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10. 20kV high-voltage/low-voltage prefabricated substation YBM26 series

型号及含义
Brief introduction to the products

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产品结构
Product Structure

预装式变电站的基本结构是将高压电器设备、电力变压器、低压电器设备三个主要部分各自为一室组成“目”字型或“品”字型布置。“目”字型与“品”字型相比;“目”字型接线较为方便,故大多数采用“目”字型布置,“品”字型布置结构较为紧凑,特别是安装场所占地面积受限制时,选用“品”字型结构较为有利。

预装式变电站箱体为全密封结构,箱体材料可采用优质钢板和铝合金板、复合彩钢板、不锈钢板、玻璃纤维增强水泥板等组成,现为了与周围环境相协调,大多数箱体选用玻璃纤维增强水泥板的非金属壳体。

预装式变电站高压开关设备可根据用户需要选用产气式、压气式、真空式负荷开关,SF6负荷开关,真空断路器。高压开关设备具有“五防”功能,可满足终端、环网、双电源供电方式。预装式变电站电力变压器可选用非金合金变压器、油浸式全密封变压器、干式变压器。可配装瓦斯保护和温控保护

预装式变电站低压开关可选用ABB、施耐德及国产优质开关,电容补偿方式可实现共补、分补、全分补,过零投切等功能。

预装式变电站高低压进出线一般为电缆,特殊需要高压也可选用架空进线。在变电站内设有方便安装电缆的下人孔。各独立安装室设有随门开闭而自动关闭的照明灯。

The prefabricated substation is the basic structure of high-voltage electrical equipment, power transformers and low voltage electrical equipment in a chamber with a shaped layout of A of B of C "A" type compared with the "B" or "C" type; "A"-type connection is more convenient. So most of the "A"-type arrangements are adopted, but the "B" or "C"-shaped arrangement of the structure is more compact, especially in a restricted area of the installation place, the selection of "B" or "C"-type structure is more favorable.


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The box of the prefabricated substation is of a sealed structure. The whole structure of the material can be high-quality steel, aluminum alloy plate, composite color steel plate, stainless steel plate or glass fiber reinforced cement board etc. For the coordination with the environment, most of the boxes have adopted the glass fiber reinforced concrete boards of non-metallic shell.

The high-voltage switching equipment of the prefabricated substation can be selected according to users needs as air type, air pressure type, vacuum-type load switch, SF6 load switch or vacuum circuit breaker. The high-voltage switchgear with the "Five Anti" function can meet with the needs of the terminal, ring network or the mode of dual power supply. The power transformer of the prefabricated substation can be chosen non-gold alloy transformer, full-sealed oil-immersed transformer or dry-type transforme r,which can be fitted with gas protection and temperature control protection.

For the low-voltage switch of the prefabricated substation, the ABB, Schneider and domestic high-quality switches can be selected. The compensation types of the capacitors can be realized a total compensation, sub-compensation, all sub-compensation or zero-crossing switching functions.

The high and low voltage input and output lines of the prefabricated substation are generally cables. For the special needs of the high voltage, the overhead input line can be selected. In the substation, the human-hole for the convenience of installing cables are equipped. In the independent installation chamber, the lights are installed, which can be turned on and off automatically with the door.


技术参数
Product Structure

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使用条件
Conditions of Use

※ 海拔高度≤1000米

Height above sea level ≤ 1000 meters

※ 环境温度-30℃~+40℃

Ambient temperature -30 ℃ ~ +40 ℃

※ 空气相对湿度不超过90%(+25℃)

relative air humidity does not exceed 90% (+25 ℃)

※ 产品应安装在无火灾、无爆炸危险、无严重污染、无化学腐蚀性气体及剧烈振动的场所

The product should be installed at the site free from fire, explosion hazard, serious pollution, chemical corrosion and severe vibration.

※ 超出本技术条件规定时,由用户与制造商处理。

Beyond the provisions of the present technical conditions, it shall be dealt with by the user and the manufacturer.


运行与维护
Operation and Maintenance

高压开关使用操作与维护,应按高压开关的安装使用说明书进行。低压电器设备中,空气断路器,经过多次合、分操作后,会使主触头局部产生烧伤和碳类物质,使触头接触电阻增大,应定期对空气断路器按使用说明书进行维护。避雷器应在每年雷雨季节前进行一次预防性试验。

电能计量单元按供电部门要求定期校验。

经常观察变压器的运行情况,冷却系统是否正常,温度自动监控是否正常,变压器上层油温或线圈温度(指干式变压器)是否正常。设备的操作,维护应由合格的电气专业人员进行

The use, operation and maintenance of the high-voltage switch should be carried out according to the Instruction Manual. After many times of operations, the main contat of the air circuit breaker in the low-voltage electrical equipment would be partially burnt or carbonized to increase the contact resistance. So the air circuit breaker should be maintained regularly according to the Instruction Manual. A preventive test of the arrester should be conducted prior to the annual storm season.

The energy metering unit should be calibrated regularly according to the requirements of the power supply department.

Check regularly the operation of transformer for its cooling systems, automatic temperature monitoring, the top oil temperature or coil temperature (for dry-type transformers). The operation and maintenance of the equipment should be carried out by qualified electrical professionals.


安装
Installation

箱变的基础参考图由生产厂家根据方案提供。用户也可根据需要自行设计,但须与生厂家沟通协商。

在箱变基础的一侧及四周埋好接地极,变压器接地与防雷接地可以公用一个接地系统,引至箱式变基础平台的接地线应不少于两根,并确保接地电阻R≤4

箱式变底座与基础之间的缝隙用水泥沙浆抹封,以免雨水进入电缆室。

Shenzhen Zhongji Electric Technology Co., Ltd. based on the quality and reputation experienced in the industry for more than 20 years, our quality and service will continue to be maintained, combined with the improvement of intelligent field experts and solutions, innovative in the industry intelligent manufacturing, intelligent buildings , the smart grid multi-party field, leading the future development of the industry...
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