变电站外文翻译外文文献英文文献变电站的综合概述
220kv变电站设计外文翻译
General Requirements to Construction of Substation
Substations are a vital element in a power supply system of industrial enterprises．They serve to receive ，convert and distribute electric energy .Depending on power and purpose ,the substations are divided into central distribution substations for a voltage of 110-500kV;main step-down substations for110-220/6-10-35kV;deep entrance substations for 110-330/6-10Kv;distribution substations for 6-10Kv;shop transformer substations for 6-10/0.38-0.66kV.At the main step-down substations, the energy received from the power source is transformed from 110-220kV usually to 6-10kV(sometimes 35kV) which is distributed among substations of the enterprise and is fed to high-voltage services.
电气外文文献 翻译
Circuit breaker
断路器
Compressed air circuit breaker is a mechanical switch equipment, can be i 空气压缩断路器是一种机械开关设备，能够在n normal and special conditions breaking current (such as short circuit cur 正常和特殊情况下开断电流（比如说短路电流）。
rent). For example, air circuit breaker, oil circuit breaker, interference circ 例如空气断路器、油断路器，干扰电路的导体uit conductor for the application of the safety and reliability of the circuit 干扰电路的导体因该安全可靠的应用于其中，
breaker, current in arc from is usually divided into the following grades: a 电流断路器按灭弧远离通常被分为如下等级：ir switch circuit breaker, oil circuit breaker, less oil circuit breaker, compr 空气开关断路器、油断路器、少油断路器、压缩空essed air circuit breaker, a degaussing of isolating switch, six sulfur hexaf 气断路器、具有消磁性质的隔离开关、六氟luoride circuit breaker and vacuum breaker. Their parameters of voltage, 化硫断路器和真空断路器。他们的参数有电压等级、current, insulation level of breaking capacity, instantaneous voltage off ti 开断容量的电流、绝缘等级开断时间的瞬时电压恢复和me of recovery and a bombing. Breaker plate usually include: 1 the maxi 轰炸时间。断路器的铭牌通常包括： 1.最大可承
IEC61850 外文翻译 外文文献 英文文献及翻译
IEC61850 外文翻译外文文献英文文献及翻译Modeling of Digital Protective Device According to
IEC61850
Abstract
IEC 61850 is an international standard about substation constituted
by the substation IEC TC57.It reflects the development's direction and automation tendency of automation, and arouses the widespread interest
of the domestic and foreign power industry. The transformer is a core equipment in the substation its protection, measurement and control equipments are the main equipments of substation automation system. Therefore，it is significant for us to apply the IEC 61850 standard to the Digital transformer's protection, measurement and control.
The background, the domestic and foreign present situations, the significance and the content of IEC 61850 are introduced in this paper, the analysis of IEC 61850 standard’s modeling process are described. Firstly, based on the function free
电气外文文献 翻译
Circuit breaker
断路器
Compressed air circuit breaker is a mechanical switch equipment, can be i 空气压缩断路器是一种机械开关设备，能够在n normal and special conditions breaking current (such as short circuit cur 正常和特殊情况下开断电流（比如说短路电流）。
rent). For example, air circuit breaker, oil circuit breaker, interference circ 例如空气断路器、油断路器，干扰电路的导体uit conductor for the application of the safety and reliability of the circuit 干扰电路的导体因该安全可靠的应用于其中，
breaker, current in arc from is usually divided into the following grades: a 电流断路器按灭弧远离通常被分为如下等级：ir switch circuit breaker, oil circuit breaker, less oil circuit breaker, compr 空气开关断路器、油断路器、少油断路器、压缩空essed air circuit breaker, a degaussing of isolating switch, six sulfur hexaf 气断路器、具有消磁性质的隔离开关、六氟luoride circuit breaker and vacuum breaker. Their parameters of voltage, 化硫断路器和真空断路器。他们的参数有电压等级、current, insulation level of breaking capacity, instantaneous voltage off ti 开断容量的电流、绝缘等级开断时间的瞬时电压恢复和me of recovery and a bombing. Breaker plate usually include: 1 the maxi 轰炸时间。断路器的铭牌通常包括： 1.最大可承
供电毕设(含外文文献+中文翻译)
某钢铁企业变电所保护系统及防护系统设计
1 绪论
1．1 变电站继电保护的发展
变电站是电力系统的重要组成部分，它直接影响整个电力系统的安全与经济运行，失恋系发电厂和用户的中间环节，起着变换和分配电能的作用，电气主接线是发电厂变电所的主要环节，电气主接线的拟定直接关系着全厂电气设备的选择、配电装置的布置、继电保护和自动装置的确定，是变电站电气部分投资大小的决定性因素。
继电保护的发展现状，电力系统的飞速发展对继电保护不断提出新的要求，电子技术、计算机技术与通信技术的飞速发展又为继电保护技术的发展不断地注入了新的活力，因此，继电保护技术得天独厚，在40余年的时间里完成了发展的4个历史阶段。随着电力系统的高速发展和计算机技术、通信技术的进步，继电保护技术面临着进一步发展的趋势。国外继电保护技术发展的趋势为：计算机化，网络化，保护、控制、测量、数据通信一体化和人工智能化。
继电保护的未来发展，继电保护技术未来趋势是向计算机化，网络化，智能化，保护、控制、测量、数据通信一体化发展。微机保护技术的发展趋势：
①高速数据处理芯片的应用
②微机保护的网络化
③保护、控制、测量、信号、数据通信一体化
④继电保护的智能化
1.2本文的主要工作
在本次毕业设计中，我主要做了关于某钢铁企业变电所保护系统及防护系统设计，充分利用自己所学的知识，严格按照任务书的要求，围绕所要设计的主接线图的可靠性，灵活性进行研究，包括：负荷计算、主接线的选择、短路电流计算，主变压器继电保护的配置以及线路继电保护的计算与校验的研究等等。
1.3 设计概述
供电毕设(含外文文献+中文翻译)
某钢铁企业变电所保护系统及防护系统设计
1 绪论
1．1 变电站继电保护的发展
变电站是电力系统的重要组成部分，它直接影响整个电力系统的安全与经济运行，失恋系发电厂和用户的中间环节，起着变换和分配电能的作用，电气主接线是发电厂变电所的主要环节，电气主接线的拟定直接关系着全厂电气设备的选择、配电装置的布置、继电保护和自动装置的确定，是变电站电气部分投资大小的决定性因素。
继电保护的发展现状，电力系统的飞速发展对继电保护不断提出新的要求，电子技术、计算机技术与通信技术的飞速发展又为继电保护技术的发展不断地注入了新的活力，因此，继电保护技术得天独厚，在40余年的时间里完成了发展的4个历史阶段。随着电力系统的高速发展和计算机技术、通信技术的进步，继电保护技术面临着进一步发展的趋势。国内外继电保护技术发展的趋势为：计算机化，网络化，保护、控制、测量、数据通信一体化和人工智能化。
继电保护的未来发展，继电保护技术未来趋势是向计算机化，网络化，智能化，保护、控制、测量、数据通信一体化发展。微机保护技术的发展趋势：
①高速数据处理芯片的应用
②微机保护的网络化
③保护、控制、测量、信号、数据通信一体化
④继电保护的智能化
1.2本文的主要工作
在本次毕业设计中，我主要做了关于某钢铁企业变电所保护系统及防护系统设计，充分利用自己所学的知识，严格按照任务书的要求，围绕所要设计的主接线图的可靠性，灵活性进行研究，包括：负荷计算、主接线的选择、短路电流计算，主变压器继电保护的配置以及线路继电保护的计算与校验的研究等等。
1.3 设计概述
110kV变电站电气部分设计-开题报告外文翻译
毕业设计(论文)开题报告
外语翻译
和配电系统。
电力体制改革引发了新一轮大规模电力建设热潮，极大地推动了电力技术革命中新技术、新设备的开发和应用。特别是信息技术与电力技术的结合，极大地提高了电能质量和供电可靠性。由于技术的发展降低了电力建设的成本，促进了电网设备的更新换代。以此为契机，本文以国内外配电自动化建设的一些前沿问题为背景，对当前电力系统的热点技术进行了深入的探讨和研究，主要完成了以下工作。
(1)提出了配电自动化建设的两种典型模式，即批量模式和离散模式。着重分析了离散模式下配电自动化系统的体系结构，软硬件配置的最佳通信方式、主站选择和管理方式等是本文的前提和实现平台。
(2)针对配电自动化中故障测量、定位、隔离和恢复供电的关键问题，分析线路故障时电压、电流的变化，推导出相间短路情况下故障定位的数学描述方程，并对方程的解和几个重要参数s U& s I& e I&通过对故障的自动诊断和分析，得出隔离和恢复供电的优化方案，其自动实现故障快速隔离和网络重构，减少用户停电范围和时间，有效提高配电网供电可靠性。给出了故障分段判断和网络重构的软件流程和使用方法。
(3)状态估计是实现配电自动化的关键技术之一。在描述状态估计方法的基础上，给出了不良测量数据和结构错误的识别方法，并针对窃电和漏电费问题，提出了一种实用的状态估计中拓扑错误的检测和识别方法。提出了一种通过突变和异常分析防止窃电的新方法，
并在潍坊城区配电中得到验证。
(4)针对配电网负荷预测建模困难、参数离散性大、相关因素多等问题，在分析传统负荷预测模型和方法的基础上，引入了气象因素、数据类型、社会环境影响等参数，并给出了基于神经网络的电力负荷预测方法实例，验证了该方法的正确性。
外文翻译---变电站电缆自动化系统的有效计划
Efficient Planning of Substation Automation
System Cables
Thanikesavan Sivanthi and Jan Poland
ABB Switzerland Ltd, Corporate Research,
Segelhofstrasse 1K, 5405, Baden-D¨attwil, Aargau, Switzerland
Abstract The manual selection and assignment of appropriate cables to the interconnections between the devices of a substation automation system is a major cost factor in substation automation system design. This paper discusses about the modeling of the substation automation system cable planning as an integer linear optimization problem to generate an efficient cable plan for substation automation systems.
1 Introduction
Cabling between different devices of a substation automation system (SAS) is a major cost factor in the SAS design process. Usually computer aided design software is used to create the design templates of SAS devices and their interconnections. The design templates are then instantiated in a SAS project and the cables are manually assigned to the connections. The selection and assignment of cables to connections must follow certain engineering rules. This engineering process is usually time consuming and can cause engineering errors, thereby increasing the engineering cost. Apparently, the SAS cable planning is related to the well known bin packing problem. The SAS cable planning can be formulated as an integer linear optimization problem with the cable engineering rules expressed as a set of linear constraints and a cost objective for minimizing the total cable cost. This paper describes the formulation of SAS cable planning problem as an integer linear optimization problem and presents the results for some representative test cases. To the best of the authors’ knowledge the work is the first of the kind to study SAS cable planning. The paper is organized as follows. Section 2 presents an overview of the SAS cable planning process. Section 3 expresses the SAS cable planning problem as an integer linear optimization problem. The results obtained by solving the optimization problem using some solvers is presented in Section 4. Section 5 draws some conclusions of this work.
毕业设计毕业论文电气工程及其自动化外文翻译中英文对照
毕业设计毕业论文电气工程及其自动化外文
翻译中英文对照
电气工程及其自动化外文翻译中英文对照
一、引言
电气工程及其自动化是一门涉及电力系统、电子技术、自动控制和信息技术等领域的综合学科。本文将翻译一篇关于电气工程及其自动化的外文文献，并提供中英文对照。
二、文献翻译
原文标题：Electric Engineering and Its Automation
作者：John Smith
出版日期：2020年
摘要：
本文介绍了电气工程及其自动化的基本概念和发展趋势。首先，介绍了电气工程的定义和范围。其次，探讨了电气工程在能源领域的应用，包括电力系统的设计和运行。然后，介绍了电气工程在电子技术领域的重要性，包括电子设备的设计和制造。最后，讨论了电气工程与自动控制和信息技术的结合，以及其在工业自动化和智能化领域的应用。
1. 介绍
电气工程是一门研究电力系统和电子技术的学科，涉及发电、输电、配电和用电等方面。电气工程的发展与电力工业的发展密切相关。随着电力需求的增长和电子技术的进步，电气工程的重要性日益凸显。
2. 电气工程在能源领域的应用
电气工程在能源领域的应用主要包括电力系统的设计和运行。电力系统是由发
电厂、输电线路、变电站和配电网络等组成的。电气工程师负责设计和维护这些设施，以确保电力的可靠供应。
3. 电气工程在电子技术领域的重要性
电气工程在电子技术领域的重要性体现在电子设备的设计和制造上。电子设备
包括电脑、手机、电视等消费电子产品，以及工业自动化设备等。电气工程师需要掌握电子电路设计和数字信号处理等技术，以开发出高性能的电子设备。
变电站中英文对照外文翻译文献
中英文对照外文翻译文献
中英文对照外文翻译
一般要求的变电站建设
变电站(所)在电源系统的工业企业是一个至关重要的因素。他们接收,转换和发送电能。根据能源和需求,变电站分为中央配电变电站电压为110-500kV；主要降压变电所电压为110-220/6-10-35kV；深入口变电站为110-330/6-10Kv；二次变电站的电压为6-10Kv；车间变电所电压为6-10/0.38-0.66kV。在主要的降压变电所,电源能量转化电压为110-220kV，通常使用6-10Kv(有时为35kV变电所)的电压分配给企业和被用来满足高压服务。
中央配电变电站从电力系统接收能量并分发它(不包括或者包括部分变换) 给企业不同区域，通过空中电缆和地下电缆线路电压为110-220kV。中央分配变电站站不同于主配电变电它是一个更强大的电力设施,它的电压大部分在110-220kV的电压。它可以简化初级电
压、中级电压或地区的开关电路。中低级别变电站改造能量来自6-10kv的电压,它的二次侧电压为380/220或660/380。
升压变压器变电站用于将电厂产生的能量转化使发电机产生的电压升高,从而有效地减少在远距离输电能量的损失转换器变电站的目的是为了将直流转换成交流(有时相反)和转换成能量时改变频率。转换器变电站的能量转换是用半导体整流器来变频的。带半导体整流器的转化器变电站是最经济的。6-10kV的配电变电站主要依据主配电变电站(有时依据中央配电变电站)。110-220kV变电站系统区域的划分时，根据变电站设备功能划分时是有学问的，6-10kV的变电站设备划分在变电站的入口。
变电站毕业设计~外文翻译
山东理工大学
毕业设计（外文翻译材料）
学院：专业：学生姓名：指导教师：电气与电子工程学院电气工程及其自动化韦柳军
孟繁玉
Reliability modelling and analysis for Sheffield
Substation 220 kV upgrade project
Caroline Lee Transend, Networks Pty Ltd , Tasmania
Dr Sudhir Agarwal,San Diego, California, USA
ABSTRACT
This paper describes the application of a defensible probabilistic process in reliability evaluation for Sheffield 220 kV Substation redevelopment project. Sheffield Substation is a hub of 220 kV transmission system in the North and North-West regions of Tasmania. It provides connection to West Coast and Mersey Forth hydro power stations and facilitates power transfers from these power stations to major industrial customers in George Town area and retail andindustrial loads in the North and North-West regions of Tasmania. Therefore, it is important that integrity of Sheffield Substation is protected as much as possible and consequences of unplanned outages minimised to prevent possible widespread system disturbances.Together with General Reliability from San Diego,California, Transend undertook the reliability evaluation of four redevelopment options for Sheffield Substation using SUBREL, substation reliability and TRANSREL, transmission system reliability programs.
变电站中英文资料对照外文翻译文献综述
变电站中英文资料对照外文翻译文献综述
XXX
ns are an essential part of electrical power systems。serving
as the interface een high-voltage n lines and lower-voltage n lines。They play a critical role in XXX homes。businesses。and industries.
Types of ns
There are several types of ns。including n ns。n ns。and customer XXX to the end-users and step down the voltage for n to XXX a single customer or group of customers.
XXX
ns consist of us components。including transformers。circuit breakers。switches。XXX are used to step up or step down the
voltage of the electricity。XXX are used to control the flow of
XXX to the system.
XXX
XXX stages。including site n。layout design。equipment n。XXX n lines。land availability。and environmental ns。The layout design involves determining the placement of equipment。XXX appropriate transformers。circuit breakers。and other components。n XXX equipment。wiring。and other infrastructure.
110KV降压变电站设计开题报告、文献综述、外文文献翻译
文献综述
摘要：随着工业时代的发展，电力已成为人类历史发展的主要动力资源，要科学合理的驾驭电力必须从电力工程的设计原则和方法上理解和掌握其精髓，提高电力系统的安全可靠性和运行效率。从而达到降低生产成本提高经济效益的目的。变电所是电力系统的重要组成部分，它直接影响整个电力系统的安全与经济运行，是联系发电厂和用户的中间环节，起着变换和分配电能的作用。目前，国内110kv及以下中低压变电所，主接线为了安全，可靠起见多选单母线接线。另外，合理的选择各种一次设备也能够提高变电所的安全系数及其经济性。
关键词：变电所安全可靠经济
电能是发展国民经济的基础，是一种无形的、不能大量存储的二次能源，同时也是现代社会中最重要也是最方便的能源。[3]电能的发、变、送、配电和用电，几乎是在同一时间完成的，须相互协调与平衡。[2]变电和配电是为了电能的传输和合理的分配，在电力系统中占很重要的地位，其都是由电力变压器来完成的，因此变电所在供电系统中的作用是不言而语的。
变电所是联系发电厂和用户的中间环节，起着变换和分配电能的作用。【2】因此，变电所的作用显得有为重要。首先要满足的就是变电所的设计规范。安全可靠地发、供电是对电力系统运行的首要要求。[10]
（1）变电所的设计要认真执行国家的有关技术经济政策，符合安全可靠、技术先进和经济合理的要求。（2）变电所的设计应根据工程的5~10年发展规划进行，做到远、近期结合，以近期为主，正确处理近期建设与远期发展的关系，适当考虑扩建的可能。（3）变电缩的设计，必须从全局出发，统筹兼顾，按照负荷性质、用电容量、工程特点和地区供电条件，结合国情合理的确定设计方案。（4）变电所的设计，必须坚持节约用地的原则。其次，变电所所址的选择，应根据要求，综合考虑确定。[1]设计一所安全、经济、灵活的变电站可以从以下几个方面着手。
电气工程及其自动化专业外文文献英文文献外文翻译方面
1、外文原文（复印件）
A: Fundamentals of Single-chip Microcomputer
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d e ve lo p me nt of t h e d ig ita l co m p u t e r a n d t h e i nte g rated c ircu it a rgu ab l y
t h e to w mo st s ign if i cant i nve nt i o n s of t h e20t h c e nt u ry [1].
T h ese to w t yp e s of arch ite ct u re are fo u n d in s in gle-ch ip
m i cro co m p u te r. S o m e e mp l oy t h e sp l it p ro gra m/d at a m e m o r y of t h e
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高压变电站电气一次系统毕业设计外文翻译
毕业设计（论文）外文翻译
设计(论文)题目: 高压变电站电气一次系统设计专业与班级:
学生姓名:
指导教师:
一般要求的变电站建设
变电站(所)在电源系统的工业企业是一个至关重要的因素。他们接收,转换和发送电能。根据能源和需求,变电站分为中央配电变电站电压为110-500kV；主要降压变电所电压为110-220/6-10-35kV；深入口变电站为110-330/6-10Kv；二次变电站的电压为6-10Kv；车间变电所电压为6-10/0.38-0.66kV。在主要的降压变电所,电源能量转化电压为110-220kV，通常使用6-10Kv(有时为35kV变电所)的电压分配给企业和被用来满足高压服务。
中央配电变电站从电力系统接收能量并分发它(不包括或者包括部分变换) 给企业不同区域，通过空中电缆和地下电缆线路电压为110-220kV。中央分配变电站站不同于主配电变电它是一个更强大的电力设施,它的电压大部分在110-220kV的电压。它可以简化初级电压、中级电压或地区的开关电路。中低级别变电站改造能量来自6-10kv的电压,它的二次侧电压为380/220或660/380。
升压变压器变电站用于将电厂产生的能量转化使发电机产生的电压升高,从而有效地减少在远距离输电能量的损失转换器变电站的目的是为了将直流转换成交流(有时相反)和转换成能量时改变频率。转换器变电站的能量转换是用半导体整流器来变频的。带半导体整流器的转化器变电站是最经济的。6-10kV的配电变电站主要依据主配电变电站(有时依据中央配电变电站)。110-220kV变电站系统区域的划分时，根据变电站设备功能划分时是有学问的，6-10kV的变电站设备划分在变电站的入口。
供电毕设(含外文文献+中文翻译)
某钢铁企业变电所保护系统及防护系统设计
1 绪论
1．1 变电站继电保护的发展
变电站是电力系统的重要组成部分,它直接影响整个电力系统的安全与经济运行，失恋系发电厂和用户的中间环节,起着变换和分配电能的作用,电气主接线是发电厂变电所的主要环节,电气主接线的拟定直接关系着全厂电气设备的选择、配电装置的布置、继电保护和自动装置的确定，是变电站电气部分投资大小的决定性因素。
继电保护的发展现状，电力系统的飞速发展对继电保护不断提出新的要求，电子技术、计算机技术与通信技术的飞速发展又为继电保护技术的发展不断地注入了新的活力,因此，继电保护技术得天独厚，在40余年的时间里完成了发展的4个历史阶段。随着电力系统的高速发展和计算机技术、通信技术的进步，继电保护技术面临着进一步发展的趋势。国内外继电保护技术发展的趋势为：计算机化,网络化，保护、控制、测量、数据通信一体化和人工智能化。
继电保护的未来发展，继电保护技术未来趋势是向计算机化，网络化,智能化，保护、控制、测量、数据通信一体化发展.微机保护技术的发展趋势：
①高速数据处理芯片的应用
②微机保护的网络化
③保护、控制、测量、信号、数据通信一体化
④继电保护的智能化
1.2本文的主要工作
在本次毕业设计中，我主要做了关于某钢铁企业变电所保护系统及防护系统设计，充分利用自己所学的知识，严格按照任务书的要求，围绕所要设计的主接线图的可靠性，灵活性进行研究，包括:负荷计算、主接线的选择、短路电流计算,主变压器继电保护的配置以及线路继电保护的计算与校验的研究等等。
1.3 设计概述
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附录Ⅲ
英文翻译
A comprehensive overview of substations
Along with the economic development and the modern industry developments of quick rising, the design of the power supply system become more and more completely and system. Because the quickly increase electricity of factories, it also increases seriously to the dependable index of the economic condition, power supply in quantity. Therefore they need the higher and more perfect request to the power supply. Whether Design reasonable, not only affect directly the base investment and circulate the expenses with have the metal depletion in colour metal, but also will reflect the dependable in power supply and the safe in many facts. In a word, it is close with the economic performance and the safety of the people. The substation is an importance part of the electric power system, it is consisted of the electric appliances equipments and the Transmission and the Distribution. It obtains the electric power from the electric power system, through its function of transformation and assign, transport and safety. Then transport the power to every place with safe, dependable, and economical. As an important part of power’s transport and control, the transformer substation must change the mode of the traditional design and control, then can adapt to the modern electric power system, the development of modern industry and the of trend of the society life.
Electric power industry is one of the foundations of national industry and national economic development to industry, it is a coal, oil, natural gas, hydropower, nuclear power, wind power and other energy conversion into electrical energy of the secondary energy industry, it for the other departments of the national economy fast and stable development of the provision of adequate power, and its level of development is a reflection of the country's economic development an important indicator of the level. As the power in the industry and the importance of the national economy, electricity transmission and distribution of electric energy used in these areas is an indispensable component.。Therefore, power transmission and distribution is critical. Substation is to enable superior power plant power plants or power after adjustments to the lower load of books is an important part of power transmission. Operation of its functions, the capacity of a direct impact on the size of the lower load power, thereby affecting the industrial production and power consumption.Substation
system if a link failure, the system will protect the part of action. May result in power outages and so on, to the production and living a great disadvantage. Therefore, the substation in the electric power system for the protection of electricity reliability, sensitivity and other indicators.
Power plants and substations are connected user link in the middle, transformation and distribution of electric energy to play the role. According to the different tasks substation can be divided into step-up transformer step-down transformer substation and two broad categories. Step-up substation built on the general power plant, the general step-down transformer near the load center built on the low.V oltage can also be divided according to medium voltage substation (60 kV and below), high-voltage substations (110 ~ 220 kV), EHV Substation (330 ~ 765 kV) and Ultra High V oltage Substation (1000 kV and above). In electric power system according to their status as a hub substation can be divided into the middle substation substations and terminals. This requires a substation part of economic rationality, the second part of safe and reliable, the only way to the normal operation of substation work services for the national economy. There are step-up transformer step-down transformer substation and two broad categories.Substations have been equipped with various protection devices, these devices are based on lower short-circuit load to a maximum load conditions, such as configuration settings and, therefore, in the event of the failure was similar to the specific circumstances under to judge by the system should automatically trip protection, and now the protection of the whole trip has been a very short time, the lifting of the fault, the system will automatically reclosing devices and the gateway to restore power quickly. This is to protect the lower the load is very favorable. This will not only protect the safety of the load equipment is in favor of extending the service life and reduce equipment investment, and improved reliability of electricity supply, which is to improve the efficiency of industrial and agricultural production is very effective.Substations have been equipped with various protection devices, these devices are based on lower short-circuit load to a maximum load conditions, such as configuration settings and, therefore, in the event of the failure was similar to the specific circumstances under to judge by the system should automatically trip protection, and now the protection of the whole trip has been a very short time, the lifting of the fault, the system will automatically reclosing devices and the gateway to restore power quickly. This is to protect the lower the load is very favorable. This will not only protect the safety of the load equipment is in favor of extending the service life and reduce equipment investment, and improved reliability