3.2.2.1 Mode of Dynamic record:
Dynamic record was divided into A, B, C and D section to record consecutively. The set starts to run automatically when disturbance happen to power network, it records as follow： A segment: data before disturbance, the record time can be set as 40ms to 500ms.
B segment: data after disturbance, the record time can be set as 100ms to 1000ms, the frequency can be set as 20/10/5/2kHz.
C segment: data after disturbance, the record time can be set as 1s to 20s, the frequency can be set as 1/0.5 kHz.
D segment: If concussion happen to the system, the record time can be set as 10 to 30 minutes, the sampling frequency can be set as 50/10/1Hz.
3.2.2 .2 Start Condition
The first start: Start automatically and run sequentially as A-B-C segment when any start condition is satisfied.
Repeat start: run repeatedly when new start conditions appears. Halt automatically when recording finishes.
3.3 Rated Parameters:
AC voltage: Un=57.7V, 100V; 2*Un: Long time running; AC current: In=5A, 1A; 2*In: Long time running;
Lasting 10s when 20 times overload; Lasting 1s when 40 times overload;
High frequency signal:-10V～+10V, -5V～+5V;
Non-electric parameters: sensor output such as temperature, pressure and so on; Digital：Normally open, normally closed passive dead contact.
3.4 Power Source:
AC: 220V, accepted deviation: -20%~+10%;
Frequency: 50Hz ± 0.5Hz, accepted deviation: -5%~+5%; DC: 220V or 110V, accepted deviation: -20%~+10%
3.5 Start Mode:
It includes analog start, digital start and manual start mode.
3.5.1 Analog Start
1) Positive-sequence component start: It includes positive-sequence over-voltage start and low-voltage start
2) Negative-sequence component start: It includes negative-sequence voltage start and current start.
3) Zero-sequence component start: It includes zero-sequence voltage components start and zero-sequence current component start.
4) Oscillation start: It starts while the current fluctuates for 10% in 1.5s.
5) Frequency difference start and frequency change rate start: It monitor that the frequency bias normal range or not.
6) Stator winding earth-fault start: Fundamental wave zero-sequence voltage over limit start; The terminal third harmonic voltage start; The third harmonic voltage (between the terminal and the neutral) start rate.
7) Low-frequency over-current start: Set against the short fault of the units start processing. 8) Over-excitation start: Monitor the over-excitation of the generator-transformer unit.
9) Generator excitation-loss, low-excitation start: Voltage among rotor poles under amount start; Reactive power reverse start.
10) Reverse-power start: Start reverse-power criterion through judging the direction of active power from generator terminal.
11) Rotor winding earth-fault start: It includes rotor positive voltage to ground, negative voltage to ground and voltage between positive pole and negative pole.
12) Stator and rotor winding overload start: Take the current of generator terminal and DC excitation current of rotor winding as start mount to judge the fault.
13) Other starts: Any input analog can be used as start mount, the start mode includes abruption component start and over or under limit start.
3.5.2 Digital Start
Any one or multiplex digital value can be set as start value. The mode includes switch-on start and switch-off start.
3.5.3 Manual Start 3.6 Warning Signal
It includes power down warning signal, record start signal, error-warning signal. The signal output while providing relay connection, which can be connected to center signal circuit.
3.7 The set has perfect function of data analyzing, error distance-measurement adopts multiple
algorithms to calculate synthetically and reach high precision of 2 percent error of metallic earth.
3.8 Realizing many timing modes including GPS module timing, impulse timing, serial port
timing. Sampling synchronously all the net is realized through GPS satellite synchronous clocking, while record data with absolute time standard made the remote dynamic recorder realized data analyze synchronously.
3.9 Communication
The set provides Ethernet port with standard TCP/IP protocol and adopt IEC 870-5-103 communicate protocol. The recorder can share data when connected to local MIS net and realize remote control through connecting Ethernet card to MIS net. It completes the function of data transfer, remote display, setting modification, manual start.
3.10 Work Environment
Temperature: -5°C～+45°C Relative humidity: ≤90 %
3.11 Size
Standard PK-10 cupboard: 2260/2360(Height) mm × 800(Width) mm × 600(Depth) mm. It can be made for special.
4. Hardware Illustration
The set adopts 6U cabinet design and has perfect ability to protect the set from disturbance. It is convenience to install, maintain and debug. The board distribute from the left to the right as: X1 to X6: analog input board；X7: main board; X8: digital input board; X9: power board.
4.1 The Upper Layer Board
It includes Indicator lights of power, run, start and error.
Power indicator light：It is on when the power source works well.
Run indicator light: It flashes when units work well. When there is something wrong, it will always be on or off.
Start indicator light：It is on when units begin to record.
Error indicator light：When something wrong occurs in the units, it is on.
4.2 Analog Input Board:
It can accomplish data-collection and calculation of 12 analog channels and transient record start discrimination with 32-bit high-speed DSP and 16-bit A/D chip. To meet the demand of kinds of measure scale through regulating the secondary side of the isolated transformer, AC analog take high precision isolated transformer as transform device.
4.3 Main Board
It is composed with ETX industrial computer as the core. It completes the task of monitoring management, saving the settings, storage and transfer of record data. It controls all boards and transfer data through the bus.
4.4 Digital Input Board
The use of 32 bit high-speed DSP made it capable to accomplish data-collection of 128 digital channels and digital start discrimination of transient record. To eliminate Common Mode Interference caused by power and common ground wire, the internal bus thought optical isolator is isolated from input circuit absolutely.
4.5 Power Board
There are 5V, ±12V, 24V for the inside and start signal relay, error alarming relay, signal reset relay on the board.
5. Recorder Monitor Software Illustrations
The software mainly completes the task of running and adjusting management, setting value’s
adjustment, recording data’s storage and printing. Supply power to the set, it will start system, and go into the main interface of the software automatically.
5.1 Main Interface
The running state of the set displayed on the page header. The recent 1000 data recording
information list in the page. The information include data file name, start type, starting channel number and size of the file. Double clicking the item in the list box will open the analysis software automatically where you can analyze the data file.
5.2 Integrated Settings
There are communication parameters, password and exit submenu in this menu. 5.2.1 Communication Parameters
The default local IP address is 10.0.4.1; the communication parameters include port and IP
address. You can communicate one or two sets through setting the port and IP address. Default port is 2404; Default IP address of set is 10.0.4.11(the other is 10.0.4.12).
5.2.2 Password
Set or change the operating password. 5.2.3 Exit
After verifying the password, exit the program. 5. 3 1# settings (or 2# settings)
There are manual start, run settings, system settings, channel attributes, RMS, digital state,
proportion factor, digital output debug, analog zeroing, manual set time, printer select, print font select, analog settings print and digital settings print.
5.3.1 Manual Start
Pressing the submenu, the sets will start record man-made and create data files. 5. 3.2 Run Settings
The settings include over or under of analog, rate of change of analog, digital, sequence
component and other, etc. If the value you set is 0, it will quit this start mode. Change the settings value through input by keyboard. Pressing the OK button or ENETER key, confirm the change and exit. Pressing CANCEL button, the value is invalid.
5. 3.2.1 Over/Under and Abruption Settings
Set the settings of the analog channels. For the over/under settings, upper limit settings must be
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