📄 dlt 620-1997.html
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<TITLE>交流电气装置的过电压保护和绝缘配合(电力)</TITLE>
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<p class=MsoNormal><b style='mso-bidi-font-weight:normal'> <o:p></o:p></b></p>
<p class=MsoNormal align=center style='text-align:center'><b style='mso-bidi-font-weight:
normal'><span lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>中华人民共和国电力行业标准</span><o:p></o:p></b></p>
<p class=MsoNormal align=center style='text-align:center'><b style='mso-bidi-font-weight:
normal'> <o:p></o:p></b></p>
<p class=MsoNormal align=center style='text-align:center'><b style='mso-bidi-font-weight:
normal'><span lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>交流电气装置的过电压保护和绝缘配合</span><o:p></o:p></b></p>
<p class=MsoNormal align=center style='text-align:center'><b style='mso-bidi-font-weight:
normal'>Overvoltage</b><b style='mso-bidi-font-weight:normal'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span>protection</b><b
style='mso-bidi-font-weight:normal'><span style='font-family:宋体;mso-hansi-font-family:
"Times New Roman"'> </span>and</b><b style='mso-bidi-font-weight:normal'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span>insulation</b><b
style='mso-bidi-font-weight:normal'><span style='font-family:宋体;mso-hansi-font-family:
"Times New Roman"'> </span>coordination</b><b style='mso-bidi-font-weight:normal'><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'> </span>for<o:p></o:p></b></p>
<p class=MsoNormal align=center style='text-align:center'><b style='mso-bidi-font-weight:
normal'>AC</b><b style='mso-bidi-font-weight:normal'><span style='font-family:
宋体;mso-hansi-font-family:"Times New Roman"'> </span>electrical</b><b
style='mso-bidi-font-weight:normal'><span style='font-family:宋体;mso-hansi-font-family:
"Times New Roman"'> </span>installations<o:p></o:p></b></p>
<p class=MsoNormal align=center style='text-align:center'><b style='mso-bidi-font-weight:
normal'>DL/T</b><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'>
</span><b style='mso-bidi-font-weight:normal'>620</b><b style='mso-bidi-font-weight:
normal'><span lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>—</span>1997<o:p></o:p></b></p>
<p class=MsoNormal align=center style='text-align:center'> </p>
<p class=MsoNormal align=center style='text-align:center'><b style='mso-bidi-font-weight:
normal'><span lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>中华人民共和国电力工业部</span>1997-04-21</b><b
style='mso-bidi-font-weight:normal'><span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>批准</span></b><span
style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun:
yes">
</span></span><b style='mso-bidi-font-weight:normal'>1997-10-01</b><b
style='mso-bidi-font-weight:normal'><span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>实施</span><o:p></o:p></b></p>
<p class=MsoNormal> </p>
<P class=MsoNormal align=center style='text-align:center'><b style='mso-bidi-font-weight:
normal'><span lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'><A NAME="A1"></A>前</span></b><span style='font-family:
宋体;mso-hansi-font-family:"Times New Roman"'><span style="mso-spacerun:
yes"> </span></span><b style='mso-bidi-font-weight:
normal'><span lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>言</span><o:p></o:p></b></P>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>本标准是根据原水利电力部</span>1979<span lang=ZH-CN style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>年</span>1<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>月颁发的</span>SDJ7<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>—</span>79<span lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>《电力设备过电压保护设计技术规程》和</span>1984<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>年</span>3<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>月颁发的</span>SD<span style='font-family:宋体;mso-hansi-font-family:
"Times New Roman"'> </span>119<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>—</span>84<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>《</span>500kV<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>电网过电压保护绝缘配合与电气设备接地暂行技术标准》，经合并、修订之后提出的。</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>本标准较修订前的两个标准有如下重要技术内容的改变：</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span>1)<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>增补了电力系统电阻接地方式，修订了不接地系统接地故障电流的阈值；</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span>2)<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>对暂时过电压和操作过电压保护，补充了有效接地系统偶然失地保护和并联补偿电容器组、电动机操作过电压保护及隔离开关操作引起的特快暂态过电压保护等内容，对</span>330kV<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>系统提出新的操作过电压水平要求，修订了限制</span>500kV<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>合闸和重合闸过电压的原则和措施等；</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span><span style="mso-spacerun:
yes"> </span></span>3)<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>增加了金属氧化物避雷器参数选择的要求；</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span>4)<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>增加了变电所内金属氧化物避雷器最大保护距离和</span>SF<sub>6</sub>GIS<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>变电所的防雷保护方式的内容；</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span>5)<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>充实并完善了</span>3kV<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>～</span>500kV<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>交流电气装置绝缘配合的原则和方法，给出架空线路、变电所绝缘子串、空气间隙和电气设备绝缘水平的推荐值。</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>本标准发布后，</span>SDJ<span style='font-family:宋体;mso-hansi-font-family:
"Times New Roman"'> </span>7<span lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>—</span>79<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>即行废止；</span>SD119<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>—</span>84<span lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>除第六章</span>500kV<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>电网电气设备接地外也予以废止。</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>本标准的附录</span>A<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>、附录</span>B<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>和附录</span>C<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>是标准的附录，附录</span>D<span lang=ZH-CN style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>、附录</span>E<span
lang=ZH-CN style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>和附录</span>F<span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>是提示的附录。</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>本标准由电力工业部科学技术司提出。</span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-hansi-font-family:"Times New Roman"'><span
style="mso-spacerun: yes"> </span></span><span lang=ZH-CN
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>本标准由电力工业部绝缘配合标准化技术委员会归口。</span></p>
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