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<p class="1" style="MARGIN: 5pt 0cm;"><font face="黑体" size="6"><strong>发电机一次调频功能</strong></font><font face="黑体" size="6"><strong>在<span lang="EN-US">GE</span>新华<span lang="EN-US">XDPS</span>分散控制系统的实现</strong></font></p><p class="2" style="MARGIN: 0cm 0cm 5pt;"><span lang="EN-US"><a href="http://film.eptchina.cn/"><font size="5"><font face="仿宋_GB2312"><strong><span lang="EN-US"><span lang="EN-US">安</span></span><span lang="EN-US"><span lang="EN-US">
</span></span><span lang="EN-US"><span lang="EN-US">波</span></span></strong></font></font></a></span></p><p class="3" style="MARGIN: 0cm 0cm 7pt;"><strong><font face="楷体_GB2312">(贵州电力试验研究院)</font></strong></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">发电机组的一次调频功能是机组调速系统和协调控制系统(</span><span lang="EN-US"><font face="Times New Roman">CCS</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">)中的一项十分重要的功能。随着国民经济的发展</span><span lang="EN-US"><font face="Times New Roman">,</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">电网负荷的波动急剧加大</span><span lang="EN-US"><font face="Times New Roman">,</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">使电网频率时高时低</span><span lang="EN-US"><font face="Times New Roman">,</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">电压波形畸变</span><span lang="EN-US"><font face="Times New Roman">,</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">电压波动、闪变和三相不平衡等电能质量问题日益突出</span><span lang="EN-US"><font face="Times New Roman">,</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">直接影响到电能的质量。</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-ansi-language: ZH-CN;">电网的频率直接反映了电网上有功功率供求关系是否平衡。</span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">为提高电网安全运行水平和电网质量,并列于电网上运行的发电机组都应具备一次调频功能,即要求汽轮机的调节系统(</span><span lang="EN-US"><font face="Times New Roman">DEH</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">)或</span><span lang="EN-US"><a href="http://www.eptchina.cn/"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';"><span lang="EN-US">机组协调控制系统(</span></span><font face="Times New Roman">CCS</font><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';"><span lang="EN-US">)</span></span></a></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">在不人为设定负荷的情况下,监测到转速的变化(既电网频率的变化)后,通过调节汽轮机调门的开度,快速改变发电机组的有功功率输出,适应电网负荷的随机变动,保证电网频率的稳定、提高电能质量。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">我省目前投入一次调频功能的</span><span lang="EN-US"><font face="Times New Roman">200MW</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">及以上机组中就有</span><span lang="EN-US"><font face="Times New Roman">17</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">台机组都采用的分散控制系统是上海新华</span><span lang="EN-US"><font face="Times New Roman">XDPS</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">分散控制系统,具有一定的代表性。下面就以纳雍发电总厂一厂#</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">机组为例谈谈发电机一次调频功能在上海新华</span><span lang="EN-US"><font face="Times New Roman">XDPS</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman';">分散控制系统的实现。</span></p> |
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