,提升苏南地区供电能力130万千瓦。该技术具有安全、稳定和投资少的优点,在负荷密度大、供电可靠性要求高的地区具有广泛的应用前景。

“我国是世界上首个掌握500千伏UPFC成套设备技术的国家。苏南500千伏UPFC工程的投运,标志着国家电网公司占领了国际柔性交流输电技术制高点。”国网江苏省电力有限公司总工程师陈刚介绍,该工程攻克了大量技术难点,研制了世界上电压等级最高、容量最大的独立式串联变压器,世界上电压等级最高的自冷式交流式晶闸管阀组。

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