CN203773026U - Primary frequency modulation testing apparatus of hydroelectric generating set - Google Patents
Primary frequency modulation testing apparatus of hydroelectric generating set Download PDFInfo
- Publication number
- CN203773026U CN203773026U CN201320837434.8U CN201320837434U CN203773026U CN 203773026 U CN203773026 U CN 203773026U CN 201320837434 U CN201320837434 U CN 201320837434U CN 203773026 U CN203773026 U CN 203773026U
- Authority
- CN
- China
- Prior art keywords
- frequency modulation
- frequency
- primary frequency
- input
- frequency signal
- 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
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model relates to the field of hydroelectric generating set control and electric power system frequency modulation, specifically to a primary frequency modulation testing apparatus of a hydroelectric generating set. The primary frequency modulation testing apparatus comprises an electrical network frequency signal input module, an input frequency signal processing module, a control chip and an output signal amplification module which are connected in order. Hence, the primary frequency modulation testing apparatus provided by the utility model has the advantages that, 1. the primary frequency modulation testing apparatus of the hydroelectric generating set tracks the frequency of the electrical network in real time; 2.the size and the direction of a disturbance frequency signal can be set flexibly and conveniently; and 3. the difference between the frequency input to a speed controller and the frequency of the electrical network during the experimental process changes according to the predefined form, and cannot be affected by fluctuation of the electrical network frequency, thus authenticity and accuracy of the primary frequency modulation testing is ensured, and the testing result can really reflect the response characteristic of the primary frequency modulation of the hydroelectric generating set.
Description
Technical field
The utility model relates to Hydropower Unit control and power system frequency regulates field, is specially a kind of hydroelectric units primary frequency modulation test unit.
Background technology
In modern power systems, the relation of active power and mains frequency is extremely close, the object of electric system active power control be for: maintain mains frequency in allowed band; Improve the economy of Operation of Electric Systems; Ensure the coordinated operation of pool, each regional power system, by controlling the active power of each genset in one's respective area, makes the electric power and the electric weight that between zones of different, exchange be undertaken by the agreement of prior agreement.So the primary frequency function of genset is most important to maintaining stablizing of mains frequency, particularly particularly crucial for the little electrical network of quick adjustment unit proportion.Some accidents that occur from electric system can find out that primary frequency function input and primary frequency modulation parameter arrange the expansion of correct unit inhibition accident preferably in the time that electrical network has an accident, and ensure the stability of electric system.So to electric system active power, control has very important effect in primary frequency modulation test, but existing hydroelectric units primary frequency modulation test unit is difficult to detect truly hydroelectric units primary frequency modulation characteristic.
When current primary frequency modulation test, all adopt fixed frequency to add the frequency source of step disturbance as primary frequency modulation, the prerequisite of this mode is for having supposed that electrical network is Infinite bus system, and mains frequency is constant.But primary frequency modulation its essence is that working as mains frequency changes, the power adjustments characteristic of genset and the impact on mains frequency.The object of carrying out primary frequency modulation test is the dynamic and stalic state control characteristic in order to detect a constant frequency of frequency and mains frequency existence when input speed regulator unit and regulating system when poor.Due in process of the test, mains frequency change, input speed regulator frequency can not be just fixed value.And answer the actual change of Tracking Frequency of Power Grids, and ensure that the frequency of inputting speed regulator in process of the test is all the time than the high or low a certain concrete value of mains frequency, the correctness of guarantee test result.For this reason, developed specially a kind of new hydroelectric units primary frequency modulation Special testing device.
Utility model content
The utility model is mainly to solve the existing technical matters of prior art; Provide a kind of new for DSP(digital signal processor, i.e. digital signal processor) hydroelectric units primary frequency modulation test unit.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals:
A kind of hydroelectric units primary frequency modulation test unit, is characterized in that, comprises mains frequency signal input module, input frequency signal processing module, control chip and output signal amplification module; Wherein, mains frequency signal input module, input frequency signal processing module, control chip are connected successively with output signal amplification module.
At above-mentioned a kind of hydroelectric units primary frequency modulation test unit, described mains frequency signal input module comprises an isolating transformer.
At above-mentioned a kind of hydroelectric units primary frequency modulation test unit, described input frequency signal processing module comprises wave filter and operational amplifier; The model of operational amplifier is TL031P; Described wave filter comprises the resistance capacity filter that resistance R 1, resistance R 2, capacitor C 1 form.
At above-mentioned a kind of hydroelectric units primary frequency modulation test unit, described control chip adopts dsp chip, and model is TMS320F2812.
At above-mentioned a kind of hydroelectric units primary frequency modulation test unit, described output signal amplification module comprises optocoupler and triode group composition.
Therefore, the utlity model has following advantage: 1, hydroelectric units primary frequency modulation device real-time follow-up mains frequency; 2, the size of forcing frequency signal, direction can arrange flexibly and easily; 3, guarantee to input the frequency of speed regulator in process of the test and the difference of mains frequency is by the variation of predetermining, be not subject to the impact of mains frequency fluctuation, the authenticity and the accuracy that have ensured primary frequency modulation test, its test findings can truly reflect hydroelectric units primary frequency modulation response characteristic.
Brief description of the drawings
Fig. 1 is system principle structured flowchart of the present utility model.
Fig. 2 is specific embodiment of the utility model circuit structure schematic diagram.
Fig. 3 is the circuit diagram of the utility model input frequency signal processing module.
Fig. 4 is the circuit diagram of the utility model output signal amplification module.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In figure, mains frequency signal input module 1, input frequency signal processing module 2, control chip 3, output signal amplification module 4.
Embodiment:
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of new hydroelectric units primary frequency modulation test unit is provided, and has provided the processor based on DSP(digital signal, i.e. digital signal processor) embodiment.
The utility model comprises mains frequency signal input module, input frequency signal processing module, control chip and output signal amplification module; Wherein, mains frequency signal input module, input frequency signal processing module, control chip are connected successively with output signal amplification module.
Wherein, mains frequency signal input module comprises an isolating transformer; Input frequency signal processing module comprises wave filter and operational amplifier; The model of operational amplifier is TL031P; Described wave filter comprises the resistance capacity filter that resistance R 1, resistance R 2, capacitor C 1 form; Control chip adopts dsp chip, and model is TMS320F2812; Output signal amplification module comprises optocoupler and triode group composition.
Hydroelectric units primary frequency modulation test unit, each module act as: mains frequency signal input module 1 accepts to introduce from the ac voltage signal of grid side mutual induction of voltage the mains frequency signal input circuit of this device, and isolates; Input frequency signal processing module 2 will obtain voltage signal and carry out filtering and Shape correction, obtain square-wave signal and send into grid frequency measurement module 3;
Control chip 3 specifically has following effect:
1. pair mains voltage signal is carried out frequency measurement;
2. provide disturbance quantity and perturbation direction signal according to testing requirements;
3. pair two input signals superpose;
4. the signal of pair input is processed, output PWM square-wave signal;
Output signal amplification module 4 amplifies the square-wave signal obtaining, and gives Hydropower Unit arrangements for speed regulation as the signal source of primary frequency modulation.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as mains frequency signal input module 1, input frequency signal processing module 2, control chip 3, output signal amplification module 4 herein, do not got rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (1)
1. a hydroelectric units primary frequency modulation test unit, is characterized in that, comprises mains frequency signal input module, input frequency signal processing module, control chip and output signal amplification module; Wherein, mains frequency signal input module, input frequency signal processing module, control chip are connected successively with output signal amplification module;
Described mains frequency signal input module comprises an isolating transformer; Described input frequency signal processing module comprises wave filter and operational amplifier; The model of operational amplifier is TL031P; Described wave filter comprises the resistance capacity filter that resistance R 1, resistance R 2, capacitor C 1 form; Described control chip adopts dsp chip, and model is TMS320F2812; Described output signal amplification module comprises optocoupler and triode group composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320837434.8U CN203773026U (en) | 2013-12-18 | 2013-12-18 | Primary frequency modulation testing apparatus of hydroelectric generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320837434.8U CN203773026U (en) | 2013-12-18 | 2013-12-18 | Primary frequency modulation testing apparatus of hydroelectric generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203773026U true CN203773026U (en) | 2014-08-13 |
Family
ID=51290203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320837434.8U Expired - Fee Related CN203773026U (en) | 2013-12-18 | 2013-12-18 | Primary frequency modulation testing apparatus of hydroelectric generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203773026U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561437A (en) * | 2016-06-30 | 2018-01-09 | 中国电力科学研究院 | A kind of Wind turbines primary frequency modulation method of testing |
| CN111896833A (en) * | 2020-08-05 | 2020-11-06 | 贵州电网有限责任公司 | Offline real-time dynamic frequency response test method |
| CN111896806A (en) * | 2020-08-05 | 2020-11-06 | 贵州电网有限责任公司 | Frequency response test system and test method |
| CN111896805A (en) * | 2020-08-05 | 2020-11-06 | 贵州电网有限责任公司 | Frequency response test signal output device and method for continuous signal output |
-
2013
- 2013-12-18 CN CN201320837434.8U patent/CN203773026U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561437A (en) * | 2016-06-30 | 2018-01-09 | 中国电力科学研究院 | A kind of Wind turbines primary frequency modulation method of testing |
| CN107561437B (en) * | 2016-06-30 | 2021-09-03 | 中国电力科学研究院有限公司 | Primary frequency modulation testing method for wind turbine generator |
| CN111896833A (en) * | 2020-08-05 | 2020-11-06 | 贵州电网有限责任公司 | Offline real-time dynamic frequency response test method |
| CN111896806A (en) * | 2020-08-05 | 2020-11-06 | 贵州电网有限责任公司 | Frequency response test system and test method |
| CN111896805A (en) * | 2020-08-05 | 2020-11-06 | 贵州电网有限责任公司 | Frequency response test signal output device and method for continuous signal output |
| CN111896805B (en) * | 2020-08-05 | 2023-10-27 | 贵州电网有限责任公司 | Frequency response test signal output device and method for continuous signal output |
| CN111896806B (en) * | 2020-08-05 | 2023-10-27 | 贵州电网有限责任公司 | Frequency response test system and test method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103163373B (en) | Be applicable to the computing method of the harmonic pollution responsibility of power quality data Interchange Format | |
| CN106950512B (en) | Energy storage converter grid-connected and grid-disconnected characteristic integrated detection system and method | |
| CN103207335B (en) | Island detection method based on phase-frequency positive feedback | |
| CN103018612B (en) | A kind of full-function electric-energy quality comprehensive test platform | |
| CN203773026U (en) | Primary frequency modulation testing apparatus of hydroelectric generating set | |
| CN106998147B (en) | Energy-saving multifunctional simulated electricity load device and control method thereof | |
| CN103944172A (en) | Photovoltaic power station reactive voltage control method | |
| CN204258655U (en) | A kind of control device maintaining T-shaped three-level photovoltaic inverter bus neutral point voltage balance | |
| CN104079193A (en) | Device for direct current component adjustment and control method thereof | |
| CN104104251B (en) | A kind of robust control method of the combining inverter based on SSR-KDF | |
| CN103825480A (en) | Digital single-cycle control method for multiplexed-output magnetic bearing switch power amplifier | |
| CN105634025A (en) | Grid-connected inversion device in direct current microgrid | |
| CN103872690A (en) | Method for controlling dynamic voltage restorer based on HHT detection method and PFC | |
| Libin et al. | A new theory of reactive power control of grid connected PV inverter | |
| CN202948088U (en) | Novel comprehensive test system of electric energy quality of electrification railway | |
| CN104852388A (en) | Chain SVG device with active filter function | |
| CN107658902B (en) | Photovoltaic grid-connected inverter with power quality monitoring function | |
| CN104764958A (en) | Testing system of power quality control equipment | |
| CN104022509A (en) | Multifunctional electric energy quality regulator for quickly and accurately detecting instruction signals | |
| CN103606965A (en) | Networking control method of energy storage inverters based on quasi real-time synchronous signals | |
| CN203340031U (en) | Power frequency inductance regulation resonance device | |
| CN204613263U (en) | Based on the current disturbing generator of accurate ratio resonance frequency dividing control | |
| CN204030595U (en) | Real-time tracking harmonic compensation circuit based on waveform sampling | |
| CN207947608U (en) | A kind of voltage compensating device | |
| CN105116794A (en) | Method for controlling power grid simulator suitable for accessing of medium- and small-capacity distributed power supplies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20141218 |
|
| EXPY | Termination of patent right or utility model |