Introduction
NGP-900 local monitoring system is based on the current substation automation background monitoring system of the computer, using international standards, multi-window multitasking system, running on Chinese WINDOWS 98 WINDOWS NT or above operating system environment, stable operation, high reliability, easy operation learn.
2, the system performance
As the use of high performance, high reliability industrial control machine, MTBF over 25,000 hours running time, software modular design, flexible configuration database in real time, greatly improving the reliability of the system. In addition, good compatibility and reliability of the system, Windows NT or Windows 98 operating environment above, open software work platform, easy upgrade and expansion.
Specific system performance as follows:
1) Data Update
Important telemetry update cycle <1S
General telemetry update cycle <2S
Minor telemetry update cycle <4S
2) remote signal transmission time when the accident displacement <1S
3) Accident push screen time <1S
4) sequence of events (SOE) between stations resolution <2ms
5) Remote control remote adjustment command transfer time <1S
6) the screen is called the real-time response time <2S
7) Real-time data screen refresh cycle <2S
8) remote signal processing accuracy: 100%
9) Remote control remote adjustment accuracy: 100%
10) system availability> 99%
11) Communication speed: 150X X (X = 1,2,4,8,16,32,64) dB
12) Time Between Failures MTBF> 30000
3, the system function
1) data acquisition and processing
CDT way to run real-time information collected substation, including conventional RTU information and protection of information.
The information can be collected are:
a. analogue including frequency, voltage, current, active power, reactive power, and temperature.
b. state amount including switches, disconnectors, total accident protection signaling, transformer tap location.
c. pulse measurement.
d. sequence of events.
e. protection device transmits measured values ​​and fixed values.
f. protection fault movement information transmitted.
g. protective self-diagnostic information transmitted.
h. protection device transmits trip report, trip waveforms.
Real-time information
a. remote signal processing displacement
b. plausibility check
c. power handling
d. processing sequence of events
e. protection of information processing
2) calculate the amount of processing and special operations
The following standard calculations for the user to choose

a. based on active power, reactive power, voltage, current, three of a known quantity, find another unknown quantity, and power factor.
b. analog library, library statistics, the cumulative library Math calculations.
Generation of road handling: When the line on behalf of road maintenance bypass automatically bypass the value of active and reactive power, instead of the current equivalent of overhaul and sign on behalf of the line road surface.
Specified value statistics: early peak, evening peak, valley early and late valley, day maximum, minimum, etc. day.
Statistical main transformer tap calibration frequency, capacitor banks to invest time, switching frequency, input rate and peak time commitment.
3) Remote monitoring more limited measure
a. systems important for measurements and calculations performed more limited monitoring.
b. taken to prevent delay and dead run limit values ​​in the neighborhood and frequent alarms.
c. cumulative failure time and frequency, the pass rate for the calculation.
d. exception occurs, the alarm processing recovery.
4 alarm processing
a. alarms table
(Ⅰ) condition record sheet
(Ⅱ) telesignalling displacement record sheet
(Ⅲ) telesignalling abnormal record sheet
(Ⅳ) sequence of events recording sheet
(Ⅴ) protection fault motion recording sheet
(Ⅵ) to protect the self-diagnostic information recording sheet
b. defined alarm source
(Ⅰ) telesignalling status change
(Ⅱ) telemetry abnormal values
(Ⅲ) remote device status change
(Ⅳ) with total control unit communication failure
c. alarm selection
(Ⅰ) alarm line display
(Ⅱ) flash and timer automatically stops flashing display
(Ⅲ) Sound
(Ⅳ) automatically pushed Screen
(Ⅴ) Login conditions recorded and archived
(Ⅵ) Log telesignalling record form, and archiving
(Ⅶ) Login telemetry abnormal record form, and archiving
(Ⅷ) cause accidents Remembrance
5 accident recall, recall reproduction
M frames recorded before the accident, all the content and process of the N frames SCADA data content in the accident, M and N by the user to customize, whether you need this function the user can choose.
6 primitive editing functions
Has a wealth of primitive types, mainly to complete various types of screens to generate, modify.
7 graphics operation function
High-resolution full-screen graphical display, multi-window technology, the operation of each application, each application response message returned in response to the requirements of each application.
8 Reporting System
(Ⅰ) provides tabulation software for users to generate a variety of data reports.
(Ⅱ) regular print, call the print sheet.
Three. Background monitoring system context:
. 1 NGP-900 monitoring system project management:
Backup NGP-900 project file organization, NGP-900 Project Development Organization, NGP-900 project
NGP-900 line maintenance, NGP-900 engineering document reference
(2) real-time database with variable point definition:
General principles NGP-900 real-time database organization, loops and loops defined NGP-900 iss
NGP-900 point and variable point attribute variables explain, point NGP-900 variable definitions and references
Assignment attribute modification NGP-900 real-time database of commonly used techniques to define a variable point NGP-900, NGP-900 variable point
3 drawing tools and animation connections:
Overview NGP-900 window screen, NGP-900 screen graphic elements, NGP-900 screen organizational tool used
Animation connection NGP-900 iss, NGP-900 window controls, window mapping techniques commonly used
4 backstage language and system functions:
NGP-900 background that use of language, NGP-900 system function
. 5 NGP-900 network node configuration:
Classification NGP-900 network nodes constituting nodes NGP-900, the picture organization
Parameter configuration communications, NGP-900 network nodes NGP-900 network nodes, NGP-900 dual network fault tolerance
. 6 NGP-900 alarms and alarm handling:
NGP-900 alarm classification, NGP-900 process alarms, remote alarm and configuration changes, SOE alarm and configuration
Switching and alarm configuration, alarm acknowledgment, alarm push configuration screen
Audible alarm and its configuration, alarm limits management
. 7 NGP-900 remote control / remote adjustment operation and configuration:
General process of NGP-900 remote control / remote tone, NGP-900 remote lockout
Remote control / remote adjustment of local, remote control; remote control / remote adjustment interface and invoke methods
. 8 NGP-900 remote setting and value management:
Summon the value set NGP-900 model, fixed value, value database management, value management interface and invoke methods
9 broadcast of electric energy during freezing and NGP-900 treatment:
Electrical measure of NGP-900, said electrical energy conversion method, the acquisition process of electric energy, electric energy stored historical database
. 10 NGP-900 Remote Communication and signal processing reversion:
Expression method NGP-900 Remote Communication and soft assignment methods NGP-900 remote signaling point, NGP-900 accidents total signal and notice the total signal processing methods
Treatment of NGP-900 two-point throw the letter, NGP-900 signal reversion process
. 11 NGP-900 protocol drivers and their configuration:
NGP-900 data acquisition, data forwarding and simulation concepts relating to disk drives
Support the development of NGP-900 communication protocol and its configuration, NGP-900 communication protocol driver
. 12 NGP-900 timing control:
NGP-900 batch control
. 13 NGP-900 real-time database with real-time information visit:
NGP-900 real-time database, dump NGP-900 real-time database, NGP-900 real-time data table, view real-time telemetry data classification queries
Energy data classification live view, remote real-time query status browsing, real-time data trend curve Browse
XY graph data in real time browsing, data bar graph / pie chart real-time view
. 14 NGP-900 historical database with historical information visit:
Organization NGP-900 historical database, NGP-900 historical data tables, data query and browsing history, system operation records check
SOE query history telesignalling displacement query, switching query history, historical telemetry data query, other historical inquiry
History curve inquiry
. 15 NGP-900 file database and user database management:
Background language NGP-900 file database, NGP-900 user database with NGP-900 interface, access to the user database implementations
16 Report Functions:
NGP-900 system using the report function
17 NGP-900 management tools: the statute database management tool NGP-900 user management tools, templates, database management general approach
Loop template library management, standard window management methods and references
. 18 NGP-900 gallery and library management tools:
NGP-900 Device Library Management System Overview and features, to explain the use of NGP-900 Device Library Management System
Include: system menu; System Tools, view gallery methods; production methods Gallery
. 19 NGP-900 system tools for use:
Set the tool path, the system automatically log tools, database maintenance tools
. 20 NGP-900 controls explain the use of:
Specific use common controls, variable view controls, data source for the report controls
Other common controls; combo box, list box controls, form controls
21 Report Builder uses:
Specific methods using NGP-900 Report Builder.
Four. Monitoring system technical parameters
No. Name Data Remarks
1 DC Power Supply 85-265V rated working and export
2 145V DC control power tripping over normal -20%, +10%
3 Rated AC current 5A or 1A as required configuration
4 Maximum rated AC voltage 100V/57.7V phase 120V
5 Frequency 50HZ
6 DC Power consumption Normal <10W, tripping <15W low power consumption
7 alternating current power consumption <0.5VA / phase (In = 5A)
8 AC voltage Power consumption <0.5VA / phase
9 Working temperature -35 ~ +60 ℃
10 Altitude 4000 m or less
11 system availability> 99.95%
12 System MTBF> 380,000 hours
13 protection current, bus voltage error ≤ 0.3%
14 measuring current ≤ 0.2%
15 active and reactive power error ≤ 0.3%
Comprehensive error 16 telemetry <0.8%
17 Remote correct rate of 100%
18 frequency accuracy ± 0.01HZ
19 analog in the database update ≤ 1.0S
20 switch in the database update ≤ 1.0S
The sequence of events within the 21 stations (SOE) ≤ 2ms resolution
22 screen call response time ≤ 2S
The more remote area measuring 23 transfer time <2S