| 引用本文: | 赵玉林,李丽贞,李海凤,赵 琦.无触点有载调压配电变压器光纤启动方案[J].电力自动化设备,2016,36(2): |
| ZHAO Yulin,LI Lizhen,LI Haifeng1,ZHAO Qi.Optical fiber start scheme in contactless distribution transformer with OLTC[J].Electric Power Automation Equipment,2016,36(2): |
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| 摘要: |
| 提出一种以双向晶闸管（TRIAC）作为启动开关，基于光纤触发的无触点有载调压配电变压器启动方案。该方案中启动电路与变换分接头时的过渡回路共用1个支路：上电时该支路投入，启动变压器工作；变换分接头时，该支路投入，将过渡电阻串入分接头变换过渡回路，限制环流。启动或分接头变换完成后，TRIAC截止，该支路退出。双向晶闸管触发电路采用高压自取能随机触发方式，电路简单，工作可靠。针对该方案进行了主要电子元件的选型及参数的设计并进行了模拟实验。实验结果表明，该方案的电路设计及元件参数选择方法能满足无触点有载调压配电变压器对启动单元和过渡支路的要求。 |
| 关键词: 有载调压 变压器 启动单元 双向晶闸管 光纤触发 自取能 |
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| 基金项目:黑龙江省高校科技成果产业化前期研发培育项目（1252CGZH30）；哈尔滨市应用技术研究与开发项目（2013DB-2BG015） |
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| Optical fiber start scheme in contactless distribution transformer with OLTC |
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ZHAO Yulin1, LI Lizhen1, LI Haifeng11, ZHAO Qi2
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1.School of Electrical Engineering and Information，Northeast Agriculture University，Harbin 150030，China;2.State Grid Harbin Power Supply Company Substation Maintenance Room，Harbin 150036，China
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| Abstract: |
| A kind of start scheme based on optical fiber trigger is proposed for the contactless distribution transformer with OLTC（On Load Tap Changer），which adopts the TRIAC（TRIode AC semiconductor switch） as the start-up tap. The start-up circuit shares the same branch with the transition branch for tap switch. When the transformer is powered up，the shared branch is put into operation to start it. When the tap is switched，the shared branch is put into operation to connect the transition resistance into the tap switch transition circuit for circuit current limitation. After the transformation is started or the tap switch is completed，the TRIAC is cut-off to quit the shared branch. The TRIAC triggering circuit adopts high voltage self-power-supply mode，which is simple and reliable. The types of main electric elements are selected and their parameters are designed for the proposed scheme，and the simulation experiment is carried on. The experimental results show that the circuit design and element parameter selection method of the proposed scheme can satisfy the requirement of contactless distribution transformer with OLTC for starting unit and transition branch. |
| Key words: on load tap changing electric transformers starting unit TRIAC optical fiber trigger self supply power |
