经典的出国调试英语文本

Electrical System in Power Plant
电厂电气系统
The power generating system and its auxiliaries are
as following:
发电系统及其附属设备如下：
generator 发电机
hydrogen gas control system 氢气控制系统
seal oil system 密封油系统
static excitation system 静止励磁系统
instrument transformer current limiting fuse and surge
absorber 仪用变压器，限流熔断器和过流电压吸收器
generator neutral grounding equipment
发电机中性点接
地系统 isolated-phase bus
Sorry, I’m not sure I have understood all of it. Do you mean
that’s the difference between synchronous generator and induction generator?
对不起， 我不能确定我已经懂了，你的意思是，那就是同步发电机和异步发电机的区别吗？
Excitation with DC exciter直流励磁机励磁
Excitation with AC exciter交流励磁机励磁
Rotating exciter 旋转励磁机
Static exciter 静止励磁机
Main exciter 主励磁机
Pilot exciter 副励磁机
Automatic voltage regulator 自动电压调节器
Power system stabilizer 电力系统稳定器
Over-excitation limiter 过励磁机限制器
Minimum excitation limiter 最低励磁限制器
Hydrogen cooling 氢冷
Air cooling 空冷
Could you introduce the outline of the electrical
system of the power plant?
你能介绍一下该电厂的电气
系统概况吗
All right,let’s look at the electrical mimic board so as to help
you to understand better.
行，让我们看这个电气模拟盘，这会帮助你们更好的理解。
Here are the main connection and unit connection system.
That is to say, each generator is connected to 220KV switch-yard
through its own main transformer. The 220KV switchyard
here is a double bus-bar system with by-pass.
这里是主接线和单元接线。 也就是说，每台发电机经各自的主变压器接入220KV开关站。220KV开关站为双母线带旁路系统。
Single bus scheme (connection)单母线接线图
Block connection 单元接线图
Sectionalized double bus scheme 双母线分段接线
The next important portion is the auxiliary power system.
Each unit is equipped with one high voltage unit auxiliary
transformer, and it’s high voltage side is connected to the isolated
phase bus(IPB) of the generator. One common/stand-by transformer (C/ST) is installed for two units, while each unit is equipped with 400V power center (PC) and 400V motor control center (MCC) to feed its own low voltage loads.
下一重要部分是厂用电系统， 每台机组设置一台高压厂用电变压器，起高压侧与发电机分相封闭母线相连，两台机设一台共用／备用变压器，而每台机分别设置400V动力中心和400V电动机控制中心为本机组低压负荷供电。
In addition, the emergency PC is fed from 400V PC during normal condition
and from emergency diesel generator in case of the lack of AC power.
另外，正常保安PC由400V PC供电，当失去交流工作电源时，由事故备用柴油发电机供电
What is the scope of supply provided by the contractor of the
electrical island?
电气岛承包商的供货范围是什么？
The contractor of the electrical island is responsible for the
following scope of supply and scope of design：
电气岛承包商负责以下供货范围和设计：
generator and accessories
发电机及其附属设备
low voltage auxiliary transformer for circulating water pump
house and general service water system.
循环水泵房和工业水泵房系统的低压厂用变压器
power center (PC) for circulating water pump house , general service water system and motor control center(MCC) within the island.
循环水泵房、工业水泵房系统动力中心（PC）和本岛内电动机控制中心（MCC）
control and protection for auxiliary power system
厂用电系统的控制与保护

motor 电动机
grounding system 接地系统
lighting protection system 防雷系统
lighting system 照明系统
cable and cable raceway system 电缆及电缆管道系统
substation 变电站（所）

circuit breaker 断路器
interlock 连锁
As far as the shop tests is concerned, I suggest that the
shop tests for the generator shall include ( but not limited to)
the above items. The contractor should test the material, accuracy
of parts and main parts to ensure to meet the
requirements of relevant criteria, and submit the standards, necessary initial data and results of tests to the owner.
关于车间试验，我建议，发电机的车间试验包括（但不限于）以上的项目。承包商应对原材料、零部件精度和主要部件进行检验，保证其符合有关标准，并向业主提供试验标准，必要的原始数据和实验结果。
I can’t work out how much time it’ll take, but I am very optimistic about the acceptance test.
虽然我说不准试验要花多少时间，但我对这个验收试验非常乐观。
Are you sure about the result of the generator and exciter temperature-rise test? How long it will take for this acceptance test?
你对发电机和励磁机温升试验有把握吗？这个验收试验要花多长时间？
Non-load and steady state shout-circuit performance measurement for generator and exciter
发电机和励磁机空载特性和稳态短路特性测量
AC withstand voltage test
交流耐压试验
operation condition test for oil and hydrogen control system
油和氢气控制系统的运行状况试验
generator active and reactive power output test
发电机有功和无功出力试验
generator hydrogen-leaking measurement
发电机漏氢实验
generator absorbing reactive capability test
发电机无功吸收能力试验
AC exciter and pilot exciter characteristic test
交流励磁机和副励磁机特性试验
simulating action test of each protecting and monitoring device
保护和监视设备的模拟试验
test for voltage regulating range measurement for AVR
自动电压调节器电压调整范围试验
what about the short-time thermal capability of the generator?
发电机的端是耐热性能怎么样
The generator stator winding are capable of operating at
130% of rated stator current for at least one minute starting from
stabilized temperatures at rated conditions. And the rotor
winding is capable of operating of rated load field voltage
for at least one minute starting from stabilized temperatures
at rated conditions.
发电机定子绕组能从额定工况时的稳定温度开始，在额定定子电流130％下至少运行一分钟；发电机转子绕组能从额定工况时的稳定温度开始，在额定负荷磁场电压的125％下至少运行一分钟
What is the generator loss composed of?
发电机损失由什么组成
The generator loss is composed of iron loss, bearing friction loss, bushing friction loss and windage loss.
发电机损失由铁阻、轴承摩擦损失、套管摩擦损失和风阻组成
what are the abnormal operating modes of a generator?
发电机异常运行方式有哪些？
They are: under frequency operation, overload operation, abnormal voltage operation, unbalanced current condition, motoring, transient and fault condition.
它们是：低周波运行、超负荷运行、异常电压运行、不平衡电流工况、电动回转、暂态工况和故障工况
what chemical is used in the hydrogen gas dryer?
氢气干燥器里用的是什么化学药品
The dryer contains activated alumina used as a moisture absorbent.
干燥器中含有活化凡作为吸湿剂
what is the cooling system of the generator?
这台发电机的冷却系统是怎样的
The generator is of water cooled stator winding, hydrogen cooled core and hydrogen cooled rotor type
这台发电机是水冷定子绕组、氢冷铁芯和转子的氢冷型
Please describe the seal oil working route of the generator.
请谈一谈发电机的密封油的工作路径
Well, the air-side and the H2-side seal oil system are separate.
The H2-side seal oil returns to the H2-side of the seal ring in
the generator and prevents absorbed
H2 in the oil from escaping to the outside atmosphere.
好吧，空气侧和氢侧的密封油系统是分开的。氢侧的密封油返回到发电机密封环的氢侧，并防止将油中易吸收的氢气逸入外部大气中。
In a similar way, the air-side seal oil returns to the air-side
of the seal ring and prevents absorbed air or moisture
from being released into the H2 compartment of the generator.
同样的，空气侧密封油则返回到密封环的空气侧，并防止将油中已吸收的空气或湿气逸入发电机的氢气室
The seal oil is supplied to the air-side of the seal ring
at a pressure above the generator
gas pressure. The H2-side seal oil is maintained at the same pressure by means of pressure-equalizing valves.
密封环空气侧的密封油供油压力大于发电机的气压、氢侧的密封油则用均压阀也维持在这同一压力供油
How much is the rating of the excitation system above that
of the generator field current?
励磁系统的电流额定容量比发电机磁场电流容量高多少
It should be at least 10% above.
至少高10％
How fast will an increment of the excitation voltage reach 95% of the difference between ceiling voltage and the system voltage rating.
励磁电压增加到最高电压和系统额定电压之差的95％时要多少
within 0.1second
一秒之内
What is the limit of voltage regulation error of the generator?
发电机调压误差的极限是多少
The voltage regulation error of the generator shall not more than 0.5% of the voltage rating.
发电机调压误差应不大于额定电压的0.5％
Is there any reactive power error control in AVR?
自动调压器有无功功率误差控制吗？
Yes. It is adopted as an additional generator error control.
有，它是作为发电机附加的误差控制而被采用的
What is the function of a cosine phase shifter?
与弦移相器有什么用处
A cosine phase shifter is applied in phase shifting circuit
to meet the possible maximum trigger current and voltage of thruster.
移相线路中配有与弦移相器以满足可控硅整流器最大可能触发电流和电压
What is the rated continuous current of the isolated phase bus?
分相封闭母线的额定连续电流是多大
The main bus is 15000A, the tapped bus and neutral bus are both 1000A
主母线是15000A，分接母线和中性母线都是1000A
What are the main power transformer?
电力变压器有哪些
They are the main transformer, the start-up/stand-by transformer and the unit auxiliary transformer.
它们为主变压器、启动／备用变压器和单元厂变（工作变）
What kinds of equipment does an on-load tap changer comprise?
有载分接开关包括些什么设备
It comprises liquid immersed arc-quenching tap switch,
tap selector driven mechanism and automatic control devices
suitable for remote control
它包括浸末式灭弧开关，分接选择器驱动机构和用于远控的自动控制装置
We know there is a SF6 gas insulated circuit breaker with your 6.3KV metal-clad switchgear. Would you please tell us something about its advantages？
我们知道你们6.3KV铠装开关装置有SF6的气体绝缘断路器，请你给我们谈谈它的优点好吗
A SF6 gas circuit breaker has three advantages:
它有三个优点
Its transient voltage at breaking is low. Then there is no
need to have any special countermeasures in a load-side equipment.
它开关时的暂态电压很低，所以对负荷侧设备不需采取任何专门的对应措施
It is excellent in a small circuit breaking.
它对小型断路效果特优
As the SF6 circuit breaker has an abnormality detection
system for a sudden gas leakage , it has very high reliability in operation.
有与六氟化硫断路器对突发性的气体泄流有一个探测异常情况的系统，所以运行可靠性很高。