Description
216NG63A spare parts module
An important criterion is the
Available bandwidth and number of digital or Ethernet channels
According to the rate. Bandwidth or number
The higher the data rate, the farther
Distance protection equipment usually
Transmission time that can be reached
The shorter the interval.
For the protection system
The most important thing is
Disturbance in long-distance communication circuit must be neither
Generated at the receiving end when the corresponding command 216NG63A signal is not sent
False commands (security) should not be excessive
Delay or suppress actually sent commands (reliable
Sex).
In this regard, all teleprotection equipment must
Comply with relevant regulations in IEC 60834-1
Requirements for security, reliability and transmission time [1].
Security, reliability, transmission time and bandwidth
(or data rate) parameters are interrelated. takayasu
ABB new generation NSD570 long-distance
The protective equipment is ready to pass
10/100 Mbps interface for Ethernet
Network connection.
1 Typical protection system architecture
Substation A Substation B
High voltage transmission line
Remote protection system
Protection equipment/function Remote protection equipment/function Remote communication system Remote protection equipment/function protection equipment/function
Jamming may not generate false commands when no command is sent
(safety), and will not excessively delay or inhibit the sent command
Make (reliable).
Advanced grid protection 21
Interface between remote protection equipment and 216NG63A communication terminal
The physical characteristics can be analog circuits using audio bandwidth
Or digital/optical fiber power with specific data rate
Road, such as 64 kbps | 3.
As previously mentioned, ABB’s new generation NSD570
Remote protection equipment provides a
Complete set of interfaces, connected through 10/100 Mbps
The Ethernet connection is realized through the Ethernet port. Later, this article will
Detailed description.
Ethernet/IP based network deployment will endanger
Is remote protection safe?
Remote protection systems rely on being able to provide certainty
Signal transmission delay and constant bandwidth or ratio
Special rate, without any delay change of communication circuit.
Quasi Synchronous Digital Hierarchy (PDH) 1 and Synchronous Digital
Layered (SDH) and other static multiplexing technologies can meet this
I. It is required and has been widely used by the power system
Domain communication network has lasted for decades.
In addition, the appropriate network design adopts self-healing or
Recovery mechanism and necessary redundancy and backup methods
Law is also indispensable.
In addition to the availability of communication circuits, remote protection
Electromagnetic Compatibility of the System and Its Resistance to Fast Transient
The ability to change pulse and other external interference is also very
Important. The overall design of the remote protection system
And their respective hardware must be able to
The system can stand dry at the moment of failure
The influence of disturbance, that is, when it is most needed
Reliable transmission of protection commands.
Realize long-distance through different communication media and channels
Departure protection
Remote protection can adopt various types of
Transmission medium. Wherein, point-to-point communication circuit
Is the most common media. In addition, the following media
More common:
– Power line carrier (PLC) circuit
– Fiber optic circuits
– Copper wire/pilot cable
– Microwave wireless circuit
details: if you need an urgent delivery order, please feel free to contact us, and we will do our best to meet your needs.
Price problem: if you find that other suppliers offer cheaper prices for the same product, we are also willing to provide you with reference prices and give you further discounts.