外桥与内桥接线的对比
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">当<span style="color: black;">仅有</span>两台变压器和两条线路时，<span style="color: black;">能够</span>采用桥式接线，桥式接线<span style="color: black;">根据</span>连接桥的位置可分为内桥接线和外桥接线，桥式接线<span style="color: black;">拥有</span>工作<span style="color: black;">靠谱</span>、灵活、<span style="color: black;">运用</span>电器少、<span style="color: black;">安装</span>简单清晰、建造<span style="color: black;">花费</span>低、易于发展成单母线分段接线等优点。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">连接桥上<span style="color: black;">也</span>装设断路器，正常运行时此断路器接通。这种接线中，四条回路中只用了三台断路器，所用断路器数量较少。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">城区最<span style="color: black;">平常</span>的110kV桥形接线变电站多为内桥，这种变电站<span style="color: black;">通常</span><span style="color: black;">做为</span>110kV电压等级的终端变电站<span style="color: black;">运用</span>，以10kV电压等级向城区用户输出电能。两条110kV线路互为备用，无110kV穿越功率，不配置110kV线路<span style="color: black;">守护</span>，<span style="color: black;">根据</span>进线备自投方式配置高压侧备自投。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">外桥变电站多<span style="color: black;">做为</span>110kV电压等级环网中的联络变电站<span style="color: black;">运用</span>，在外桥断路器处配置双向线路<span style="color: black;">守护</span>，站内不配置高压侧备自投。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">穿越功率</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">穿越功率<span style="color: black;">指的是</span>某一功率由一条线路流入并穿越横跨桥又经过另一线路流出的功率，穿越功率在双回路电源进线110kV、35kV变电所内桥、外桥接线中可能<span style="color: black;">出现</span>的。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">内桥与外桥<span style="color: black;">平常</span>运行方式</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1. 内桥接法运行方式</p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-axegupay5k/814538422ddd4f44a3cde750e26b263c~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723342717&x-signature=5wlLs5gk%2FA04M9FgGc3HedFaBgo%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">（a）无穿越功率。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">掌控</span>QF3<span style="color: black;">就可</span><span style="color: black;">掌控</span>#2主变投退，对#1主变<span style="color: black;">无</span>影响；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">#2主变<span style="color: black;">守护</span>跳闸不会影响#1主变运行；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">#1主变跳闸会<span style="color: black;">导致</span>#2主变失压。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">（b）有穿越功率。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">掌控</span>QF2<span style="color: black;">就可</span><span style="color: black;">掌控</span><span style="color: black;">是不是</span><span style="color: black;">经过</span>线路2对外<span style="color: black;">传送</span>电能，不影响2#主变运行，适用于110kV线路<span style="color: black;">必须</span>经常操作的<span style="color: black;">状况</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">线路2故障跳开QF2不会影响#2主变运行；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">停用#1主变或#2主变（QF3跳开，联络线中断）都会<span style="color: black;">导致</span><span style="color: black;">没法</span><span style="color: black;">经过</span>线路2<span style="color: black;">传送</span>电能；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">#1主变或#2主变<span style="color: black;">守护</span>跳闸都会<span style="color: black;">导致</span>联络线中断。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">外桥接法运行方式</strong></p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/a6682071b2f643ba8b18fc0294e1f405~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723342717&x-signature=keC5XqGxxBFMnO%2FCX7eNl%2BngOvY%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">（c）无穿越功率。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">本质上是两套变压器组接线，两台主变压器相互之间<span style="color: black;">无</span>任何影响。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">（d）有穿越功率。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">此时停运任何一台主变压器都不会影响<span style="color: black;">另一</span>一台主变压器的运行及联络线的导通，适用于变压器<span style="color: black;">必须</span>经常操作的<span style="color: black;">状况</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">任何一台主变压器的主变<span style="color: black;">守护</span>跳闸<span style="color: black;">亦</span>都不会影响到<span style="color: black;">另一</span>一台主变压器和联络线。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">外桥的<span style="color: black;">守护</span>配置</strong></p>
<div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/a339ab521e3045359a33be1c43f6a3ea~noop.image?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1723342717&x-signature=N%2FOrmxCOTjpMPCcxa5eVKPvIKkw%3D" style="width: 50%; margin-bottom: 20px;"></div>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">外桥接线中，外桥断路器<span style="color: black;">实质</span>上是<span style="color: black;">做为</span>线路断路器运行，<span style="color: black;">因此</span><span style="color: black;">必要</span>配置相应线路<span style="color: black;">守护</span>。而图（d）中线路2有两个方向<span style="color: black;">传送</span>电能的可能，<span style="color: black;">通常</span>线路<span style="color: black;">守护</span>中距离<span style="color: black;">守护</span><span style="color: black;">拥有</span>方向性（即只能<span style="color: black;">守护</span>断路器<span style="color: black;">一边</span>的线路），<span style="color: black;">因此</span><span style="color: black;">必须</span>配置两台110kV线路<span style="color: black;">守护</span><span style="color: black;">安装</span>（<span style="color: black;">一样</span>：外桥处电流互感器需配置两组用于线路<span style="color: black;">守护</span>的<span style="color: black;">守护</span>级二次绕组）。</p>
期待更新、坐等、迫不及待等。 对于这个问题，我有不同的看法... 认真阅读了楼主的帖子，非常有益。 哈哈、笑死我了、太搞笑了吧等。
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