CN105450114A - Generator filtering control method - Google Patents
Generator filtering control method Download PDFInfo
- Publication number
- CN105450114A CN105450114A CN201511002232.1A CN201511002232A CN105450114A CN 105450114 A CN105450114 A CN 105450114A CN 201511002232 A CN201511002232 A CN 201511002232A CN 105450114 A CN105450114 A CN 105450114A
- Authority
- CN
- China
- Prior art keywords
- generator
- voltage
- filtering
- filter
- electric current
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a generator filtering control method, and belongs to the technical field of generator filtering control equipment. According to the technical scheme, the method comprises the following steps: adopting closed-loop control, comparing a voltage signal of a generator bus bar with a system reference value to obtain a control error, and calculating a harmonic content of the generator bus bar at the moment and a required compensation capacity; performing a calculation through a single-chip microcomputer of a main controller to obtain a real-time control signal; and controlling a tapping position of a vacuum on-load tap switch in a capacity conversion device in order that a filtering device absorbs harmonic waves on the generator bus bar with a most suitable capacity, thereby fulfilling the aim of filtering the harmonic waves on the generator bus bar and making a voltage waveform of the generator bus bar meet a standard requirement. Through adoption of the generator filtering control method, the characteristics of high speed and high stability of the single-chip microcomputer are brought into full play. In conjunction with the filtering capacity conversion device, the filtering capacity can be continuously adjusted in real time; the voltage waveform of the generator bus bar is kept stable and meets the standard requirement; and the device is stable and reliable, and has high adaptability.
Description
Technical field
The present invention relates to a kind of generator filtering control method, belong to No-load Test of Transformer technical field.
Background technology
In Transformer Plant Test, only require the no-load test of carrying out 100% rated voltage according to standard in the past, requirement is not done for the no-load test under more high voltage.And in the GB109.1 newly promulgated, explicitly call for the no-load loss will carried out under 90% and 110% voltage to measure.When the testing generator of a lot of transformer company does no-load test under 100% rated voltage, the harmonic content of busbar voltage meets the requirements, and time under 110% rated voltage, the harmonic content of busbar voltage significantly increases, and cannot meet standard-required.For high-power transformer product, this phenomenon is more obvious, and portioned product harmonic content is even more than 20%, and be seriously above standard requirement.
Analyze the saturated harmonic current caused of the transformer core of its Crack cause mainly in measuring process significantly to increase, make generator outlet voltage waveform generation Severe distortion, the requirement that voltage waveform coefficient that standard specifies is less than 3% cannot be met, at present, the domestic research having started this respect, mainly undertaken, at present based on passive filtering and fixed capacity by capacitive current compensation and harmonic wave control two angles.But because transformer capacity is different, delivery test electric pressure is different, makes regulation effect unstable.
Summary of the invention
The object of the invention is to provide a kind of generator filtering control method, by sampling generator bus voltage, compare with reference voltage and obtain error signal, adopt filter capacity converting means, make whole device adapt to the filtering requirements of the No-load Test of Transformer of different capabilities and electric pressure, efficiently solve the problems referred to above existed in background technology.
Technical scheme of the present invention is:
A kind of generator filtering control method, comprises following steps: adopt closed-loop control, and master controller gathers the voltage and current signal of generator bus, filter, filter capacity converting means, transformer; By comparing generator bus voltage signal and system reference value, obtaining departure, calculating the harmonic content in now generator bus and required compensation capacity; Single-chip microcomputer again through master controller calculates, and obtains real-time control signal; Control signal is amplified through driver module, vacuum on-load operation switch tap position in control capability converting means, filter is made to absorb the harmonic wave on generator bus with optimal capacity, realize uninterrupted filter capacity to regulate, reach the object of filtering generator bus harmonic wave, make generator bus voltage waveform meet standard-required.
Described master controller is connected to each other by electric current and voltage sampling apparatus one and generator, be connected to each other by electric current and voltage sampling apparatus two and filter, be connected to each other by electric current and voltage sampling apparatus three and transformer, be connected to each other by driver module and filter capacity converting means, filter is connected to each other by filter capacity converting means and generator; Gathered the electric current and voltage of generator bus by electric current and voltage sampling apparatus one, gathered the electric current and voltage of filter by electric current and voltage sampling apparatus two, gathered the electric current and voltage of transformer by electric current and voltage sampling apparatus three; Control filter capacity converting means by driver module, adapt to the filtering requirements of the No-load Test of Transformer of different capabilities and electric pressure.
Described master controller main element is DSP2812 chip, the generator bus voltage gathered, compare with the reference voltage in system, obtain error signal, required control signal is calculated according to filtering computational methods through master controller, control filter capacity converting means by drive unit, control filter and absorb the harmonic wave on generator bus thus the object reaching filtering generator bus harmonic wave.
The invention has the beneficial effects as follows: by sampling generator bus voltage, compare with reference voltage and obtain error signal, adopt filter capacity converting means, whole device is made to adapt to the filtering requirements of the No-load Test of Transformer of different capabilities and electric pressure, give full play to single-chip microcomputer speed fast, the characteristic that stability is high, in conjunction with filter capacity converting means, uninterruptedly can regulate filter capacity in real time, maintain generator bus voltage waveform to stablize, meet standard-required, make device reliable and stable, strong adaptability.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention;
Fig. 2 is main program flow chart of the present invention;
Fig. 3 is the structure chart of filter capacity converting means of the present invention;
In figure: master controller 1, electric current and voltage sampling apparatus 1, electric current and voltage sampling apparatus 23, generator 4, driver module 5, electric current and voltage sampling apparatus 36, transformer 7, filter capacity converting means 8, filter 9.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
A kind of generator filtering control method, comprises following steps: adopt closed-loop control, and master controller gathers the voltage and current signal of generator bus, filter, filter capacity converting means, transformer; By comparing generator bus voltage signal and system reference value, obtaining departure, calculating the harmonic content in now generator bus and required compensation capacity; Single-chip microcomputer again through master controller calculates, and obtains real-time control signal; Control signal is amplified through driver module, vacuum on-load operation switch tap position in control capability converting means, filter is made to absorb the harmonic wave on generator bus with optimal capacity, realize uninterrupted filter capacity to regulate, reach the object of filtering generator bus harmonic wave, make generator bus voltage waveform meet standard-required.
Described master controller 1 is connected to each other by electric current and voltage sampling apparatus 1 and generator 4, be connected to each other by electric current and voltage sampling apparatus 23 and filter 9, be connected to each other by electric current and voltage sampling apparatus 36 and transformer 7, be connected to each other by driver module 5 and filter capacity converting means 8, filter 9 is connected to each other by filter capacity converting means 8 and generator 4; Gathered the electric current and voltage of generator 4 bus by electric current and voltage sampling apparatus 1, gathered the electric current and voltage of filter 9 by electric current and voltage sampling apparatus 23, gathered the electric current and voltage of transformer 7 by electric current and voltage sampling apparatus 36; Control filter capacity converting means 8 by driver module 5, adapt to the filtering requirements of the No-load Test of Transformer of different capabilities and electric pressure.
Described master controller is DSP2812 chip, the generator bus voltage gathered, compare with the reference voltage in system, obtain error signal, required control signal is calculated according to filtering computational methods through master controller, control filter capacity converting means by drive unit, control filter and absorb the harmonic wave on generator bus thus the object reaching filtering generator bus harmonic wave.
With reference to accompanying drawing 3, L1 and L2 in filter capacity converting means is variable inductance, adopts cross connection type vacuum loaded switch pondage, can uninterruptedly in real time in process of the test regulate, inductance and capacitor C1, C2 filter in series.
With reference to accompanying drawing 2, concrete steps of the present invention are as follows:
1, automatically initialization is run;
2, judge whether power-on self-test completes, if do not completed, after fault alarm, automatically run initialization;
3, start after completing self-inspection, judged whether fault alarm; If there is fault alarm, after carrying out troubleshooting, automatically run initialization;
4, the voltage and current signal of generator bus, filter, filter capacity converting means, transformer is gathered; Relatively generator bus virtual voltage and reference value, obtain departure, calculates the harmonic content in now generator bus and required compensation capacity, obtain real-time control signal;
5, judge whether generator bus voltage waveform meets standard; If do not met, after changing PI regulating parameter, automatically run initialization;
6, control signal is increased by driver module;
7, the vacuum on-load operation switch in control capability converting means, makes the harmonic wave on filter absorption generator bus, makes generator bus voltage waveform meet standard-required;
8, judge whether test terminates; If do not terminated, automatically run initialization;
9, terminate.
In sum, by the present invention, uninterruptedly can regulate filter capacity in real time, reach maintenance generator bus voltage waveform and stablize, meet the object of standard-required.
Claims (3)
1. a generator filtering control method, is characterized in that comprising following steps: adopt closed-loop control, and master controller gathers the voltage and current signal of generator bus, filter, filter capacity converting means, transformer; By comparing generator bus voltage signal and system reference value, obtaining departure, calculating the harmonic content in now generator bus and required compensation capacity; Single-chip microcomputer again through master controller calculates, and obtains real-time control signal; Control signal is amplified through driver module, vacuum on-load operation switch tap position in control capability converting means, filter is made to absorb the harmonic wave on generator bus with optimal capacity, realize uninterrupted filter capacity to regulate, filtering generator bus harmonic wave, makes generator bus voltage waveform meet standard-required.
2. a kind of generator filtering control method according to claim 1, it is characterized in that: described master controller is connected to each other by electric current and voltage sampling apparatus one and generator, be connected to each other by electric current and voltage sampling apparatus two and filter, be connected to each other by electric current and voltage sampling apparatus three and transformer, be connected to each other by driver module and filter capacity converting means, filter is connected to each other by filter capacity converting means and generator; The electric current and voltage of generator (4) bus is gathered by electric current and voltage sampling apparatus one (2), gathered the electric current and voltage of filter (9) by electric current and voltage sampling apparatus two (3), gathered the electric current and voltage of transformer (7) by electric current and voltage sampling apparatus three (6); Control filter capacity converting means (8) by driver module (5), adapt to the filtering requirements of the No-load Test of Transformer of different capabilities and electric pressure.
3. a kind of generator filtering control method according to claim 1, is characterized in that: the main element of described master controller (1) is DSP2812 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002232.1A CN105450114A (en) | 2015-12-29 | 2015-12-29 | Generator filtering control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002232.1A CN105450114A (en) | 2015-12-29 | 2015-12-29 | Generator filtering control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105450114A true CN105450114A (en) | 2016-03-30 |
Family
ID=55559988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511002232.1A Pending CN105450114A (en) | 2015-12-29 | 2015-12-29 | Generator filtering control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105450114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712614A (en) * | 2017-03-17 | 2017-05-24 | 保定天威保变电气股份有限公司 | Waveform factor correcting device and waveform factor correcting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08275395A (en) * | 1995-03-31 | 1996-10-18 | Kyushu Electric Power Co Inc | Filter device |
| CN101989746A (en) * | 2010-11-10 | 2011-03-23 | 国网南自控股（杭州）有限公司 | On-line dynamic harmonic treatment device |
| CN103560514A (en) * | 2013-09-23 | 2014-02-05 | 株洲变流技术国家工程研究中心有限公司 | Reactive power compensation and harmonic treatment system |
| CN104362631A (en) * | 2014-11-06 | 2015-02-18 | 张文景 | Control method for high-power reactive and harmonic dynamic hybrid compensation system |
| CN104393605A (en) * | 2014-10-23 | 2015-03-04 | 哈尔滨工业大学 | Reactive continuous compensation control method for thyristor switched filter |
| CN204243757U (en) * | 2014-10-28 | 2015-04-01 | 国网辽宁省电力有限公司朝阳供电公司 | A kind of SVG device for removing Harmonious Waves in Power Systems |
-
2015
- 2015-12-29 CN CN201511002232.1A patent/CN105450114A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08275395A (en) * | 1995-03-31 | 1996-10-18 | Kyushu Electric Power Co Inc | Filter device |
| CN101989746A (en) * | 2010-11-10 | 2011-03-23 | 国网南自控股（杭州）有限公司 | On-line dynamic harmonic treatment device |
| CN103560514A (en) * | 2013-09-23 | 2014-02-05 | 株洲变流技术国家工程研究中心有限公司 | Reactive power compensation and harmonic treatment system |
| CN104393605A (en) * | 2014-10-23 | 2015-03-04 | 哈尔滨工业大学 | Reactive continuous compensation control method for thyristor switched filter |
| CN204243757U (en) * | 2014-10-28 | 2015-04-01 | 国网辽宁省电力有限公司朝阳供电公司 | A kind of SVG device for removing Harmonious Waves in Power Systems |
| CN104362631A (en) * | 2014-11-06 | 2015-02-18 | 张文景 | Control method for high-power reactive and harmonic dynamic hybrid compensation system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712614A (en) * | 2017-03-17 | 2017-05-24 | 保定天威保变电气股份有限公司 | Waveform factor correcting device and waveform factor correcting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103675563B (en) | Energy-saving multifunction power test system | |
| WO2015007070A1 (en) | Method for testing dynamic model parameter of wind power plant | |
| CN106226632A (en) | A kind of motor variable-frequency driver aging testing system and method for testing thereof | |
| CN102255603B (en) | Comprehensive control system and method based on high voltage motor control and reactive power compensation | |
| CN204304456U (en) | A kind of electrical network auto-reactive compensation system | |
| CN102496950B (en) | Power unit grid-connected and feedback device for high-voltage concatenated frequency converter | |
| CN202221897U (en) | Low voltage integration distribution box | |
| CN204886200U (en) | Distribution transformer unbalanced three phase current detection compensation arrangement | |
| CN102215027A (en) | Cascade speed control device | |
| CN104167747A (en) | Unbalance and reactive compensation control device for low-voltage power grid | |
| CN105450114A (en) | Generator filtering control method | |
| CN203339701U (en) | Multi-target loss reduction device | |
| CN204903996U (en) | Dry -type transformer drying control device | |
| CN209673945U (en) | A kind of IGBT power module test macro | |
| CN204333963U (en) | A kind of two CSTR high speed stillness wattless occurrence apparatus | |
| CN203630258U (en) | An energy-saving type multifunctional electric power test system | |
| CN203340031U (en) | Power frequency inductance regulation resonance device | |
| CN205231742U (en) | Generator filtering controller | |
| CN202206344U (en) | Integrated control system based on high-voltage motor control and reactive power compensation | |
| CN204156765U (en) | A kind of high-voltage intelligent dynamic compensation soft starter device | |
| CN204086470U (en) | A kind of high-performance low-voltage filter capacitor overpressure resistance detecting device | |
| CN203941238U (en) | A kind of 35kV high-voltage bridging capacitor group dielectric loss on-line monitoring device | |
| CN203377602U (en) | High-efficiency intelligent compound voltage compensation electricity-saving device | |
| CN204008910U (en) | The band of automatic Regulation loading capacitance-regulating distribution transformer carries detection system | |
| CN202931029U (en) | Intelligent monitoring terminal for distribution transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
|
| RJ01 | Rejection of invention patent application after publication |