CN202206120U - 一种500kV/10kV站用变压器接线结构 - Google Patents

一种500kV/10kV站用变压器接线结构 Download PDF

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CN202206120U
CN202206120U CN 201120308312 CN201120308312U CN202206120U CN 202206120 U CN202206120 U CN 202206120U CN 201120308312 CN201120308312 CN 201120308312 CN 201120308312 U CN201120308312 U CN 201120308312U CN 202206120 U CN202206120 U CN 202206120U
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current transformer
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low
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钟山
伍晓伦
陆川
张映桢
严可为
周德才
冯千秀
曾捷
周炜明
樊燕
胡劲松
孟轩
吴克芬
马棡
徐昌云
张庆伟
胡文华
张庆宝
彭开军
许斌
谢龙
盛晶晶
许玉香
李维达
王维
浦浪
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Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Southwest Electric Power Design Institute Co Ltd of China Power Engineering Consulting Group
China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
China Power Engineering Consulting Group Corp
Electric Power Planning and Engineering Institute Co Ltd
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Northwest Electric Power Design Institute of China Power Engineering Consulting Group
Southwest Electric Power Design Institute Co Ltd of China Power Engineering Consulting Group
China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
China Power Engineering Consultant Group Central Southern China Electric Power Design Institute Corp
China Power Engineering Consulting Group Corp
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Abstract

本实用新型属于换流站领域，公开了一种500kV/10kV站用变压器接线结构，包括高压侧母线接口、隔离开关、断路器、接地开关、避雷器、高压侧套管式电流互感器、站用变压器、中性点接地侧套管式电流互感器、中性点接低压配电装置侧套管式电流互感器、低压配电装置侧接口，所述高压侧母线接口、隔离开关、断路器、接地开关、避雷器、高压侧套管式电流互感器、站用变压器、中性点接低压配电装置侧套管式电流互感器、低压配电装置侧接口采用单母线的接线方式依序连接，所述站用变压器通过中性点接地侧套管式电流互感器接地。本实用新型的接线结构节约了一组独立式电流互感器的投资，同时节省站用变压器配电装置的占地面积，具有良好的经济效益。

Description

一种500kV/10kV站用变压器接线结构
技术领域
本实用新型属于换流站领域，尤其涉及一种500kV/10kV站用变压器接线结构。
背景技术
现有技术中在站用变压器配电装置接线中，一般采用独立式电流互感器实现站用变压器的保护，然而独立式电流互感器的投资成本比较高，同时导致配电装置占地面积大，现有技术中的500kV/10kV站用变压器接线结构无法解决上述问题。   
实用新型内容
针对现有技术中存在的500kV/10kV站用变压器接线结构使用独立式电流互感器实现站用变压器的保护，导致投资成本比较高，且配电装置占地面积大的问题。因此需要一种500kV/10kV站用变压器接线结构，来解决上述问题。本实用新型公开了一种500kV/10kV站用变压器接线结构，包括高压侧母线接口、隔离开关、断路器、接地开关、避雷器、高压侧套管式电流互感器、站用变压器、中性点接地侧套管式电流互感器、中性点接低压配电装置侧套管式电流互感器、低压配电装置侧接口，所述高压侧母线接口、隔离开关、断路器、接地开关、避雷器、高压侧套管式电流互感器、站用变压器、中性点接低压配电装置侧套管式电流互感器、低压配电装置侧接口采用单母线的接线方式依序连接，所述站用变压器通过中性点接地侧套管式电流互感器接地。
优选地，上述隔离开关单接地。
优选地，上述站用降压变压器为500kV/10kV。
优选地，上述高压侧母线接口连接500kV交流滤波器大组母线或500kV交流配电装置。 
本实用新型的有益效果为：在站用变压器的高压侧不装设独立式的电流互感器，而在站用变压器高压侧套管内装设套管电流互感器，变压器保护通过变压器套管电流互感器实现。此站用变压器在不降低换流站站用变压器运行的可靠性的基础上，节约了一组独立式电流互感器的投资，同时节省站用变压器配电装置的占地面积，具有良好的经济效益。
附图说明
图1为本实用新型的500kV/10kV站用变压器接线结构示意图。
具体实施方式
下面结合说明书附图详细说明本发明的具体实施方式。
如图1所示的本实用新型的500kV/10kV站用变压器接线结构示意图，包括高压侧母线接口1、隔离开关2、断路器3、接地开关4、避雷器5、高压侧套管式电流互感器6、站用变压器7、中性点接地侧套管式电流互感器8、中性点接低压配电装置侧套管式电流互感器9、低压配电装置侧接口10，所述高压侧母线接口1、隔离开关2、断路器3、接地开关4、避雷器5、高压侧套管式电流互感器6、站用变压器7、中性点接低压配电装置侧套管式电流互感器9、低压配电装置侧接口10采用单母线的接线方式依序连接，所述站用变压器7通过中性点接地侧套管式电流互感器8接地。通过在站用变压器的高压侧不装设独立式的电流互感器，而在站用变压器高压侧套管内装设套管电流互感器，变压器保护通过变压器套管电流互感器实现。此站用变压器在不降低换流站站用变压器运行的可靠性的基础上，节约了一组独立式电流互感器的投资，同时节省站用变压器配电装置的占地面积，在使用本实用新型的结构后，配电装置设备选用常规户外敞开式设备，具有良好的经济效益。站用变压器由站内母线降压引接是性价比较高的引接方式，故高压直流换流站中通常有1到2台站用降压变压器，提供一种优化的高压换流站内的站用变接线结构可以达到节约设备投资，节省配电装置占地的目的。
优选地，所述隔离开关2单接地。
优选地，所述站用降压变压器7为500kV/10kV。在高压直流换流站内采用单母线接线方式下，在500kV交流滤波器大组母线或500kV交流配电装置上引接的500kV/10kV站用降压变压器的是优化的接线方式。
优选地，所述高压侧母线接口1连接500kV交流滤波器大组母线或500kV交流配电装置。
本实用新型中电流互感器（6，8，9）的配置按站用变压器7保护要求配置 ，在此不再赘述。
本实用新型并不局限于前述的具体实施方式。本实用新型可以扩展到任何在本说明书中披露的新特征或任何新的组合，以及披露的任一新的方法或过程的步骤或任何新的组合。 

Claims (4)

1.一种500kV/10kV站用变压器接线结构，其特征在于包括高压侧母线接口、隔离开关、断路器、接地开关、避雷器、高压侧套管式电流互感器、站用变压器、中性点接地侧套管式电流互感器、中性点接低压配电装置侧套管式电流互感器、低压配电装置侧接口，所述高压侧母线接口、隔离开关、断路器、接地开关、避雷器、高压侧套管式电流互感器、站用变压器、中性点接低压配电装置侧套管式电流互感器、低压配电装置侧接口采用单母线的接线方式依序连接，所述站用变压器通过中性点接地侧套管式电流互感器接地。
2.如权利要求1所述的500kV/10kV站用变压器接线结构，其特征在于所述隔离开关单接地。
3.如权利要求2所述的500kV/10kV站用变压器接线结构，其特征在于所述站用降压变压器为500kV/10kV。
4.如权利要求3所述的500kV/10kV站用变压器接线结构，其特征在于所述高压侧母线接口连接500kV交流滤波器大组母线或500kV交流配电装置。
CN 201120308312 2011-08-23 2011-08-23 一种500kV/10kV站用变压器接线结构 Expired - Lifetime CN202206120U (zh)

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