CN2657011Y - Intelligent online stability measurement and control device for power angle of synchronous generator - Google Patents
Intelligent online stability measurement and control device for power angle of synchronous generatorInfo
- Publication number
- CN2657011Y CN2657011Y CN 200320109742 CN200320109742U CN2657011Y CN 2657011 Y CN2657011 Y CN 2657011Y CN 200320109742 CN200320109742 CN 200320109742 CN 200320109742 U CN200320109742 U CN 200320109742U CN 2657011 Y CN2657011 Y CN 2657011Y
- Authority
- CN
- China
- Prior art keywords
- synchronous generator
- power angle
- control device
- electrically connected
- intelligent online
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 46
- 238000005259 measurement Methods 0.000 title abstract description 9
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 description 14
- 238000010168 coupling process Methods 0.000 description 14
- 238000005859 coupling reaction Methods 0.000 description 14
- 230000005622 photoelectricity Effects 0.000 description 14
- 241000283070 Equus zebra Species 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model relates to a synchronous generator power angle measurement and control device in electromechanical combination measurement and control field. In particular to a simple and effective intelligent online stability measurement and control device for the power angle of a synchronous generator in a grid-connected operation state of the synchronous generator, which is characterized in that: the reflection type infrared sensor (1), the synchronous generator output end voltage zero-crossing sampling part (2), the I/O and communication interface part (4), the calendar clock part (5) and the display keyboard man-machine conversation part (6) are respectively and electrically connected with the data processing and storing part (3). The intelligent online stability measurement and control device for the power angle of the synchronous generator can reliably, accurately and online measure the power angle of the synchronous generator after grid-connected operation in real time.
Description
Affiliated technical field: the utility model relates to a kind of dynamo-electric in conjunction with the synchronous generator power angle measure and control device of measuring the control field.Particularly a kind of a kind of simple and effective synchronous generator power angle intelligent online that is incorporated into the power networks under the state about synchronous generator is stablized measure and control device.
Background technology: the power angle δ of synchronous generator is after the sign synchronous generator is incorporated into the power networks, as shown in Figure 4, and its induced potential vector
With the line voltage vector
Between angle, be one of important parameter of synchronous generator stable operation.Synchronous generator is ignored under the situation of generator own loss when no-load running, can think the induced potential of synchronous generator
Just equal its output end voltage
Power angle δ is zero; After synchronous generator is incorporated into the power networks, owing to the influence of electric power network parameter, payload, character etc., its induced potential
With its terminal voltage (also being line voltage)
Between, not only quantitatively but also on phase relation also to change, promptly power angle δ no longer is zero.There is not simple effective method for a long time, the power angle after can the on-line measurement synchronous generator is incorporated into the power networks really reliably, accurately, in real time.
Summary of the invention: the purpose of this utility model provides a kind of synchronous generator power angle intelligent online and stablizes measure and control device, its power angle after can the on-line measurement synchronous generator is incorporated into the power networks reliably, accurately, in real time.
The technical solution of the utility model is: design a kind of synchronous generator power angle intelligent online and stablize measure and control device, it is characterized in that: reflection infrared sensor 1, synchronous generator output end voltage zero passage sampling part 2, I/O and communication interface part 4, calendar clock part 5 and display keyboard man-machine conversation part 6 are electrically connected with data processing and storage area 3 respectively.
Bar code is corresponding at interval with synchronous generator armature electrode black and white by the infrared emission part for described reflection infrared sensor; Infrared remote receiver is electrically connected with amplifier comparator different name end; The end of the same name of amplifier comparator is electrically connected with threshold voltage circuit.
Described synchronous generator output end voltage zero passage sampling portion is electrically connected with comparer by voltage transformer (VT), and comparer is electrically connected with photoelectrical coupler.
Characteristics of the present utility model are: as shown in Figure 4, because that reflective infrared sensing portion produces is corresponding with the power generator electrode logarithm, the square-wave pulse e that represents its induced potential, the zero crossing of induced potential is represented on the jumping edge it on; Synchronous generator output end voltage zero passage is extracted part synchronous generator output end voltage u is produced square wave u after taking a sample, being crossed zero balancing
1, jump on it along the zero crossing of representing output end voltage u; Data processing and storage area when detect e go up to jump along the time, read and write down θ
1Value, when detecting u
LGo up to jump along the time, read θ
2Value, θ
2-θ
1Be exactly the power angle δ of synchronous generator
XBefore synchronous generator was not incorporated into the power networks, the power angle that records was the internal power angle, is designated as δ
0, after synchronous generator is incorporated into the power networks, the power angle δ that records
X-δ
0Promptly obtain the realtime power angle δ of synchronous generator; Through A/D conversion output two-way 4-20ma simulating signal, send system stability device and fault recording system with this power angle, write down the realtime power angle when adjusting the synchronous generator steady-working state and breaking down, be convenient to analyze the stability margin of reason and generating; The time mark that resolution is centisecond is stamped at the realtime power angle, sent electric power dispatching system, be convenient to the stability margin of each synchronous generator of real-time analysis multi-source electric system through communication interface; Adopt advanced infrared electronic technology sampling, microcomputer data is handled, the power angle after the on-line measurement synchronous generator is incorporated into the power networks reliably, accurately, in real time.
Below in conjunction with the embodiment accompanying drawing the utility model is described further.
Description of drawings: Fig. 1 is an embodiment measure and control device theory diagram;
Fig. 2 is the reflective infrared sensing partial circuit of an embodiment schematic diagram;
Fig. 3 is embodiment terminal voltage zero passage sampling part circuit theory diagrams.
Fig. 4 is the work wave synoptic diagram.
Among Fig. 1: 1, reflective infrared sensing part; 2, terminal voltage zero passage sampling part; 3, data processing and storage area are with general microprocessor MCU or DSP and EEPROM processing and storage data; 4, I/O and communication interface part, with output of I/O mouth and the input signal of MCU or DSP, communication interface is finished data communications task with common RS-232C and RS-485; 5, calendar clock part with the M81T81 calendar clock chip of texas,U.S instrument company production, and is subjected to the GPS calibration to finish the generation of standard time clock; 6, demonstration, keyboard man-machine conversation part show with the LED charactron to show the real-time power-angle and power value.
Among Fig. 2: R1, R2, R3, R4, R5, R6, R7, R8, R9 are resistance; D1 is an infrared transmitter; D2 is a light emitting diode; Q1 is infrared photosensitive triode, makes infrared remote receiver; Q2 is a triode; N1 is a comparison amplifier; N2 is photoelectricity coupling and device; WY is a three terminal regulator; B is the zebra bar; CZ is an accessory power outlet.
Among Fig. 3: S1, S2 are voltage input ends; C1, C2, C3 are electric capacity; L1, L2 are inductance; T1 is a mutual inductor; R10, R11, R12, R13, R14, R15, R16 are resistance; N3 is a comparison amplifier; N4 is photoelectricity coupling and device;
Embodiment:
Fig. 1 is the measure and control device theory diagram, as shown in the figure, reflective infrared sensing part is made up of black and white zebra bar 1, infrared transmitter 2, infrared remote receiver 3, amplifier comparator 4, photoelectrical coupler 5 etc., and reflective infrared sensing portion 1, synchronous generator output end voltage zero passage sampling portion 2, I/O and communication interface part 4, calendar clock part 5 and display keyboard man-machine conversation part 6 are electrically connected with data processing and storage area 3 respectively.
Fig. 2 is reflective infrared sensing partial circuit schematic diagram; As shown in the figure, black and white zebra bar B characterizes the number of pole-pairs of synchronous generator with informal voucher, when the number of pole-pairs of synchronous generator is P, with generator shaft section periphery blacking, P five equilibrium then, make an informal voucher in each mean line position, the informal voucher reference position should be accurate, and the requirement of width length is not tight, and general width is 50-150mm, length is 80-200mm, presses the actual conditions of generator shaft and decides; Infrared transmitter D1 puts in the heavy straight plane of black and white zebra bar B, apart from synchronous generator arbor surface 40-120mm, infrared transmitter D1 is the infrared beam of λ to black and white zebra bar B emission wavelength, and when this light beam runs into the black part timesharing of black and white zebra bar B, major part is absorbed and seldom produces reflection; When running into white portion, then major part is reflected and seldom is absorbed; Infrared remote receiver Q1 puts in the heavy straight plane of black and white zebra bar B, and apart from synchronous generator arbor surface 40-120mm, infrared remote receiver Q1 is with the infrared signal conversion current signal of receiving, and its reception infrared light what the size of its output current is proportional to; This current signal is got its collector voltage send comparison amplifier N1 through R4 different name end after Q2 amplifies, on comparison amplifier N1 of the same name, set accurate, stable threshold voltage by R5, R6, its effect is the filtering clutter interference on the one hand, could guarantee to characterize the square wave front edge good reproducibility of induced potential zero crossing on the other hand, thus the precision of guaranteed output angular measurement; The square-wave signal that photoelectrical coupler N2 partly exports comparison amplifier N1 send the data processing section of device after photoelectricity is isolated, adopt this photoelectric coupling technology measure, prevents the phase mutual interference on the one hand, finishes level match on the other hand; Infrared remote receiver Q1 grounded emitter, the Q1 collector connects the base stage of triode Q2, Q2 grounded collector, R2 connects between Q1 collector and the Q2 emitter, while and R3, the end of R4 connects, the other end of R4 is connected with comparison amplifier N1 negative input end, the other end of R3 and R5, be connected with 3 pin of three terminal regulator WY, the other end of R5 is connected with comparison amplifier N1 positive input terminal with R6, the other end ground connection of R6, the output terminal of comparison amplifier N1 is connected with the negative terminal of light emitting diode D2 and 2 pin of photoelectricity coupling and device N2, the anode of light emitting diode D2 is connected with the end of R7,2 pin of the other end of R7 and three terminal regulator WY, R1, the end of R8,1 pin of accessory power outlet CZ,-24v power supply connects, the other end of R1 is connected with the anode of infrared transmitter D1, the negativing ending grounding of infrared transmitter D1, the 1 pin ground connection of three terminal regulator WY, the other end of R8 is connected with 1 pin of photoelectricity coupling and device N2,5 pin of photoelectricity coupling and device N2 connect the end of R9, the other end ground connection of R9,3 pin of photoelectricity coupling and device N2 connect 2 pin of accessory power outlet CZ, 4 pin of photoelectricity coupling and device N2 connect 3 pin of accessory power outlet CZ, the 4 pin ground connection of accessory power outlet CZ.
Fig. 3 is terminal voltage zero passage sampling part circuit theory diagrams, as shown in the figure, synchronous generator output end voltage zero passage sampling part, by voltage transformer (VT) T1, comparison amplifier N3, compositions such as photoelectrical coupler N4, its course of work is as follows: the voltage of synchronous generator output terminal, be connected to S1 through the bus sample circuit, S2, through capacitor C 1, C2, C3 inductance L 1, the wave filter that L2 forms is added to the elementary of T1, its secondary voltage adds to comparison amplifier N3, carries out zero passage detection by comparison amplifier N3 and produces square wave, and this square wave is delivered to data processing and storage area 3 through photoelectricity coupling and device N4; Voltage input end S1 and capacitor C 1, inductance L 1 connects, the other end of inductance L 1 and capacitor C 3, mutual inductor T1 input end connects, voltage input end S2 and capacitor C 2, inductance L 2 connects, the other end of inductance L 2 and capacitor C 3, mutual inductor T1 input end connects, the other end of capacitor C 1 is connected with the other end of capacitor C 2 and ground connection, mutual inductor T1 output terminal and resistance R 10, the end of R11 connects, the end of the other end of R10 and R12, the positive input terminal of comparer N3 connects, the end of the other end of R11 and R13, the negative input end of comparer N3 connects, R12, the other end of R13 connects and ground connection, the output terminal of comparer N3 is connected with 2 pin of photoelectricity coupling and device N4,1 pin of photoelectricity coupling and device N4 is connected with the end of R14, the other end of R14 is connected with-24v, 5 pin of photoelectricity coupling and device N4 are connected with the end of R15, the other end ground connection of R15, the 4 pin ground connection of photoelectricity coupling and device N4, the end of R16 is connected with 3 pin of photoelectricity coupling and device N4, and being connected to the input end of data processing section 3, the other end of R16 is connected with-5v.
Claims (3)
1, synchronous generator power angle intelligent online is stablized measure and control device, it is characterized in that: reflection infrared sensor (1), synchronous generator output end voltage zero passage sampling part (2), I/O and communication interface part (4), calendar clock part (5) and display keyboard man-machine conversation part (6) are electrically connected with data processing and storage area (3) respectively.
2, synchronous generator power angle intelligent online according to claim 1 is stablized measure and control device, it is characterized in that: bar code is corresponding at interval with synchronous generator armature electrode black and white by the infrared emission part for described reflection infrared sensor; Infrared remote receiver is electrically connected with amplifier comparator different name end; The end of the same name of amplifier comparator is electrically connected with threshold voltage circuit.
3, synchronous generator power angle intelligent online according to claim 1 is stablized measure and control device, it is characterized in that: described synchronous generator output end voltage zero passage sampling portion is electrically connected with comparer by voltage transformer (VT), and comparer is electrically connected with photoelectrical coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109742 CN2657011Y (en) | 2003-11-10 | 2003-11-10 | Intelligent online stability measurement and control device for power angle of synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109742 CN2657011Y (en) | 2003-11-10 | 2003-11-10 | Intelligent online stability measurement and control device for power angle of synchronous generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2657011Y true CN2657011Y (en) | 2004-11-17 |
Family
ID=34343376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320109742 Expired - Fee Related CN2657011Y (en) | 2003-11-10 | 2003-11-10 | Intelligent online stability measurement and control device for power angle of synchronous generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2657011Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928778A (en) * | 2012-10-23 | 2013-02-13 | 中广核工程有限公司 | Starting comprehensive characteristic testing system of three-phase motor of nuclear power station |
| CN106383312A (en) * | 2016-12-01 | 2017-02-08 | 北京简佑科技有限公司 | Motor state detection circuit and motor state display device |
-
2003
- 2003-11-10 CN CN 200320109742 patent/CN2657011Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928778A (en) * | 2012-10-23 | 2013-02-13 | 中广核工程有限公司 | Starting comprehensive characteristic testing system of three-phase motor of nuclear power station |
| CN102928778B (en) * | 2012-10-23 | 2015-08-05 | 中广核工程有限公司 | A kind of three-phase motor of nuclear power station starts overall characteristic test system |
| CN106383312A (en) * | 2016-12-01 | 2017-02-08 | 北京简佑科技有限公司 | Motor state detection circuit and motor state display device |
| CN106383312B (en) * | 2016-12-01 | 2023-06-27 | 北京简佑科技有限公司 | Motor state detection circuit and motor state display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100546143C (en) | A kind of low current grounding detects the device and method with the location | |
| CN101398405B (en) | Water electric conductivity intelligent sensor | |
| CA1166315A (en) | Electronic kilowatt-hour meter for measuring electrical energy comsumption | |
| CN201352235Y (en) | Three-phase multifunctional electric energy meter | |
| CN107677982A (en) | A kind of digitalized electrical energy meter on-site calibrating method and device | |
| CN104808168A (en) | Rapid electric energy meter verification method based on segmented current technology | |
| CN105911499A (en) | Ultrasonically local discharging metering system under onsite environment and method | |
| CN104569902A (en) | Digital type electric energy meter power consumption measuring device and method | |
| CN112255584A (en) | Remote online calibration method for intelligent electric energy meter | |
| CN110187193B (en) | Dielectric loss monitoring system and method based on total-station voltage transformer stability judgment | |
| CN204855786U (en) | From measurement formula ammeter accuracy testing check table | |
| CN109581272A (en) | A kind of direct current energy meter detection system | |
| CN103176066A (en) | Digitization power quality monitoring device | |
| CN2657011Y (en) | Intelligent online stability measurement and control device for power angle of synchronous generator | |
| CN201859177U (en) | Measurement module for low-frequency alternating current signal in relay protection device | |
| CN108761159B (en) | Metering device detection system based on wide-area synchronous measurement electric energy meter | |
| CN102393497A (en) | Portable polarity calibrator for electronic mutual inductor | |
| CN107270950B (en) | A kind of embedded segmentation scanning fiber bragg grating sensing demodulating system and method | |
| CN102608423B (en) | Detection method of harmonic energy | |
| CN106230905B (en) | Method based on intelligent terminal copy reading electric energy metering device parameter | |
| CN107479020A (en) | Single-phase measurement Fault Identification device and processing method | |
| CN215005567U (en) | Broadband carrier module with electricity stealing prevention detection function | |
| CN2091462U (en) | Portable harmonic wave analyzer | |
| CN204128572U (en) | A kind of inductance induction type data collector | |
| CN204789956U (en) | Special LED intelligence light detection device of smart electric meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |