CN103033694B - Online test system, device and method of wind power generation equipment - Google Patents
Online test system, device and method of wind power generation equipment Download PDFInfo
- Publication number
- CN103033694B CN103033694B CN201110302146.8A CN201110302146A CN103033694B CN 103033694 B CN103033694 B CN 103033694B CN 201110302146 A CN201110302146 A CN 201110302146A CN 103033694 B CN103033694 B CN 103033694B
- Authority
- CN
- China
- Prior art keywords
- slave devices
- wind energy
- energy generating
- generating plant
- axle component
- 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.)
- Active
Links
Abstract
The invention relates to an online test system, a device and a method of wind power generation equipment. The online test system comprises a public supply network, wind power generation equipment and an online test device, wherein the online test device comprises a plurality of doubly-fed pulse-width modulation (PWM) converters connected in a parallel mode, one of the plurality of doubly-fed PWM converters is a host device, the others of the plurality of doubly-fed PWM converters are slave devices, the host device regulates output current of each slave device in real time to achieve current-sharing control and controls every slave device within every preset adjustment step length in the process of outputting abnormal work signal to the wind power generation equipment. According to the online test system, the device and the method of the wind power generation equipment, the wind power generation equipment can online test properties of the wind power generation equipment in the process of providing normal power supply to the public supply network. Besides, current output from the wind power generation equipment to the public supply network on the same circuit, inputting of abnormal work signal to the wind power generation equipment and test to the wind power generation equipment can be realized.
Description
Technical field
The present invention relates to Online Transaction Processing, more particularly, relate to a kind of Online Transaction Processing of wind energy generating plant, device and method.
Background technology
In operation of power networks process, there will be electrical network high voltage transient, electrical network shorted to earth, harmonic content become the fault such as large, because wind energy is relative to the instability generated electricity in thermoelectricity, water, when electric network fault, wind energy generating plant due to self capacity limit, easy off-grid and can not continue generating.Along with the increase of wind energy generating plant capacity, this problem is also all the more obvious.Because the actual capacity of electrical network is huge, wind power generation unit is caused to carry out above-mentioned electric network fault experimental verification in the development phase to model machine very difficult, many manufacturers adopt on-the-spot method on probation, but electric network fault has very large randomness, on-the-spot trying out often takies the too much time, affects the payment of product.
The operation of power networks Characteristics Detection of wind energy generating plant mainly comprises: that line voltage is symmetrical/asymmetric, phase place is symmetrical or asymmetric, mains by harmonics voltage, harmonic current, fault ride-through of power grid FRT (Fault RideThrough), line voltage transient state low pressure or high pressure saltus step and gradual fluctuation, mains frequency skew and fluctuation, grid short circuit, electrical network break is equal, test method is complicated and experimentation cost is high.
Conventional AC SOURCE (AC power supply) waveform generator is energy uniflux, for the subjects such as wind-driven generator unit of energy in bidirectional flow, then helpless.
Summary of the invention
The technical problem to be solved in the present invention is, carry out carrying out on-line checkingi to wind energy generating plant in the process of normal power supply to public electric wire net at wind energy generating plant for not yet realizing in prior art, and the unrealized wind energy generating plant that carries out on same circuit is to public electric wire net output current and the defect to wind energy generating plant output detections signal, provides a kind of Online Transaction Processing of wind energy generating plant, device and method.
The technical solution adopted for the present invention to solve the technical problems is: the Online Transaction Processing constructing a kind of wind energy generating plant, and it comprises public electric wire net and wind energy generating plant, between described public electric wire net and wind energy generating plant, be provided with online testing device; Described online testing device comprises the multiple double-fed PWM converter be connected in parallel;
In the process of the described wind energy generating plant of arbitrary detection, one of them of described multiple double-fed PWM converter is main process equipment, and remaining double-fed PWM converter is slave devices respectively, described main process equipment is used for the output current regulating each slave devices in real time, to carry out sharing control, and in the process to described wind energy generating plant output abnormality working signal, in each default adjustment step-length, regulate the instantaneous step-length of inverter voltage, in the Online Transaction Processing of wind energy generating plant of the present invention, in each default adjustment step-length, the instantaneous step-length of inverter voltage is regulated to be specially: in each default adjustment step-length, controlling each slave devices uses circulation D axle component to regulate inverter voltage given vector D axle component, and use circulation Q axle component to regulate the instantaneous step-length of inverter voltage.
In the Online Transaction Processing of wind energy generating plant of the present invention, each slave devices passes through the voltage and the frequency that detect respective bypass source, to determine circulation D axle component and circulation Q axle component; Or, in the process of each communicating interrupt of main process equipment, directly by communication assignment, determine circulation D axle component and the circulation Q axle component of each slave devices.
In the Online Transaction Processing of wind energy generating plant of the present invention, described main process equipment is used for the size of the output current of all slave devices feedbacks of real-time reception, to regulate the output current of all slave devices, thus sharing control is carried out to described multiple double-fed PWM converter; Wherein, when the output current of at least one slave devices is greater than default threshold value, stop all slave devices output currents.
In the Online Transaction Processing of wind energy generating plant of the present invention, described abnormal work signal is voltage transient high pressure skip signal or harmonic signal.
In the Online Transaction Processing of wind energy generating plant of the present invention, when system electrification, each double-fed PWM converter sends the pulse signal of different length respectively; Described main process equipment is the longest double-fed PWM converter of pulse signal exported.
According to another aspect of the present invention, provide a kind of online testing device, it is for being connected to carry out on-line checkingi to described wind energy generating plant between public electric wire net and wind energy generating plant, and it comprises the multiple double-fed PWM converter be connected in parallel;
In the process of the described wind energy generating plant of arbitrary detection, one of them of described multiple double-fed PWM converter is main process equipment, and remaining double-fed PWM converter is slave devices respectively, described main process equipment is used for the output current regulating each slave devices in real time, to carry out sharing control, and when to described wind energy generating plant output abnormality working signal, in each default adjustment step-length, regulate the instantaneous step-length of inverter voltage, in online testing device of the present invention, in each default adjustment step-length, the instantaneous step-length of inverter voltage is regulated to be specially: in each default adjustment step-length, controlling each slave devices uses circulation D axle component to regulate inverter voltage given vector D axle component, and use circulation Q axle component to regulate the instantaneous step-length of inverter voltage.
In online testing device of the present invention, each slave devices passes through the voltage and the frequency that detect respective bypass source, to determine circulation D axle component and circulation Q axle component; Or, in the process of each communicating interrupt of main process equipment, directly by communication assignment, determine circulation D axle component and the circulation Q axle component of each slave devices.
In online testing device of the present invention, described main process equipment is used for the size of the output current of all slave devices feedbacks of real-time reception, to regulate the output current of all slave devices, thus carries out sharing control to described multiple double-fed PWM converter; Wherein, when the output current of at least one slave devices is greater than default threshold value, the output current of all slave devices is stopped.
In online testing device of the present invention, in online testing device of the present invention, described abnormal work signal is voltage transient high pressure skip signal or harmonic signal.
According to a further aspect of the invention, a kind of on-line testing method of wind energy generating plant is provided, it uses online testing device to be connected between public electric wire net and wind energy generating plant, to carry out on-line checkingi to described wind energy generating plant, described online testing device comprises the multiple double-fed PWM converter be connected in parallel; Said method comprising the steps of:
When powering on, one of them determining described multiple double-fed PWM converter is main process equipment, and remaining double-fed PWM converter is respectively slave devices;
Described main process equipment is used for the size of the output current of all slave devices feedbacks of real-time reception, to regulate the output current of all slave devices, thus carries out sharing control to described multiple double-fed PWM converter;
In the process to described wind energy generating plant output abnormality working signal, in each default adjustment step-length, regulate the instantaneous step-length of inverter voltage.
In the on-line testing method of wind energy generating plant of the present invention, in each default adjustment step-length, the instantaneous step-length of inverter voltage is regulated to be specially: in each default adjustment step-length, controlling each slave devices uses circulation D axle component to regulate inverter voltage given vector D axle component, and uses circulation Q axle component to regulate the instantaneous step-length of inverter voltage.
In the on-line testing method of wind energy generating plant of the present invention, each slave devices passes through the voltage and the frequency that detect respective bypass source, to determine circulation D axle component and circulation Q axle component; Or, in the process of each communicating interrupt of main process equipment, directly by communication assignment, determine circulation D axle component and the circulation Q axle component of each slave devices.
In the on-line testing method of wind energy generating plant of the present invention, when the output current of at least one slave devices is greater than default threshold value, stop all slave devices output currents.
In the on-line testing method of wind energy generating plant of the present invention, described abnormal work signal is voltage transient high pressure skip signal or harmonic signal.
Implement the Online Transaction Processing of wind energy generating plant of the present invention, device and method, there is following beneficial effect: by building online testing device between public electric wire net and wind energy generating plant, can make wind energy generating plant in the process to public electric wire net normal power supply, on-line checkingi is carried out to the characteristic of wind energy generating plant; And can realize carrying out wind energy generating plant on same circuit to export to the electric current of public electric wire net, and to wind energy generating plant input abnormal work signal, wind energy generating plant is detected, thus realize by simulating grid high voltage transient and harmonic voltage, wind energy generating plant is effectively detected, particularly effective detection has been carried out to the ruuning situation at electrical network high voltage transient and when there is harmonic voltage such as current transformer in wind energy generating plant.Further, because this online testing device is formed in parallel by multiple double-fed PWM converter, namely adopt the current transformer with the three-phase bridge PWM rectification inverter circuit of double-fed topology as electrical network characteristic generating means, mate corresponding reactor, capacitor and sub controlling unit, realize simulating grid harmonic voltage, harmonic current and the saltus step of line voltage high voltage transient, test effect is equivalent to actual experimental electrical network.Cost advantage is had more compared with the actual experimental electrical network of same capacity.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the block diagram of the Online Transaction Processing of wind energy generating plant of the present invention;
Fig. 2 is the circuit theory diagrams of Online Transaction Processing first embodiment of the wind energy generating plant shown in Fig. 1;
Fig. 3 is the circuit theory diagrams of Online Transaction Processing first embodiment of the wind energy generating plant shown in Fig. 1;
Fig. 4 is the process flow diagram of the on-line testing method of wind energy generating plant of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, in the Online Transaction Processing of wind energy generating plant of the present invention, its main three major parts, i.e. public electric wire net 2, wind energy generating plant 3 and be bridged between public electric wire net 2 and wind energy generating plant 3 and be provided with online testing device 1; In this system works, wind energy generating plant 3 is in operational process, and the power supply of generation, exports to public electric wire net 2 by this online testing device 1.In addition, in order to test the performance of wind energy generating plant 3, namely detect this wind energy generating plant 3 and whether meet job requirement, relevant abnormal work signal is simulated by this online testing device 1, such as voltage transient high pressure skip signal or harmonic signal, and by this abnormal work signal injection in wind energy generating plant 3, thus, can realize in the process normally worked at this wind energy generating plant 3, detect this wind energy generating plant 3, the input and output of wind energy generating plant 3 simultaneously all perform by same three-phase line.
In order to adapt to the wind energy generating plant 3 of different capabilities size, this online testing device 1 comprises the multiple double-fed PWM converter 11 be connected in parallel; Namely the capacity of wind energy generating plant 3 is larger, need the quantity of double-fed PWM converter 11 in parallel more, otherwise the capacity of wind energy generating plant 3 is less, needs the quantity of double-fed PWM converter 11 in parallel fewer.
Be illustrated in figure 2 the first embodiment of the Online Transaction Processing of the wind energy generating plant shown in Fig. 1, wherein, public electric wire net 2 and wind energy generating plant 3 are three-phase input and output, and this online testing device 1 is only made up of a double-fed PWM converter 11.This double-fed PWM converter 11 is formed primarily of 12 switching tubes and an electric capacity, wherein, form a bridge arm structure in public electric wire net 2 side by six switching tubes and form three-phase input and output, form a bridge arm structure in the side of wind energy generating plant 3 by other six switching tubes simultaneously, also form three-phase input and output, and connect electric capacity between.Understandable, when this online testing device 1 is made up of multiple double-fed PWM converter 11, each double-fed PWM converter 11 all has identical circuit structure.
Be illustrated in figure 3 the second embodiment of the Online Transaction Processing of the wind energy generating plant shown in Fig. 1, wherein, this online testing device 1 is formed primarily of multiple double-fed PWM converter 11 parallel connection.In the process of arbitrary detection wind energy generating plant 3, one of them of the plurality of double-fed PWM converter is main process equipment, and remaining double-fed PWM converter is slave devices respectively; Understandable, in the process detecting wind energy generating plant 3 each time, this main process equipment can produce at random, also can in the process detecting wind energy generating plant 3 each time, by a double-fed PWM converter determined as main process equipment, general, can by first double-fed PWM converter as main process equipment.
In the multiple double-fed PWM converter be connected in parallel, each double-fed PWM converter is all connected with adjacent double-fed PWM converter by its bypass source, and each double-fed PWM converter is all communicated by CAN.
When in the process checking wind energy generating plant each time main process equipment be produce at random time, the deterministic process of its main process equipment can be: when this online testing device 1 powers on, each double-fed PWM converter 11 sends the pulse of a different length, and (pulse length is relevant to the numbering of double-fed PWM converter 11, and the pulse length that each double-fed PWM converter 11 exports is all different), thus compete out main process equipment by multiple double-fed PWM converter 11, preferably, double-fed PWM converter 11 the longest for the pulse length of output can be defined as main process equipment, and remaining double-fed PWM converter is slave devices respectively.Certainly, understandable, also can determine that one of them in multiple double-fed PWM converter 11 is for main process equipment by method for distinguishing, remaining be slave devices, if realization by a double-fed PWM converter as main control equipment.
After determining main process equipment, in the process that wind energy generating plant 3 is powered to public electric wire net or in the process detecting wind energy generating plant 3, control by main process equipment and regulate the size of each slave devices output current, thus realizing sharing control.Its concrete sharing control process can be: when initialization, each slave devices by the current feedback that initially exports to main process equipment, main process equipment can calculate the size of average current thus, then, continue in the process of output current at each slave devices, the size of each its output current of slave devices Real-time Feedback is to main process equipment, main process equipment judges that the size of current of the current output of this slave devices departs from the situation of the size of average current accordingly, if the electric current of the i.e. current output of this slave devices is in an error range of average current, that is, the electric current of the current output of this slave devices is positioned at [I-δ, I+ δ] interior time, then think that the size of current of the current output of this slave devices equals average current, wherein, I is assumed to the size of average current, δ is default error amount, otherwise main process equipment will send control signal to slave devices, performed the adjustment of output current by slave devices, thus realize sharing control.Preferably, in specific works, when the current output current of any one slave devices is greater than default threshold value, main process equipment will control each slave devices and stop output current, namely quit work.This threshold value preset is that be connected to the thickness of the cable length of public electric wire net and cable to each double-fed PWM converter relevant.Preferably, this threshold value preset can be 50 peaces.
In addition, when this online testing device 1 on-line checkingi wind energy generating plant 3, namely when main process equipment sends abnormal work signal to wind energy generating plant 3, such as, when main process equipment is to wind energy generating plant 3 output voltage high voltage transient skip signal or main process equipment to wind energy generating plant 3 harmonic signal, due to, the action of each slave devices saltus step cannot be completely the same, also needs main process equipment to perform sharing control to each slave devices.Now this main process equipment to the process that slave devices carries out sharing control can be: the duration that main process equipment sends abnormal work signal to wind energy generating plant is on average divided into multiple time period, each time period is one and regulates step-length, and the size of this adjustment step-length is relevant to voltage jump speed.In this process, when the current output current of some slave devices is positioned at [I-δ, I+ δ] scope outer time, main process equipment transmits control signal to this slave devices, use circulation D axle component to regulate inverter voltage given vector D axle component by this slave devices, and use circulation Q axle component to regulate the instantaneous step-length of inverter voltage, thus regulate its output current, make to be positioned in [I-δ, I+ δ] scope.Wherein, for the determination of circulation D axle component and circulation Q axle component, can be that each slave devices detects the voltage of respective bypass source and frequency determination circulation D axle component and circulation Q axle component; In addition, also can be in the process of each communicating interrupt of main process equipment, directly by communication assignment, determine circulation D axle component and the circulation Q axle component of each slave devices.
The function that this main process equipment realizes harmonic injection can be: 3,5,7 subharmonic phase-adjustable, scope [0,360 °]; Harmonic phase receives on-line control; Can not suddenly change during phase adjusted, need level and smooth to be transitioned into new setting from old setting; Inverter cuts out afterwards and harmonic phase automatic clear before opening; Inverter soft start and inversion powering phase accept the setting of harmonic phase; Its operating process can be: backstage set amount is sent to slave computer interface function according to communication protocol, is completed the isolation of variable by interface function; Set amount is decomposed into the set-point increased progressively, in each interruption, changes set-point; Three-phase coordinate time harmonic phase place is generated, angle value, angle variable quantity, relation between initial phase and initial phase changing value when operating: Θ=Σ Δ Θ+Φ after phase-locked completing.+ ΔΦ; To reset harmonic phase initial value during inverter shutdown.
The function that this main process equipment realizes line voltage high voltage transient saltus step output can be: voltage can jump to 850V from 690V, namely about 1.23 times; Saltus step phase place can be arranged, and scope is [0,360 °]; Be complete saltus step in 10ms in half cycle; High pressure duration the longest 6000ms, and can arrange arbitrarily in units of ms on backstage.Its operating process can be: backstage set amount (leaping voltage value, high pressure bound-time, saltus step slope) is sent to slave computer interface function according to communication protocol, is completed the isolation of variable by interface function; Saltus step mark is sent to slave computer interface function according to communications protocol, is completed the isolation of variable by interface function; By saltus step slope set amount, leaping voltage value is decomposed into added value, according to 1ms timing, saltus step amount is increased on voltage target vector d axle component, and start time rolling counters forward; After gate time arrives, voltage target vector d axle component is recovered;
Thus, by using this online testing device 1 as the bridge between public electric wire net 2 and wind energy generating plant 3, when it can to ensure wind energy generating plant 3 to public electric wire net 2 normal power supply, can detect this wind energy generating plant 3, meanwhile, in the process that this online testing device 1 normally works, sharing control is carried out to each double-fed PWM converter of this online testing device 1, thus effectively ensure that the normal work of this online testing device 1, and realize responding rapidly.
Fig. 4 shows the flow process of the on-line testing method of wind energy generating plant of the present invention, and the method flow process is based on the system architecture shown in Fig. 1, and detailed process is as follows:
S11: when this online testing device 1 powers on, one of them determining multiple double-fed PWM converter 11 is main process equipment, and remaining double-fed PWM converter 11 is respectively slave devices; The deterministic process of its main process equipment can be: when this online testing device 1 powers on, each double-fed PWM converter 11 sends the pulse of a different length, and (pulse length is relevant to the numbering of double-fed PWM converter 11, and the pulse length that each double-fed PWM converter 11 exports is all different), thus compete out main process equipment by multiple double-fed PWM converter 11, preferably, double-fed PWM converter 11 the longest for the pulse length of output can be defined as main process equipment, and remaining double-fed PWM converter is slave devices respectively.Certainly, understandable, also can determine that one of them in multiple double-fed PWM converter 11 is for main process equipment by method for distinguishing, remaining be slave devices, if realization by a double-fed PWM converter as main control equipment.
S12: when each slave devices receive start-up command and can startup equipment time, each slave devices respectively to main process equipment send confirmation signal, to inform that main process equipment is ready.After main process equipment receives the confirmation signal of all slave devices transmission, control all slave devices and start output current simultaneously, and the size of current that each slave devices exports to main process equipment feedback, thus main process equipment can calculate the size of average current accordingly, and the size of average current is sent to slave devices, thus, slave devices can according to the size of average current, its current output current of continuous adjustment, the output current making this current is positioned at the error range preset of average current.Described main process equipment is used for the size of the output current of all slave devices feedbacks of real-time reception, to regulate the output current of all slave devices, thus carries out sharing control to described multiple double-fed PWM converter; Preferably, in specific works, when the current output current of any one slave devices is greater than default threshold value, main process equipment will control each slave devices and stop output current, namely quit work.This threshold value preset is that be connected to the thickness of the cable length of public electric wire net and cable to each double-fed PWM converter relevant.Preferably, this threshold value preset can be 50 peaces.
S13: when this online testing device 1 on-line checkingi wind energy generating plant 3, namely when main process equipment sends abnormal work signal to wind energy generating plant 3, such as, when main process equipment is to wind energy generating plant 3 output voltage high voltage transient skip signal or main process equipment to wind energy generating plant 3 harmonic signal, due to, the action of each slave devices saltus step cannot be completely the same, also needs main process equipment to perform sharing control to each slave devices.Now this main process equipment to the process that slave devices carries out sharing control can be: the duration that main process equipment sends abnormal work signal to wind energy generating plant is on average divided into multiple time period, each time period is one and regulates step-length, and the size of this adjustment step-length is relevant to the speed of voltage jump.In this process, when the current output current of some slave devices is positioned at [I-δ, I+ δ] scope outer time, main process equipment transmits control signal to this slave devices, use circulation D axle component to regulate inverter voltage given vector D axle component by this slave devices, and use circulation Q axle component to regulate the instantaneous step-length of inverter voltage, thus regulate its output current, make to be positioned in [I-δ, I+ δ] scope.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. an Online Transaction Processing for wind energy generating plant, comprises public electric wire net and wind energy generating plant, it is characterized in that, between described public electric wire net and wind energy generating plant, be provided with online testing device; Described online testing device comprises the multiple double-fed PWM converter be connected in parallel;
In the process of the described wind energy generating plant of arbitrary detection, one of them of described multiple double-fed PWM converter is main process equipment, and remaining double-fed PWM converter is slave devices respectively; Described main process equipment is used for the output current regulating each slave devices in real time, to carry out sharing control, and in the process to described wind energy generating plant output abnormality working signal, in each default adjustment step-length, regulate the instantaneous step-length of inverter voltage, in each default adjustment step-length, the instantaneous step-length of inverter voltage is regulated to be specially: in each default adjustment step-length, controlling each slave devices uses circulation D axle component to regulate inverter voltage given vector D axle component, and uses circulation Q axle component to regulate the instantaneous step-length of inverter voltage.
2. the Online Transaction Processing of wind energy generating plant according to claim 1, is characterized in that, each slave devices passes through the voltage and the frequency that detect respective bypass source, to determine circulation D axle component and circulation Q axle component; Or, in the process of each communicating interrupt of main process equipment, directly by communication assignment, determine circulation D axle component and the circulation Q axle component of each slave devices.
3. the Online Transaction Processing of wind energy generating plant according to claim 1, it is characterized in that, described main process equipment is used for the size of the output current of all slave devices feedbacks of real-time reception, to regulate the output current of all slave devices, thus sharing control is carried out to described multiple double-fed PWM converter; Wherein, when the output current of at least one slave devices is greater than default threshold value, stop all slave devices output currents.
4. the Online Transaction Processing of wind energy generating plant according to claim 1, is characterized in that, described abnormal work signal is voltage transient high pressure skip signal or harmonic signal.
5. the Online Transaction Processing of wind energy generating plant according to claim 1, is characterized in that, when system electrification, each double-fed PWM converter sends the pulse signal of different length respectively; Described main process equipment is the longest double-fed PWM converter of pulse signal exported.
6. an online testing device, for being connected between public electric wire net and wind energy generating plant to carry out on-line checkingi to described wind energy generating plant, is characterized in that, comprise the multiple double-fed PWM current transformers be connected in parallel;
In the process of the described wind energy generating plant of arbitrary detection, one of them of described multiple double-fed PWM converter is main process equipment, and remaining double-fed PWM converter is slave devices respectively; Described main process equipment is used for the output current regulating each slave devices in real time, to carry out sharing control, and when to described wind energy generating plant output abnormality working signal, in each default adjustment step-length, regulates the instantaneous step-length of inverter voltage; In each default adjustment step-length, the instantaneous step-length of inverter voltage is regulated to be specially: in each default adjustment step-length, controlling each slave devices uses circulation D axle component to regulate inverter voltage given vector D axle component, and uses circulation Q axle component to regulate the instantaneous step-length of inverter voltage.
7. online testing device according to claim 6, is characterized in that, each slave devices passes through the voltage and the frequency that detect respective bypass source, to determine circulation D axle component and circulation Q axle component; Or, in the process of each communicating interrupt of main process equipment, directly by communication assignment, determine circulation D axle component and the circulation Q axle component of each slave devices.
8. online testing device according to claim 6, it is characterized in that, described main process equipment is used for the size of the output current of all slave devices feedbacks of real-time reception, to regulate the output current of all slave devices, thus carries out sharing control to described multiple double-fed PWM converter; Wherein, when the output current of at least one slave devices is greater than default threshold value, the output current of all slave devices is stopped.
9. online testing device according to claim 6, is characterized in that, described abnormal work signal is voltage transient high pressure skip signal or harmonic signal.
10. the on-line testing method of a wind energy generating plant, it is characterized in that, use online testing device to be connected between public electric wire net and wind energy generating plant, to carry out on-line checkingi to described wind energy generating plant, described online testing device comprises the multiple double-fed PWM converter be connected in parallel; Said method comprising the steps of:
When powering on, one of them determining described multiple double-fed PWM converter is main process equipment, and remaining double-fed PWM converter is respectively slave devices;
Described main process equipment is used for the size of the output current of all slave devices feedbacks of real-time reception, to regulate the output current of all slave devices, thus carries out sharing control to described multiple double-fed PWM converter;
In the process to described wind energy generating plant output abnormality working signal, in each default adjustment step-length, regulate the instantaneous step-length of inverter voltage, in each default adjustment step-length, the instantaneous step-length of inverter voltage is regulated to be specially: in each default adjustment step-length, controlling each slave devices uses circulation D axle component to regulate inverter voltage given vector D axle component, and uses circulation Q axle component to regulate the instantaneous step-length of inverter voltage.
The on-line testing method of 11. wind energy generating plants according to claim 10, is characterized in that, each slave devices passes through the voltage and the frequency that detect respective bypass source, to determine circulation D axle component and circulation Q axle component; Or, in the process of each communicating interrupt of main process equipment, directly by communication assignment, determine circulation D axle component and the circulation Q axle component of each slave devices.
The on-line testing method of 12. wind energy generating plants according to claim 10, is characterized in that, when the output current of at least one slave devices is greater than default threshold value, stops all slave devices output currents.
The on-line testing method of 13. wind energy generating plants according to claim 10, is characterized in that, described abnormal work signal is voltage transient high pressure skip signal or harmonic signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110302146.8A CN103033694B (en) | 2011-09-28 | 2011-09-28 | Online test system, device and method of wind power generation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110302146.8A CN103033694B (en) | 2011-09-28 | 2011-09-28 | Online test system, device and method of wind power generation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103033694A CN103033694A (en) | 2013-04-10 |
| CN103033694B true CN103033694B (en) | 2015-07-22 |
Family
ID=48020791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110302146.8A Active CN103033694B (en) | 2011-09-28 | 2011-09-28 | Online test system, device and method of wind power generation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103033694B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793091A (en) * | 2015-05-13 | 2015-07-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Site test and evaluation method of doubly-fed converter |
| CN109995134B (en) * | 2019-04-29 | 2021-04-27 | 漳州科华技术有限责任公司 | Power supply system and current equalizing system and method of independent bypass of power supply system |
| JP2021190013A (en) * | 2020-06-04 | 2021-12-13 | 株式会社東海理化電機製作所 | Controller, program, and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040026929A1 (en) * | 2000-05-23 | 2004-02-12 | Vestas Wind Systems A/S | Variable speed wind turbine having a matrix converter |
| CN101013817A (en) * | 2007-02-07 | 2007-08-08 | 哈尔滨九洲电气股份有限公司 | Full power combination converter for megawatt wind power generation |
-
2011
- 2011-09-28 CN CN201110302146.8A patent/CN103033694B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040026929A1 (en) * | 2000-05-23 | 2004-02-12 | Vestas Wind Systems A/S | Variable speed wind turbine having a matrix converter |
| CN101013817A (en) * | 2007-02-07 | 2007-08-08 | 哈尔滨九洲电气股份有限公司 | Full power combination converter for megawatt wind power generation |
Non-Patent Citations (4)
| Title |
|---|
| Design and Implementation of DC-Bus System Module for Parallel Integrated Sustainable Energy Conversion Systems;Mahmoud M. Amin等;《Power and Energy Society General Meeting 2011 IEEE》;20110729;第3页右栏最后一段 * |
| Hybrid Control of Multiple Inverters in an Island-Mode Distribution System;J. Liang等;《Power Electronics Specialist Conference, 2003. PESC "03. 2003 IEEE 34th Annual》;20030619;第1卷;第61-66页 * |
| 基于现场总线的大功率风电变流器控制系统研究;徐明明;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑 》;20110415(第4期);第10-51页 * |
| 采用参考电压调节的并联逆变器控制技术;魏永清等;《电机与控制学报》;20110228;第15卷(第2期);第84-88页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103033694A (en) | 2013-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018014450A1 (en) | Rt-lab-based real microgrid operation dynamic simulation testing platform | |
| CN102983593B (en) | Seamless handover control method for microgrid based on intelligent switch | |
| CN103414182B (en) | A kind of flexible direct current power transmission system is from the smooth-switching method transferring islet operation side by side to | |
| CN109980672B (en) | Method and system for determining minimum startup number of extra-high voltage direct current (UHVDC) sending ends | |
| CN104578187A (en) | Multi-end flexible direct current power transmission system level coordination control device | |
| EP2607912B1 (en) | Low-voltage testing device for high-voltage frequency converter of serial superposition voltage type | |
| CN103616584B (en) | The adjustment method of a kind of frequency converter test platform and frequency converter test platform | |
| CN203967764U (en) | The double mode current transformer of a kind of wind turbine generator | |
| CN106199428B (en) | High-voltage high-power double-fed wind driven generator test system and measurement and control system thereof | |
| CN107482678B (en) | A kind of double-fed fan motor field is through soft direct join net system failure traversing control method | |
| CN104934971A (en) | Dynamic section control method based on power flow transfer ratio | |
| CN103368203A (en) | Photovoltaic reverse-power closed loop control system and method | |
| CN102244466A (en) | Voltage sag generator | |
| CN104065104A (en) | Micro grid rapid grid connection method based on three-phase independent regulation | |
| CN111459048A (en) | SVG control hardware-in-loop simulation platform and simulation method | |
| CN103033694B (en) | Online test system, device and method of wind power generation equipment | |
| CN105183999A (en) | Method for calculating maximum short circuit current of electric power system with photovoltaic power station | |
| CN101566672A (en) | Fall-down experimental method of simulating power grid | |
| CN109800455A (en) | A kind of idle characteristic Simulation method and apparatus of double-fed fan motor unit transient state | |
| CN104111406A (en) | Frequency feedback disturbance-based island detection method and apparatus | |
| CN104298121B (en) | The dual feedback wind power generation system simulation experiment platform of Control-oriented technical research | |
| CN201829955U (en) | Dynamic voltage stabilizer for helping wind power generator to implement low voltage ride-through | |
| CN105869507A (en) | Megawatt-grade hydroelectric generation simulation system | |
| CN102818953B (en) | Wind condition simulation system and method for realizing wind condition simulation system on wind turbine generator test bed | |
| CN103501010B (en) | The wind energy turbine set reactive power support method of a kind of pair of Hysteresis control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park B2 building 1-4 floor, building 6-10 Patentee after: Vitamin Technology Co., Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee before: Aimosheng Network Energy Source Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220124 Address after: 710000 room 804, 8th floor, building 14, West Yungu phase I, Fengxi new town, Xixian new area, Xi'an, Shaanxi Patentee after: Weidi new energy Co.,Ltd. Address before: 518055 1-4, 6-10 floor, B2 building, Nanshan Zhiyuan, 1001 Nanshan District Xue Yuan Avenue, Shenzhen, Guangdong. Patentee before: VERTIV TECH Co.,Ltd. |
|
| TR01 | Transfer of patent right |