2.2 Main technical performance深圳国电南瑞是由原深圳南瑞电气及自动化研究院改制成立的一家专业从事电力系统保护和控制领域的技术研究、产品开发、生产销售和工程服务的大型电力自动化企业。 公司主要从事:110KV及以下变电站综合自动化系统、发电厂综合自动化系统、水电站综合自动化系统、调度综合自动化系统、工业控制自动化系统、高压谐波治理系统、微机五防系统、电力自动化智能仪表、微机消谐系统、智能开关电源直流系统、消谐消弧及过压保护装置等研究、生产、销售和服务。公司的不断开发研制适合不同用户要求的各种系列、各种规格电气自动化产品的追求、力争做国内**业性价比较优产品。 国电南瑞把“以人为本,以德为先”作为事业发展基石,强调员工和企业利益一致,公司汇聚了一批电力系统及自动化、计算机应用、自动控制和通信技术,谐波治理等各类专业的科技精英。高学历、高素质、专业化的人才队伍使科技成果迅速转化成现实的生产力。力求打造国内*自动化*。 公司始终坚持“质量**”的方针,质量控制贯穿于从研发到生产过程的每一个环节,确保生产全过程处于受控状态。严格的产品检测制度,完善的测试手段,良好的产品售前、中、后服务。公司严格按照ISO9001的质量技术认证要求,先后荣获:中国电力自动化**企业、质量信誉、服务AAA企业、中国着名品牌、质量服务双****单位等。 服务中国电力,打造世界品牌,国电南瑞凭借自身实力已服务在全国的各类行业,部分有:陕西送变电工程、珠海湛江35KV变电站、鞍钢钢铁、上海宝钢、河南王杭庄煤矿、山西同煤潞安煤矿、山西沁新选煤、神华煤矿、辽阳水泥、洛钼集团、江西双张化工、贵州水城、河南义马矿、西电东送、京福高速、遵义供电局、南方电网、三峡工程等大型重点工程项目。 国电南瑞坚持“永远保持战略成员之一”的公司理念,坚持科技创新、不断突破自我!把握产业和行业发展趋势,孜孜以求地完善产品品质,坚持改革创新,力求持续改进。公司成立多年来,依靠人才优势、技术创新和良好的管理体制,研发、销售、工程服务得到全面发展。致力于民族高科技产业的发展,不断追求卓越,为中国电力的发展做出更多的贡献,是国电南瑞永恒的追求。
Precise working range of 2.2.1 sampling circuit (10% error)
Voltage: 0.4 V ~ 120V
Current: 0.08In20In
2.2.2 contact capacity
Signal circuit contact current carrying capacity 400VA
Signal circuit contact fault arc capacity 60VA
2.2.3 tripping current
Breaker trip current 0.5A~4A (order indication)
The circuit breaker closing current 0.5A~4A (the order stated)
2.2.4 precision of various components
Current component: <5%
Voltage components: <5%
Time element: 0s-1s, the error is not more than 40ms;
1s above, the error is not more than < + 2.5%;
Frequency deviation: <0.02Hz
device overview
SAI3880D series digital generator protection device with high performance chip supports universal hardware platform, easy to maintain; the Ethernet communication, high-speed data transmission and reliable. Complete localization of Chinese display technology, simple operation.
Based on waterproof, dust, anti vibration design, can be run in a variety of field conditions.
Suitable for capacity of 50MW and below the fire and hydro generator protection.
1.2 main features of the device
An Motorola 32 bit microcontroller technology, the stability and speed of products is guaranteed
The protection. The 14 bit a / D converter, optional measurement module dedicated to the A / D conversion accuracy is up to 24 bits and the measurement indicators easily reach
The purpose of configuration with high capacity RAM and Flash Memory, can record 8 to 50 recorded reports, record the number of events is not less than 1000
An independent tuning of 32 sets of protection setting value, safe and convenient switch
In high precision clock chip, and equipped with GPS hardware circuit for the whole time, system clock synchronization
It is equipped with high speed Ethernet communication interface, and the integration of IEC870-5-103 standard communication protocol
In the electrical design with the machine, no adjustable device
In high grade, quality assurance component selection
An excellent anti-interference performance, panel or installed in the switch cabinet without other anti-jamming module
The purpose of self diagnosis function perfect
The chassis design of waterproof and dustproof and anti vibration.
The purpose of debugging conceptual design
3.10 stator overvoltage protection
For generator, in particular to a hydro generator, after load rejection due to the speed control of speed control system can not keep up, is easy to appear the stator voltage exceeds the allowed range of over voltage phenomena; at this point to be equipped with over voltage protection, protection from the generator terminal voltage when any phase of more than setting value by setting the delay action to stop.
3.11 stator ground protection
Generator stator grounding protection can for the generator neutral point ungrounded or via arc suppression coil grounding grounding, protection from the generator end opening of the delta winding voltage when open delta windings voltage greater than setting value by setting the exit delay.
1.3 function configurationFunction configuration of SAI3880D digital generator differential protection deviceDifferential quick break, ratio brake differential, CT disconnection locking differential, CT disconnection alarm, stator overvoltage protection, stator ground fault protection, overload alarm, anti time overcurrent protectionFunction configuration of backup protection device for SAI3881D digital generatorTransverse differential protection, loss of excitation protection, rotor one point grounding protection, rotor two points grounding protection composite voltage over current protection, inverse time negative sequence overcurrent protection, Pt disconnection alarm, non electricity protection (generator water shutoff, and the generator thermal, generator excitation accident, main steam valve closed),