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通过认证 
1C31238H01
1C31238H01
根据运行记录，机组平均负荷约在240MW，如上表所示对应的凝结水流量为615.2t/h，此时的凝泵出口压力为3.12Mpa；而在300MW负荷下，凝结水流量为797.7t/h，此时的凝泵出口压力为2.93MPa。因此凝结泵存在较大的节能空间。
为了实现节能降耗，提高机组调节性能，我厂经过多方考察认证，*终采用北京合康亿盛科技有限公司生产的HIVERT-Y06/130型高压变频器。该套高压变频器包括变压器柜、单元柜、控制柜。可以满足DCS系统控制要求，实现一套变频带两台凝结水泵的要求。
二、凝泵变频改造方案
1、凝泵变频器应实现的功能
1）实现每台机组正常运行方式下单台凝泵变频运行，另一台凝泵工频备用。
2）变频运行方式下，流量自动随转速调节。
3）电机拖动水泵实现软启动和软制动。
4）实现线性调速，系统调频范围0-50HZ。
5）实现同机组DCS系统的双向信息传递：
变频器提供给DCS系统输出转速、输出电流、变频器温度等4-20毫安模拟量信息；以及变频器报警及故障、启停状态、高压开关状态等开关量信号。
同时接收DCS系统提供的转速给定模拟量信号以及远方启停指令。
6）变频器应配置对自身及电机的保护功能。
7）当变频器发生故障时应保证凝泵工频正常运行。
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