2025-03-31
在工業(yè)高壓配電系統(tǒng)中，高壓互感器（High Voltage Current Transformer, HV CT）的型號(hào)區(qū)別主要基于：電壓等級(jí)、結(jié)構(gòu)類型、安裝方式、精度等級(jí)、絕緣材料等因素。以下是詳細(xì)的分類和型號(hào)區(qū)別說(shuō)明，供您參考：1. 按電壓等級(jí)分類互感器以及應(yīng)用場(chǎng)景工業(yè)高壓配電系統(tǒng)常見的電壓等級(jí)包括 10kV、35kV、66kV、110kV、220kV等，不同電壓等級(jí)對(duì)應(yīng)不同的互感器型號(hào)：- 10kV 高壓互感器（如LZZBJ9-10）：適用于工廠配電、中小型變電站。 - 35kV 高壓互感器（如LZZBW-35）：用于中型工業(yè)配電、區(qū)域電網(wǎng)。 - 66kV/110kV 高壓互感器（如 LVQB-110）：適用于大型工業(yè)用電、發(fā)電廠并網(wǎng)。 - 220kV 及以上（如 TYD-220）：主要用于超高壓輸電系統(tǒng)。 2. 按互感器結(jié)構(gòu)類型分類及適用領(lǐng)域（1）干式（環(huán)氧樹脂澆注式）-型號(hào)示例：LZZB、LZZBJ、AS12 - 特色： l - 無(wú)油設(shè)計(jì)，免維護(hù)，防火防爆。 - 適用于 10kV~35kV 配電柜、開關(guān)柜。 - 常見于工廠、商業(yè)建筑、數(shù)據(jù)中心 （2）油浸式- 型號(hào)示例：JDJ、JDZ、JDZX - 特點(diǎn)： - 采用變壓器油絕緣，散熱性好，適用于 35kV~220kV。 - 多用于 戶外變電站、發(fā)電廠。 （3）SF6氣體絕緣（4）- 型號(hào)示例：LVQB、GIS-CT - 特點(diǎn)： - 采用 六氟化硫（SF6）絕緣，體積小，適用于 66kV~550kV。 - 主要用于 GIS（氣體絕緣開關(guān)設(shè)備）。 （5）電子式（光學(xué)互感器）（6）型號(hào)示例：ROG-CT、EVT - 特點(diǎn)： - 無(wú)鐵芯，采用 ：光纖傳感技術(shù)，適用于智能電網(wǎng)（數(shù)字化變電站）。 - 精度高（0.2S級(jí)），抗電磁干擾強(qiáng)。 3. 按精度等級(jí)分類及適用領(lǐng)域不同應(yīng)用場(chǎng)景對(duì)精度要求不同，常見等級(jí)：- 0.1級(jí) / 0.2級(jí)（電能計(jì)量，如電表） - 0.5級(jí)（一般工業(yè)測(cè)量） - 1級(jí) / 3級(jí)（繼電保護(hù)，如短路檢測(cè)） - 5P / 10P（保護(hù)級(jí)，如過(guò)流保護(hù)） 4. 按絕緣材料分類| 絕緣類型 | 型號(hào)示例 | 特點(diǎn) || 環(huán)氧樹脂 | LZZB、AS12 | 防潮、阻燃，適合戶內(nèi) || 硅橡膠 | LZZBW | 耐紫外線，適合戶外 || 陶瓷絕緣 | JDZX | 耐高溫，用于特殊環(huán)境 || 復(fù)合絕緣 | LVQB | SF6+環(huán)氧樹脂，用于GIS |5. 工業(yè)應(yīng)用選型指南| 應(yīng)用場(chǎng)景 | 推薦型號(hào) | 關(guān)鍵參數(shù) || 工廠10kV配電 | LZZBJ9-10 | 0.5級(jí)，環(huán)氧樹脂澆注 || 戶外35kV變電站 | LZZBW-35 | IP65防護(hù)，硅橡膠外殼 || 發(fā)電廠110kV保護(hù) | LVQB-110 | 5P20級(jí)，SF6絕緣 || 智能電網(wǎng)數(shù)字化站 | EVT-220 | 電子式，0.2S級(jí) |6. 如何選擇合適的型號(hào)？1. 確定電壓等級(jí)（10kV/35kV/110kV）。 2. 選擇結(jié)構(gòu)類型干式/油浸/SF6）。 3. 明確用途（計(jì)量/保護(hù)）。 4. 考慮安裝方式（貫穿式/支柱式）。 5. 核對(duì)精度要求（0.2級(jí)/0.5級(jí)/5P級(jí)）。 客戶需要說(shuō)明應(yīng)用場(chǎng)景，額定電壓等級(jí)、負(fù)載、變比、保護(hù)等級(jí)、容量大小等參數(shù)以便于我們進(jìn)一步推薦匹配的型號(hào)！In industrial high-voltage power distribution systems, the models of high-voltage current transformers (HV CT) are mainly based on factors such as voltage level, structure type, installation method, accuracy level, and insulation material. The following is a detailed description of the classification and model differences for your reference:1. Classification of transformers by voltage level and application scenariosCommon voltage levels of industrial high-voltage power distribution systems include 10kV, 35kV, 66kV, 110kV, 220kV, etc. Different voltage levels correspond to different transformer models:- 10kV high voltage transformer (such as LZZBJ9-10): suitable for factory power distribution, small and medium-sized substations.- 35kV high voltage transformer (such as LZZBW-35): used for medium-sized industrial power distribution and regional power grids.- 66kV/110kV high voltage transformer (such as LVQB-110): suitable for large industrial electricity and power plant grid connection.- 220kV and above (such as TYD-220): Mainly used in ultra-high voltage transmission systems.2. Classification by transformer structure type and applicable fields(1) Dry type (epoxy resin casting type)-Model examples: LZZB, LZZBJ, AS12- feature:l - Oil-free design, maintenance-free, fire-proof and explosion-proof.- Suitable for 10kV~35kV distribution cabinets and switch cabinets.- Commonly found in factories, commercial buildings, data centers(2) Oil-immersed- Model examples: JDJ, JDZ, JDZX- Features:- Adopt transformer oil insulation, good heat dissipation, suitable for 35kV~220kV.- Mostly used in outdoor substations and power plants.(3) SF6 gas insulation(4) - Model examples: LVQB, GIS-CT- Features:- Using sulfur hexafluoride (SF6) insulation, small size, suitable for 66kV~550kV.- Mainly used in GIS (Gas Insulated Switchgear).(5) Electronic type (optical mutual inductor)(6) Model examples: ROG-CT, EVT- Features:- Coreless, using: fiber optic sensing technology, suitable for smart grid (digital substation).- High precision (0.2S level), strong resistance to electromagnetic interference.3. Classification by accuracy level and applicable fieldsDifferent application scenarios have different requirements for accuracy. Common levels are:- Class 0.1/Class 0.2 (Energy measurement, such as electric meters)- Class 0.5 (general industrial measurement)- Class 1 / Class 3 (Relay protection, such as short circuit detection)- 5P / 10P (protection level, such as overcurrent protection)4. Classification by insulation material| Insulation Type| Model Example| Features|| Epoxy resin | LZZB, AS12 | Moisture-proof, flame-retardant, suitable for indoor use || Silicone rubber | LZZBW | UV resistant, suitable for outdoor use || Ceramic insulation | JDZX | High temperature resistance, used in special environments || Composite insulation | LVQB | SF6+epoxy resin, for GIS |5. Industrial Application Selection Guide| Application scenarios| Recommended models| Key parameters|| Factory 10kV power distribution | LZZBJ9-10 | 0.5 grade, epoxy resin casting || Outdoor 35kV substation | LZZBW-35 | IP65 protection, silicone rubber housing || Power plant 110kV protection | LVQB-110 | 5P20 grade, SF6 insulation || Smart Grid Digital Station | EVT-220 | Electronic, 0.2S Class |6. How to choose the right model?1. Determine the voltage level (10kV/35kV/110kV).2. Select the structure type (dry type/oil immersed/SF6).3. Clarify the purpose (measurement/protection).4. Consider the installation method (through-type/pillar-type).5. Check accuracy requirements (0.2 level/0.5 level/5P level).Customers need to explain the application scenario, rated voltage level, load, transformation ratio, protection level, capacity and other parameters so that we can further recommend matching models!
