GB/T 25095-2020 English PDF (GB/T25095-2020)

GB/T 25095-2020: Monitoring system of operating status for overhead transmission lines
Delivery: 9 seconds. Download (& Email) true-PDF + Invoice.
Get Quotation: Click GB/T 25095-2020 (Self-service in 1-minute)
Historical versions (Master-website): GB/T 25095-2020
Preview True-PDF (Reload/Scroll-down if blank)

GB/T 25095-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.240.20
K 40
Replacing GB/T 25095-2010
Monitoring system of operating status for overhead
transmission lines
ISSUED ON. DECEMBER 14, 2020
IMPLEMENTED ON. JULY 01, 2021
Issued by. Status Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 5
4 System composition and classification... 7
5 Technical requirements... 8
6 Test methods... 12
7 Inspection rules... 15
8 Marks, packaging, transportation, custody and storage... 16
Annex A (informative) Installation site selection... 19
Annex B (informative) Installation and maintenance instructions... 23
Monitoring system of operating status for overhead
transmission lines
1 Scope
This Standard specifies the composition and classification, technical requirements, test
methods, inspection rules, product marking, packaging, transportation, custody and
storage for monitoring system of operating status for overhead transmission lines.
This Standard applies to AC and DC monitoring systems of operating status for
overhead transmission lines.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 191, Packaging and storage marks
GB/T 2900.51, Electrotechnical terminology -- Overhead line
GB/T 6388, Transport package shipping mark
GB/T 9969, General principles for preparation of instructions for use of industrial
products
GB/T 22239, Information security technology -- Baseline for classified protection of
cybersecurity
GB/T 22240, Information security technology -- Classification guide for classified
protection of cybersecurity
GB/T 35697-2017, General technical specification for on-line monitoring device on
overhead transmission lines
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T 2900.51
as well as the followings apply.
3.1 operating status of transmission lines
The condition of the equipment during the operation of the transmission line, the
condition of the channel environment, and the influence of the surrounding
environment.
3.2 monitoring system of operating status for transmission lines
A general term for a software and hardware system used to perform on-site
measurement, information transmission, storage, processing and analysis of various
types of information such as the status of the transmission line itself and the channel
environment.
NOTE. It consists of a master station system of status monitoring, a status monitoring device and a
communication network of status monitoring.
3.3 master station system of status monitoring
A computer system that can access various monitoring information such as the status
of the transmission line itself and the channel environment, and perform centralized
storage, unified processing, analysis, display and application of data.
3.4 status monitoring device
A measuring device that collects real-time field status information such as the status of
the transmission line itself and the channel environment, and transmits the field
information to the main station system through the communication network.
NOTE. It consists of a data acquisition unit, a data monitoring terminal and a power unit.
3.4.1 data acquisition unit
A measuring device that collects real-time field status information such as the status of
the transmission line itself and the channel environment, and transmits the field
information to the main station system through the communication network.
NOTE. It consists of a data acquisition unit, a data monitoring terminal and a power unit.
3.4.2 data monitoring terminal
A device that collects information from various data acquisition units, stores and
processes it on-site, and can also exchange information with the main station system.
3.4.3 power unit
A device that provides power to the transmission line status monitoring device and has
management functions such as power status monitoring, load classification
management, and safety protection.
4.1.3 The communication network generally consists of wireless communication or
wired communication. It is used for network exchange of data information between the
monitoring device and the main station system.
4.1.4 The monitoring device generally consists of a data acquisition unit, a data
monitoring terminal and a power unit. Data acquisition units are generally divided into
wireless data acquisition units and wired data acquisition units. Data monitoring
terminals generally include a main control and processing unit, a field communication
unit, a remote communication unit, etc. Power units generally include an energy
collection unit, a battery, and a controller, etc.
4.2 System classification
4.2.1 According to the monitoring object, the monitoring system of operating status for
transmission lines is divided into two types. line body status monitoring system and
channel environment status monitoring system.
4.2.2 The line status monitoring system is used to monitor the operating status of the
foundation, tower, ground wire, insulator, hardware, grounding device and auxiliary
facilities of the transmission line. According to the functional use, it is divided into.
ground wire icing monitoring, ground wire breeze vibration monitoring, conductor
dancing monitoring, conductor temperature monitoring, conductor sag monitoring,
wind deviation monitoring, on-site pollution monitoring, fault location monitoring,
tower tilt monitoring, etc.
4.2.3 The channel environment status monitoring system is used to monitor the
meteorological environment and channel conditions of the power transmission channel.
According to the functional use, it is divided into. meteorological monitoring,
image/video monitoring, wildfire monitoring, external force damage monitoring,
geological disaster monitoring, etc.
5 Technical requirements
5.1 Master station system
5.1.1 Functional requirements
5.1.1.1 Data reception
The data receiving function of the master station system shall include.
a) It shall be able to reliably receive and store the line body and channel environment
status monitoring data (including images/videos) sent by the monitoring device;
b) It shall be able to reliably receive and store the operating status information of the
monitoring device sent by the monitoring device (including the operating status
of each component unit such as the data acquisition unit, data monitoring terminal,
power unit and host). If wireless communication is used, it shall also be able to
collect the communication signal strength of the location of the monitoring device;
c) It shall be able to adjust the operating parameters of the master station system
(such as the data collection cycle, sleep cycle, status warning value, etc. of the
monitoring device) according to the changing characteristics of the collected
parameters;
d) When problems such as main station system failure, monitoring device offline
failure, communication network failure, etc. occur, after the failure is eliminated,
the data during the interruption period shall be able to be re-recorded by calling
for retransmission and other methods.
5.1.1.2 Status analysis
The status analysis function of the master station system shall include.
a) Be able to update and maintain the basic parameter information of the line where
the monitoring device is installed, as well as match the calculation model
parameters such as line icing, sag, wind deviation, and galloping;
b) Based on the on-site monitoring data and line parameter information, it has the
function of analyzing the line operation status, and visually displays the line
operation status through wiring diagrams, maps, charts, etc. It has the function of
analyzing the historical changes of line status, and displays the changes of line
status through trend curves, charts, etc.;
c) It has the function of visually displaying various monitoring data and data
processing results. It can display monitoring data through charts, data details and
other methods.
5.1.1.3 Alarm analysis
The alarm analysis function of the master station system shall include.
a) It has the functions of collecting, processing and publishing alarm information of
the operating status of transmission lines. It can warn of abnormal status and
hidden danger risks of the line body and channel environment;
b) It has the function of reporting alarm information and its processing status;
c) It has the function of querying alarm parameter settings.
5.1.1.4 Fault diagnosis
The fault diagnosis function of the master station system shall include.
The storage capacity of the master station system shall meet the storage and
preservation requirements of monitoring data for nearly 5 years and have an automatic
data backup function.
5.1.2.2 Reliability
The main station system can operate normally for no less than 72 h continuously,
provided that the server, operating system, database and other hardware and software
configurations meet the requirements.
5.1.2.3 Security
The security of the master station system shall include.
a) The master station system shall comply with the requirements of information
system security GB/T 22239 and GB/T 22240;
b) The master station system shall not affect the security of the power system during
operation. It shall not cause power grid safety accidents due to system failures or
errors;
c) The authorized users operate the data within their authority, and the system data
design is safe and reliable.
5.2 Monitoring device
5.2.1 The appearance and structure, protection level, accuracy, function test, power
supply performance, environmental adaptability, electromagnetic compatibility,
electrical performance, mechanical performance and reliability of the monitoring
device shall comply with the requirements of GB/T 35697.
5.2.2 For the selection of the installation site for the monitoring device, please refer to
Annex A. For installation and maintenance instructions, please refer to Annex B.
5.3 Communication network
5.3.1 Network structure
The network structure of the condition monitoring system shall adopt multi-layer
distributed structure. It can support Browser/Server structure (referred to as "B/S") and
Client/Server structure (referred to as "C/S"). It can run normally in operating systems
with higher security such as LINUX.
5.3.2 Communication method
5.3.2.1 The condition monitoring system may adopt wired and wireless communication
methods.
5.3.2.2 The main wireless communication methods that can be used are. Access Point
Name (APN)-based dedicated network, power wireless dedicated network, satellite
communication, etc.
5.3.2.3 The main wired communication methods that can be used are. power fiber optic
private network, operator fiber optic private network, etc.
5.3.3 Secure access
When the monitoring device is connected to the main station system by wireless or
wired communication, information security measures shall be taken. Data interaction
and normal data communication with the main station system can be carried out. The
security access meets the requirements of GB/T 22239 and GB/T 22240.
5.3.4 Communication protocol
The application layer data transmission protocol between the master station system and
the monitoring device shall meet the requirements of GB/T 35697.
6 Test methods
6.1 Master station system test method
6.1.1 Functional test
6.1.1.1 Data reception test
Turn on the master station system. Connect the monitoring device and run it normally.
Perform the test as follows.
a) Check whether the received device monitoring data and device operation status
information are normal through the master station system;
b) Manually modify the system operating parameters in the master station system,
such as the data collection cycle and sleep cycle of the monitoring device, and
check whether the collected data interval and sleep cycle are the new setting
values;
c) After shutting down the main station system for a period of time, resume the
system and check whether the data missed during the interruption period has been
recorded.
6.1.1.2 Status analysis test
Turn on the master station system. Connect the monitoring device and run it normally.
Perform the test as follows.
a) Manually modify the basic parameter information of the monitoring device
device is connected to the main station system and operates normally, check the system
operation log, fault log, and data interface log through the monitoring main station.
6.1.2 Performance test
6.1.2.1 Storage performance test
This test is carried out simultaneously with the test in 6.1.1.1.After the monitoring
device is connected to the main station system and operates normally, check whether it
can receive data and complete data storage through the main station system.
Confirm the number of monitoring devices to be connected to the master station system.
Estimate the maximum monitoring data capacity of each monitoring device received by
the master station system each year. Based on this, determine the storage capacity
required for the master station system to operate for 5 years. Check that the actual
storage capacity of the main and auxiliary storage of the master station system shall be
more than twice the storage capacity required in the past 5 years.
6.1.2.2 Reliability test
Turn on the master station system and run it continuously for 72 h. Check whether all
functions of the master station system are normal.
6.1.2.3 Safety test
Check whether the main station system has a security level protection assessment and
security protection evaluation report i...