CN206671430U - A kind of system measured based on multiple frequency power sources to reactor noise - Google Patents
A kind of system measured based on multiple frequency power sources to reactor noise Download PDFInfo
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- CN206671430U CN206671430U CN201720364199.5U CN201720364199U CN206671430U CN 206671430 U CN206671430 U CN 206671430U CN 201720364199 U CN201720364199 U CN 201720364199U CN 206671430 U CN206671430 U CN 206671430U
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- 238000012360 testing method Methods 0.000 description 7
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- 238000005259 measurement Methods 0.000 description 4
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
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Abstract
The utility model discloses a kind of system measured based on multiple frequency power sources to reactor noise, system includes：First-harmonic resonance unit, for establishing the resonant tank for the fundamental frequency being connected with reactor；The electric current of fundamental frequency is injected by reactor by first-harmonic resonance loop；Harmonic resonance unit, for establishing the resonant tank for the harmonic frequency being connected with reactor；The electric current of harmonic frequency is injected by reactor by harmonic resonance loop；Measuring unit, for obtaining noise signal caused by reactor, and calculate the parameter of noise signal.By inputting multiple frequency difference magnitude currents simultaneously, can the more real real operation conditions of emulating reactance device, measure reactor substantially close to site environment injection different frequency fundamental wave, harmonic wave running situation under noise parameter, it can measure substantially close to the noise parameter under the true running situation of reactor, be evaluated for reactor noise parameter and improvement provides accurate science data.
Description
Technical field
Reactor noise testing field is the utility model is related to, multiple frequency power sources pair are based on more particularly, to one kind
The system that reactor noise measures.
Background technology
Reactor turns into a main noise source, particularly smoothing reactor and filtering in HVDC converter substation
The noise of reactor is even more serious, is the difficult point of environmental improvement in power system.Due to reactor noise generation with it is many because
Pass is known as, because the noise of reactor is close with the harmonic relationships for injecting reactor, makes measurement and evaluation to reactor noise
It is relatively difficult.At present, reactor noise testing has unified standard, but the method for implanting of power supply only has single-frequency power supply note
Enter, then carry out calculating synthesis with multiple single power supply measurement results, due to single power supply injection and reactor actual use shape
State gap is very remote, although a noise level of reactor can be measured, is difficult to react making an uproar for reactor real use state
Sound is horizontal, and it is qualified to calculate noise during so as to cause design, and noise is exceeded in Practical Project, is unfavorable for environment guarantor
Shield.
The electric current flowed through in the reactor of general high voltage DC converter station is in addition to fundamental frequency electric current, also one or two
Individual main harmonic electric current.Because other subharmonic currents are much smaller than fundamental current and main harmonic electric current, therefore, the noise master of reactor
To be produced by fundamental wave and the main harmonic function of current.Prior art is gone equivalent using single-frequency power supply, it is impossible to which correct response is actual
The interaction of different frequency harmonic wave in scene.Therefore, can not truly be measured using the equivalent test method of single-frequency power supply
Close to the noise situations of different frequency under reactor actual condition.
This is stranded, it is necessary to which a kind of technology, utilizes the equivalent real work scene of multi-frequency power supply, to the noise of reactor with solution
The problem of measuring.
The content of the invention
The invention provides a kind of system measured based on multiple frequency power sources to reactor noise, to solve to utilize
The problem of noise testing that multiple frequency power sources are equivalent to be carried out to reactor under true running situation.
In order to solve the above problems, the present invention provides a kind of to be measured based on multiple frequency power sources to reactor noise
System, the system include：
First-harmonic resonance unit, for establishing the resonant tank for the fundamental frequency being connected with reactor；Pass through the fundamental wave
The electric current of fundamental frequency is injected the reactor by resonant tank；
Harmonic resonance unit, for establishing the resonant tank for the harmonic frequency being connected with reactor；Pass through the harmonic wave
The electric current of harmonic frequency is injected the reactor by resonant tank；
Measuring unit, for obtaining noise signal caused by the reactor, and calculate the parameter of the noise signal.
Preferably, the first-harmonic resonance unit, it is additionally operable to pass through transformer, capacitor and the reactance using fundamental wave power supply
Device forms series connection first-harmonic resonance loop；
Preferably, the harmonic resonance unit, it is additionally operable to pass through transformer, capacitor and the reactance using Harmonic Current
Device forms series connection harmonic resonance loop.
Preferably, the first-harmonic resonance unit, it is additionally operable to pass through transformer, capacitor and the reactance using fundamental wave power supply
Device forms first-harmonic resonance loop in parallel；
Preferably, the harmonic resonance unit, it is additionally operable to pass through transformer, capacitor and the reactance using Harmonic Current
Device forms harmonic resonance loop in parallel.
Preferably, the first-harmonic resonance unit, it is additionally operable to pass through transformer, capacitor and the reactance using fundamental wave power supply
Device forms series connection and first-harmonic resonance loop in parallel；
Preferably, the harmonic resonance unit, it is additionally operable to pass through transformer, capacitor and the reactance using Harmonic Current
Device forms series connection and harmonic resonance loop in parallel.
Preferably, the measuring unit obtains noise signal caused by the reactor by sonic transducer.
Technical scheme, can more real emulating reactance device by inputting multiple frequency difference magnitude currents simultaneously
Real operation conditions, the reactor measured substantially close to site environment are injecting the running situation of different frequency fundamental wave, harmonic wave
Under noise parameter.It can be measured using the method for technical solution of the present invention measurement reactor noise true substantially close to reactor
Noise parameter under running situation, is evaluated for reactor noise parameter and improvement provides accurate science data.
Brief description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is that reactor noise is measured based on multiple frequency power sources according to one kind of one embodiment of the present invention
System construction drawing；And
Fig. 2 is the electrical block diagram measured to reactor noise according to an embodiment of the present invention；
The electrical block diagrams measured to reactor noise of Fig. 3 according to an embodiment of the present invention；
The electrical block diagrams measured to reactor noise of Fig. 4 according to an embodiment of the present invention.
Embodiment
The illustrative embodiments of the present invention are introduced with reference now to accompanying drawing, however, the present invention can use many different shapes
Formula is implemented, and is not limited to embodiment described herein, there is provided these embodiments are to disclose at large and fully
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, be appreciated that and its
The linguistic context of association area has consistent implication, and is not construed as Utopian or overly formal meaning.
Fig. 1 is that reactor noise is measured based on multiple frequency power sources according to one kind of one embodiment of the present invention
System construction drawing.Embodiment of the present invention provides a kind of multi-frequency power supply injection reactor, to carry out noise survey to reactor
The system of amount.Embodiments of the present invention use an independent fundamental wave power supply, and several independent Harmonic Currents form it is more
Frequency power, and the fundamental wave of injection reactor and individual harmonic current, voltage is in controllable state, according to reactor current
Signal, testing transformer is each sent into, is inputted by transformer, fundamental frequency electric current harmonic frequency current is loaded onto simultaneously
Tested reactor, reactor produce noise through loading the electric current of different frequency.Embodiments of the present invention will with sonic transducer
The reactor noise signal transmission of acquisition to noise-measuring instrument carries out calculating analysis and obtains its noise parameter.As shown in figure 1, system
100 include first-harmonic resonance unit 101, harmonic resonance unit 102, measuring unit 103.
First-harmonic resonance unit 101, for establishing the resonant tank for the fundamental frequency being connected with reactor；It is humorous by fundamental wave
The electric current of fundamental frequency is injected reactor by the loop that shakes；
Harmonic resonance unit 102, for establishing the resonant tank for the harmonic frequency being connected with reactor；It is humorous by harmonic wave
The electric current of harmonic frequency is injected reactor by the loop that shakes；
Measuring unit 103, for obtaining noise signal caused by reactor, and calculate the parameter of noise signal.
Preferably, first-harmonic resonance unit 101, it is additionally operable to pass through transformer, capacitor and reactor shape using fundamental wave power supply
Bunchiness symbasis wave resonance loop.
Preferably, harmonic resonance unit 102, it is additionally operable to pass through transformer, capacitor and reactor shape using Harmonic Current
Into series connection harmonic resonance loop.
Preferably, first-harmonic resonance unit 101, it is additionally operable to pass through transformer, capacitor and reactor shape using fundamental wave power supply
Into first-harmonic resonance loop in parallel.
Preferably, harmonic resonance unit 102, it is additionally operable to pass through transformer, capacitor and reactor shape using Harmonic Current
Into harmonic resonance loop in parallel.
Preferably, first-harmonic resonance unit 101, it is additionally operable to pass through transformer, capacitor and reactor shape using fundamental wave power supply
Into series connection and first-harmonic resonance loop in parallel；
Preferably, harmonic resonance unit 102, it is additionally operable to pass through transformer, capacitor and reactor shape using Harmonic Current
Into series connection and harmonic resonance loop in parallel.
Preferably, measuring unit 103 obtains noise signal caused by reactor by sonic transducer.
The embodiment of the present invention is illustrated below:
Fig. 2 is embodiments of the present invention:Base of connecting is formed with reactor by transformer, capacitor using fundamental wave power supply
Wave resonance loop；Harmonic resonance loop of connecting is formed with reactor by transformer, capacitor using Harmonic Current.Such as Fig. 2 institutes
Show, Uf1-1 is fundamental wave power supply, C1-1 compensation capacitors, T1-1 transformers, L1 are reactor, Uf1-2 is Harmonic Current, C1-2
It is that transformer, P1-1 and P1-2 represent several sonic transducers of multi-direction distribution, R1-1 as noise testing for capacitor, T1-2
Instrument, IL1-1 are that fundamental current, the IL1-2 of the tested reactor of inflow are the harmonic current for flowing into tested reactor.As shown in Fig. 2
Two fundamental wave power supply Uf1-1, capacitor C1-1, reactor L1 harmonic power supplys Uf1-2, capacitor C1-2, reactor L1 loops
Respectively to respective electric power generating composition series resonant circuit, fundamental wave power supply Uf1-1, Harmonic Current Uf1-2 can be made to meet tested reactance
Under conditions of the fundamental current IL1-1 harmonic electric current IL1-2 parameters of device, the requirement to capacity is minimized, and is easy to experiment real
Apply.Fundamental wave power supply Uf1-1, Harmonic Current Uf1-2 by oneself transformer T input, by the electric current of each frequency be input to by
Survey in reactor L, may then pass through and each frequency current is monitored in real time, ensure to flow into tested reactor L electric current IL parameters
It is consistent with practical operation situation, tested reactor L noise signal is gathered and transmits to noise-measuring instrument 2 by sonic transducer 1
Row calculates analysis and obtains its noise parameter.
In Fig. 2, fundamental wave power supply Uf1-1, electric capacity C1-1, reactor L1 harmonic power supplys Uf1-2, electric capacity C1-2, reactor
Two loops of L1 respectively to respective electric power generating composition series resonant circuit, can make power supply meet the fundamental current of tested reactor and
Under conditions of harmonic current, the requirement to capacity is minimized, and is easy to experiment to implement.Fundamental wave power supply harmonic power supply passes through respectively
Transformer T1-1 and transformer T1-2 input fundamental current harmonic electric currents, tested reactor is input to by the electric current of each frequency
In L1, it may then pass through and each frequency current is monitored in real time, ensure to flow into tested reactor L1 electric current IL1-1 and electricity
Stream IL1-2 parameters are consistent with practical operation situation, by sonic transducer P1-1 and sonic transducer P1-2 by tested reactor L1's
Noise signal gather and transmit to noise-measuring instrument R1-1 carry out calculate analysis obtain its noise parameter.
Basic circuit principle is that fundamental wave power supply Uf1-1 and capacitor C1-1 and tested reactor L1 forms loop in Fig. 2
1, Harmonic Current Uf1-2 form loop 2, fundamental wave power supply Uf1-1, Harmonic Current with capacitor C1-2 and tested reactor L1
Uf1-2 inputs fundamental current harmonic electric current into reactor L1 by respective transformer T1-1 and transformer T1-2 respectively,
Resonance occurs under respective supply frequency for capacitor C1-1, capacitor C1-2, i.e.,:
ω1-1、ω1-2Resonance angular frequency respectively in loop 1, loop 2, L1To be tested the inductance of reactor, C1-1、C1-2
The electric capacity of capacitor respectively in loop 1, loop 2.
Fig. 3 is another embodiment of the present invention.Formed simultaneously by transformer, capacitor and reactor using fundamental wave power supply
Symbasis wave resonance loop；And harmonic resonance loop in parallel is formed with reactor by transformer, capacitor using Harmonic Current.
As shown in Figure 3, fundamental wave power supply Uf2-1, capacitor C2-1, reactor L2 harmonic power supplys Uf2-2, capacitor C2-2, reactor
Two loops of L2 respectively to respective electric power generating composition antiresonant circuit, can make power supply meet tested reactor L2 fundamental voltage and
Under conditions of harmonic voltage, the requirement to power supply capacity is minimized, and is easy to experiment to implement.Fundamental wave power supply harmonic power supply is distinguished
By inputting fundamental current harmonic electric current into tested reactor L2 to respective transformer T2-1 and transformer T2-2.This hair
Bright embodiment, by monitoring fundamental current harmonic electric current in real time, ensure to flow into tested reactor L2 electric current
IL2-1 is consistent with electric current IL2-2 with practical operation situation, and sonic transducer P2-1 and sonic transducer P2-2 are by tested reactor L2's
Noise signal is gathered and transmitted to noise-measuring instrument R2-1, and carrying out calculating analysis by noise-measuring instrument R2-1 obtains noise ginseng
Number.The principle of resonance occurs under respective supply frequency for capacitor C2-1, capacitor C2-2 with Fig. 2 embodiments.
Fig. 4 is embodiments of the present invention, formed using fundamental wave power supply by transformer, capacitor and reactor connect and
First-harmonic resonance loop in parallel；Formed by transformer, capacitor and reactor and connected and harmonic resonance in parallel using Harmonic Current
Loop.As shown in figure 4, fundamental wave power supply Uf3-1, capacitor C3-1, capacitor C3-3, reactor L3 harmonic power supplys Uf3-2, electricity
Two container C3-2, capacitor C3-4, reactor L3 loops respectively to each fundamental wave power supply power supply harmonic electric power generating composition series connection and
Hybrid resonant circuit in parallel, is minimized the requirement to power supply capacity, is easy to experiment to implement.Fundamental wave power supply Uf3-1 passes through change
The electric current of fundamental wave supply frequency is input in tested reactor L3 by depressor T3-1, and Harmonic Current Uf3-2 passes through transformer T3-2
The electric current of Harmonic Current frequency is input in tested reactor L3, then can be by harmonious to fundamental frequency electric current IL3-1
Wave frequency rate electric current IL3-2 is monitored in real time, ensures electric current IL3-1 and electric current the IL3-2 parameter and reality being flowed into reactor L3
Border running situation is consistent.Tested reactor L3 noise signal is gathered and transmitted by sonic transducer P3-1 and sonic transducer P3-2
To noise-measuring instrument R3-1, calculating analysis is carried out by noise-measuring instrument R3-1 and obtains noise parameter.
By the test circuit of above-mentioned embodiment, embodiment of the present invention is injected for example using multiple frequency power sources:One
Individual fundamental wave power supply, and several different Harmonic Currents, capacitor is each selected according to electric voltage frequency.Each power supply, the electricity of selection
Container forms independent loop with tested reactor.Electric current is sent into respective testing transformer by each frequency power source, then by humorous
The loop that shakes is input in tested reactor, and ensure to flow into the parameter of the fundamental current of tested reactor and individual harmonic current with
The tested true running status of reactor is basically identical, makes the noise parameter of tested reactor in experiment substantially close to actual motion
In the case of be tested reactor noise level.The multiple frequency power sources of embodiment of the present invention inject measurement reactor Noise Method
The noise parameter measured is evaluated for noise parameter close to the noise level under true running situation and improvement provides accurate section
Learn data.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
What subsidiary Patent right requirement was limited, except the present invention other embodiments disclosed above equally fall the present invention's
In the range of.
Normally, all terms used in the claims are all solved according to them in the usual implication of technical field
Release, unless clearly being defined in addition wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurately order, unless explicitly stated otherwise.
Claims (5)
1. a kind of system measured based on multiple frequency power sources to reactor noise, the system are included：
First-harmonic resonance unit, for establishing the resonant tank for the fundamental frequency being connected with reactor；Pass through the first-harmonic resonance
The electric current of fundamental frequency is injected the reactor by loop；
Harmonic resonance unit, for establishing the resonant tank for the harmonic frequency being connected with reactor；Pass through the harmonic resonance
The electric current of harmonic frequency is injected the reactor by loop；
Measuring unit, for obtaining noise signal caused by the reactor, and calculate the parameter of the noise signal.
2. system according to claim 1,
The first-harmonic resonance unit, it is additionally operable to be formed and connected with the reactor by transformer, capacitor using fundamental wave power supply
First-harmonic resonance loop；
The harmonic resonance unit, it is additionally operable to be formed and connected with the reactor by transformer, capacitor using Harmonic Current
Harmonic resonance loop.
3. system according to claim 1,
The first-harmonic resonance unit, it is additionally operable to be formed with the reactor by transformer, capacitor using fundamental wave power supply in parallel
First-harmonic resonance loop；
The harmonic resonance unit, it is additionally operable to be formed with the reactor by transformer, capacitor using Harmonic Current in parallel
Harmonic resonance loop.
4. system according to claim 1,
The first-harmonic resonance unit, it is additionally operable to be formed and connected with the reactor by transformer, capacitor using fundamental wave power supply
With first-harmonic resonance loop in parallel；
The harmonic resonance unit, it is additionally operable to be formed and connected with the reactor by transformer, capacitor using Harmonic Current
With harmonic resonance loop in parallel.
5. system according to claim 1, the measuring unit is obtained by sonic transducer and made an uproar caused by the reactor
Acoustical signal.
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| CN201720364199.5U CN206671430U (en) | 2017-04-07 | 2017-04-07 | A kind of system measured based on multiple frequency power sources to reactor noise |
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| CN201720364199.5U CN206671430U (en) | 2017-04-07 | 2017-04-07 | A kind of system measured based on multiple frequency power sources to reactor noise |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970275A (en) * | 2017-04-07 | 2017-07-21 | 中国电力科学研究院 | A kind of method and system measured based on multiple frequency power sources to reactor noise |
| CN115498645A (en) * | 2022-10-13 | 2022-12-20 | 费莱(浙江)科技有限公司 | Method and system for reducing dangerous resonance between system impedances |
-
2017
- 2017-04-07 CN CN201720364199.5U patent/CN206671430U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970275A (en) * | 2017-04-07 | 2017-07-21 | 中国电力科学研究院 | A kind of method and system measured based on multiple frequency power sources to reactor noise |
| CN115498645A (en) * | 2022-10-13 | 2022-12-20 | 费莱(浙江)科技有限公司 | Method and system for reducing dangerous resonance between system impedances |
| CN115498645B (en) * | 2022-10-13 | 2023-08-08 | 费莱(浙江)科技有限公司 | Method and system for reducing dangerous resonance between system impedances |
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