1) 220 kV voltage grade
220kV电压等级
2) 220 kV high voltage cable
220kV高压电缆
3) Voltage level
电压等级
1.
Voltage Level Scheming and Feeding Modes Selection of Urban Distribution Network;
城市配电网电压等级及供电模式选型研究
2.
Optimized selection of voltage level in rural medium – voltage power distribution network
农村中压配电网电压等级的优化选择
3.
The paper explained the selection of voltage level for the public and the exclusive electric network by technical and economic analysis of power system operation according to the increasing generated electricity and demanded electricity.
根据当前发电量及用电量的不断增加,通过对电网运行技术经济性比较,阐述了公用电网及用户接入电网电压等级的选择与确定。
4) voltage levels
电压等级
1.
An investigation on the application of 20kV voltage levels for Tianjin Binhai district medium-voltage power distribution network;
天津滨海新区中压配电网20kV电压等级应用的研究
2.
Rational scheming of voltage levels is an effective means and an important measure to improve the distribution network transmission capacity,reduce loss,improve system stability.
配电网电压等级的优化配置是提高配网输送能力、降低网损、提高系统稳定性的有效手段和重要措施。
3.
The instance shows the advantage of 20 kV transformer station construction on the economic aspect by comparing with other voltage levels.
针对江苏省初步采用20 kV电压等级代替10 kV、35 kV电压等级,通过实例对采用20 kV供电客户端变电所建设投资的经济性优势作了分析,可供20 kV电压等级供电用户的推广应用参考。
5) voltage class
电压等级
1.
On the base of analysis on status of Jilin grid , some problems are permitted about 10,66,220,500 kV voltage classes that existed weak structure, worse stability and part of old equipments.
在分析吉林省电网现状基础上 ,提出了 10、6 6、2 2 0、5 0 0 k V电压等级电网存在结构薄弱、系统运行稳定性差、部分设备老旧等问题 ,建议省公司突出电网建设和经济效益 ,确定电网建设的侧重点 ,提出不同电压等级电网的建设原
2.
The economic laws of HVDC systems in different voltage class are analyzed, and the economic power transmission distances of HVDC power transmission technologies for different voltage classes are estimated and calculated.
提出了对±1000、±800、±660和±500kV直流输电电压等级的单位到网容量经济指标进行比较研究的方法,分析了不同电压等级直流输电的经济规律,测算了不同电压等级直流输电技术的经济输电距离,结果表明:±500kV直流输电技术的经济输电距离小于1100km,±660kV直流输电技术的经济输电距离为900～1700km,±800kV直流输电技术的经济输电距离为1200～2700km,±1000kV直流输电技术的经济输电距离在1800km以上。
6) voltage grade
电压等级
1.
Based upon the requirements of the Shanghai central urban district planning and construction, the electric power overhead lines will be replaced by underground cables, providing an excellent environment for the grid reform, structure optimization and the simplification of voltage grades.
根据上海中心城区规划建设要求,电力架空线路将逐渐电缆化和入地敷设,这给电网改造、优化结构和简化电压等级提供了良好环境。
2.
Combining with the condition of our country ,It analyzes the problem existing on the structure of network frame and voltage grade connect by increase one 380kV Voltage grade as an assume,avoiding large short circuit over breaker cut ability in order to match 600 MW unit s development,Suggestion is presented by adopting five-grade standard as ideal gradation.
分析电网网架结构和电压等级所存在的问题 ,提出需要增加一级 380 k V的电压等级作为省网网架电压的设想 ,与今后重点发展的 60 0 MW机组相匹配 ,避免 5 0 0 k V网络过大造成短路电流大到超过开关遮断容量情况的出现。
3.
To suit the practical demands of power grids that are different and consecutive under various development stages,it is dissertated that two EHV voltage grades should be configured for EHV power grid to meet the needs of its continuous multistage development,the pragmatic experiences from many other countries are renewedly checked up and compared.
从适应电网各个发展阶段中不同而又连续的实际需要出发 ,对照其他国家的实用经验 ,论述了电网在超高压段内应具备两个电压等级才能适应其多阶段持续发展的需要。
补充资料：变频器电压等级的合理选定
我们通常所称的高压变频器，国外通常称为中压变频器(Medium Voltage Drive),其实所说的是同一回事，这里有个习惯的问题。
其对应的负载动电机的电压等级一般为2.3kV-13.8kV,我国以6kV,10kV为主，还有少量的3kV等级。西方认为这个电压范围相对输电电网的高压而言，为“中压”，故习惯成为中压电机和中压变频器。国内则习惯将对应的电机称为高压电机，所以相应的变频器也通常称为高压变频器。
变频器电压等级的选择很有讲究，对我国而言，6kV,3kV和10kV甚至690V的电机在市场上都可以得到，由于变频器输出电压等级和成本的限制，便产生了直接高压输出，高-低-高方案，电机星形改三角形方案，高压电机改成低压电机等等，从而产生了一些不同的看法。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条