{"version":"1.0","provider_name":"LS\u96fb\u6e90\u30c8\u30e9\u30f3\u30b9\u3001\u7089\u3067\u306f\u3001\u9ad8\u96fb\u5727\u30c8\u30e9\u30f3\u30b9\u3001\u6cb9\u5165\u5909\u5727\u5668-\u9577\u6c99(\u9577\u6c99\u7687\u51a0\u4eee\u65e5\u9152\u5e97)\u5eec\u5c71\u96fb\u5b50\u6280\u8853\u682a\u5f0f\u682a\u5f0f\u4f1a\u793e","provider_url":"https:\/\/www.lstransformer.com\/ja","author_name":"xiangligougou","author_url":"https:\/\/www.lstransformer.com\/ja\/author\/xiangligougou\/","title":"Hydropower Generation\uff5cHydraulic-excitation-system Case - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"FvNxxSysR0\"><a href=\"https:\/\/www.lstransformer.com\/ja\/hydropower-generation%ef%bd%9chydraulic-excitation-system-case\/\">\u6c34\u529b\u767a\u96fb\uff5c\u6cb9\u5727-\u52b1\u8d77\u30b7\u30b9\u30c6\u30e0\u306e\u5834\u5408<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.lstransformer.com\/ja\/hydropower-generation%ef%bd%9chydraulic-excitation-system-case\/embed\/#?secret=FvNxxSysR0\" width=\"600\" height=\"338\" title=\"&#8220;Hydropower Generation\uff5cHydraulic-excitation-system Case&#8221; &#8212; LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD\" data-secret=\"FvNxxSysR0\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.lstransformer.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>","description":"Hydropower generation converts mechanical energy from water-driven hydro-turbine rotation into electric energy by synchronous generators. Excitation systems function as the \u201ccontrol heart\u201d of synchronous generators. They regulate DC currents inside excitation windings to control generator-terminal voltages and output reactive-power magnitudes. Operating-condition fluctuations are obvious in hydropower houses: variations of upstream water levels, load increase-decrease transitions and grid-side disturbances plus unit grid-connection and start-stop processes all bring drastic excitation-loop-load changes. Power-house workshops sustain year-round high-humidity and water-vapor-laden conditions; some underground workshops have limited ventilation and equipment readily suffers dew-condensation. Excitation systems adopt thyristor-rectifier schemes. Rectification processes generate massive harmonics and induce equipment-over-heating and current-ripple phenomena. Designed for steady-state power-frequency loads, general-purpose [&hellip;]"}