CN105203865A - Working method of on-line test system of distributed power-supply grid-connected inverter and capacitor - Google Patents
Working method of on-line test system of distributed power-supply grid-connected inverter and capacitor Download PDFInfo
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- CN105203865A CN105203865A CN201410479833.0A CN201410479833A CN105203865A CN 105203865 A CN105203865 A CN 105203865A CN 201410479833 A CN201410479833 A CN 201410479833A CN 105203865 A CN105203865 A CN 105203865A
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- measured capacitance
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- 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
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
Abstract
The invention relates to a working method of an on-line test system of a distributed power-supply grid-connected inverter and a capacitor. The on-line test system comprises an H-bridge inverter. The H-bridge inverter is controlled by a control unit. The on-line test system working comprises the following steps that the control unit establishes input and output voltage databases of the H-bridge inverter; through comparing collected input and output voltages of the H-bridge inverter with input and output voltages of the H-bridge inverter in the databases, whether the H-bridge inverter is damaged is determined.
Description
Technical field
The present invention relates to a kind of field of power electronics, particularly relate to the method for work of the Online Transaction Processing of a kind of distributed electrical source grid-connected inverter and electric capacity.
Background technology
Along with original more distributed generation systems access electrical network, various countries' grid company all proposes new strict demand to distributed generation system, namely to require when electrical grid failure distributed generation system can continue to be incorporated into the power networks and send meritorious or idlely to support electrical network.Therefore distributed generation system all will carry out the test of electrical network adaptive faculty before grid-connected, but is to provide the three phase sine voltage of standard due to the target of electrical network, and various forms of electric network fault is uncommon.Therefore, when testing distributed generation system, being difficult to reproduction by means of only electrical network and being out of order situation, needing special equipment or instrument to simulate above-mentioned fault.
Summary of the invention
The object of this invention is to provide the method for work of the Online Transaction Processing of a kind of distributed electrical source grid-connected inverter and electric capacity, which solve the technical matters of H bridge inverter being carried out to on-line checkingi.
In order to solve the problems of the technologies described above, the invention provides the method for work of the Online Transaction Processing of a kind of distributed electrical source grid-connected inverter and electric capacity, wherein, described Online Transaction Processing comprises: H bridge inverter, and this H bridge inverter is controlled by a control module; The method of work of described Online Transaction Processing comprises: described control module sets up input, the output voltage database of described H bridge inverter, inputted with this H bridge inverter in database by the input, the output voltage that gather described H bridge inverter, compared with output voltage, to judge whether H electrical bridge inverter damages.
Further, described Online Transaction Processing also comprises: for carrying out the capacity measurement unit of electric capacity on-line checkingi, the method for work of described capacity measurement unit comprises the steps:
Step one: the voltage vector gathering measured capacitance two ends, and this voltage vector is decomposited fundamental voltage
with nth harmonic component of voltage
, that is, the superimposed voltage at described measured capacitance two ends
, namely
, calculate the effective value U of this superimposed voltage, the effective value U of fundamental voltage
0.
Step 2: set up electric capacity sound pressure level database, this database comprises: all types of electric capacity only have the effective value of each first-harmonic distinguish corresponding electric capacity sound pressure level.
Preset measured capacitance type, rated capacitance C
0, according to the effective value U of measured capacitance type and current fundamental voltage
0corresponding capacitance sound pressure level is obtained from described electric capacity sound pressure level database
.
Gather the voice signal that measured capacitance produces, to obtain corresponding capacitance sound pressure level
, pass through formula
, calculate the actual capacitance C of measured capacitance
x.
Step 3: according to the actual capacitance C of measured capacitance
xelectric capacity predictor formula is set up, namely with the effective value U of superimposed voltage
; Wherein, C be measured capacitance damage time extreme capacitance values, t is capacitance damage expeced time, k be in the unit time measured capacitance at the effective value U of current fundamental voltage
0the electric capacitance change coefficient of lower correspondence, that is,
, wherein, C
x1and C
x2for electric capacity initial value and the final value of measured capacitance in the unit time.
Set described extreme capacitance values C, derived the computing formula of capacitance damage t expeced time by described electric capacity predictor formula, namely
, to calculate the expeced time that measured capacitance is damaged.
Further, the effective value U of described superimposed voltage passes through fundamental voltage
with nth harmonic component of voltage
effective value quadratic sum square root obtain.
Further, described nth harmonic component of voltage
middle n gets 5.
Technique scheme of the present invention has the following advantages compared to existing technology: (1) the present invention sets up input, the output voltage database of described H bridge inverter by described control module, inputted with this H bridge inverter in database by the input, the output voltage that gather described H bridge inverter, compared with output voltage, to judge whether H electrical bridge inverter damages, the method has simple in real time, the advantage of good reliability; (2) the present invention combines ultrasonic sensor and High Frequency Current Sensor, achieves the on-line checkingi without the need to powered-down; (3) the present invention gathers the electric capacity sound pressure level of measured capacitance generation by ultrasonic sensor
; High Frequency Current Sensor gathers the magnitude of voltage at electric capacity two ends, sets up electric capacity predictor formula, utilizes the life-span of this formula to measured capacitance to predict, judge that the electric capacity life-span is more forward-looking than traditional only detection capacitance present actual capacitance.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structured flowchart of described Online Transaction Processing;
Fig. 2 is the theory diagram of described capacity measurement unit;
Fig. 3 is the process flow diagram of the method for work of described capacity measurement unit.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment also with reference to accompanying drawing, the present invention is described in more detail.Should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
Embodiment 1
As shown in Figure 1, the method for work of the Online Transaction Processing of a kind of distributed electrical source grid-connected inverter and electric capacity, wherein, described Online Transaction Processing comprises: H bridge inverter, and this H bridge inverter is controlled by a control module; The method of work of described Online Transaction Processing comprises: described control module sets up input, the output voltage database of described H bridge inverter, inputted with this H bridge inverter in database by the input, the output voltage that gather described H bridge inverter, compared with output voltage, to judge whether H electrical bridge inverter damages.
The present invention is by building three-phase H bridge inverter with IGBT switching technique, and control module is disclosed to the technical scheme that H electrical bridge carries out corresponding control in lot of documents, such as: EMS energy management system can realize above-mentioned controlling functions.
Described control module sets up the input of described H bridge inverter, the step of output voltage database comprises: sample to obtain standard value by the input to all types of H bridge inverters, output voltage, namely described input, output voltage database is set up, when control module detects that tested H bridge inverter is under present input voltage, output voltage in its output voltage and database is not inconsistent, and namely judges this H bridge inverter fault.
Input, output voltage are gathered, can be realized by step-down transformer, A/D module, processor unit, belong to prior art.
Embodiment 2
As shown in Figure 2, the described Online Transaction Processing on embodiment 1 basis also comprises: for carrying out the capacity measurement unit of electric capacity on-line checkingi, this capacity measurement unit comprises:
Ultrasonic sensor, for gathering the voice signal that measured capacitance produces, to obtain corresponding capacitance sound pressure level
.
High Frequency Current Sensor, for gathering the voltage vector at electric capacity two ends.
Described ultrasonic sensor, High Frequency Current Sensor are connected with data processing control units respectively by corresponding data conditioning unit; That is, ultrasonic sensor, High Frequency Current Sensor are connected with numerical control processing and control element (PCE) respectively by first, second data conditioning unit, and first, second data conditioning unit can adopt a certain proportion of amplifier be made up of integrated operational amplifier.
Described data processing and control subelement, comprising:
Electric capacity superimposed voltage computing module, is suitable for the voltage vector of acquisition to decomposite fundamental voltage
with nth harmonic component of voltage
, that is, the superimposed voltage at described measured capacitance two ends
, namely
, calculate the effective value U of this superimposed voltage, calculate the effective value U of fundamental voltage simultaneously
0; Wherein, the method obtaining harmonic wave and first-harmonic is obtained by FFT computing; the method is existing a large amount of description in the prior art document, such as: Li Jiasheng, bavin generation outstanding person is published in existing associated description in the paper " electric energy quality harmonic m-Acetyl chlorophosphonazo on-line quick detection technique study " on periodical " protecting electrical power system and control " in September, 2009.
Electric capacity computing module, is suitable for according to presetting measured capacitance type, rated capacitance C
0, obtain the measured capacitance electric capacity sound pressure level corresponding with only there being the effective value of each first-harmonic by described electric capacity sound pressure level database
; By the voice signal that measured capacitance produces, to obtain corresponding capacitance sound pressure level
, pass through formula
, calculate the actual capacitance C of measured capacitance
x; Wherein, described electric capacity sound pressure level
obtained by the mode setting up electric capacity sound pressure level database, namely all types of electric capacity electric capacity sound pressure level corresponding with the effective value of each fundamental voltage is stored in this database, by the type of default input measured capacitance, and calculate obtain the effective value of current fundamental voltage, obtain electric capacity sound pressure level data corresponding to this electric capacity from electric capacity sound pressure level database lookup; Calculate corresponding capacitance sound pressure level
method at paper document: be published in being disclosed based in the capacitor noise level calculation method of vibration signal of " electronic technology journal " in June, 2010.
Measured capacitance life-span computing module, is suitable for the actual capacitance C according to measured capacitance
xelectric capacity predictor formula is set up, namely with the effective value U of superimposed voltage
, wherein, C be measured capacitance damage time extreme capacitance values, t is capacitance damage expeced time, k be in the unit time measured capacitance at the effective value U of current fundamental voltage
0the electric capacitance change coefficient of lower correspondence, that is,
, wherein C
x1and C
x2for the effective value U at current fundamental voltage
0under unit interval in the electric capacity initial value of measured capacitance and final value, the electric capacitance change coefficient data storehouse that electric capacitance change coefficient k can be set up through actual measurement under the effective value of each fundamental voltage according to all types of electric capacity obtains, this electric capacitance change coefficient data storehouse is searched according to the effective value of electric capacity model and corresponding fundamental voltage and is obtained electric capacitance change coefficient k corresponding to this electric capacity, its concrete acquisition methods: the electric capacity initial value of all types of electric capacity measured under the effective value of various fundamental voltage within a period of time and final value, converse electric capacity initial value corresponding in the unit interval and final value again, according to the type of default measured capacitance, and calculate obtain the effective value of current fundamental voltage, that searches from electric capacitance change coefficient data storehouse goes out electric capacitance change coefficient k corresponding to this electric capacity, for the ease of calculating, if the variable quantity of electric capacity within the unit interval is linear, and the computing formula of capacitance damage t expeced time is derived by described electric capacity predictor formula, namely
, set described extreme capacitance values C, to calculate the expeced time that measured capacitance is damaged.
Described superimposed voltage
effective value U computing method comprise: fundamental voltage
with nth harmonic component of voltage
the square root of effective value quadratic sum.Described nth harmonic component of voltage
middle n gets 5.
Described data processing and control subelement is realized by FPGA module, that is, fpga chip XC6SLX9-TQG144.
Table 1 is experimental data and actual measurement comparing result one, and the electric capacitor of table 1 selects huge magnificent electric capacitor BSMJ-0.415-15-315Kvar, and setting described extreme capacitance values C is 40% of former capacity.
Table 1 experimental data and the actual measurement table of comparisons
Wherein, when calculating electric capacitance change coefficient k, the unit interval is 24 hours, and namely under 525V first-harmonic effective value, the capacitance change of a day is 0.08uF through actual measurement.
Table 2 is experimental data and actual measurement comparing result two, and the electric capacitor of table 2 selects Shanghai Wei Sikang electric capacitor BSMJ0.4-15-3 and electric capacity BSMJ0.45-15-3, and setting described extreme capacitance values C is 40% of former capacity.
Table 2 experimental data and the actual measurement table of comparisons
Wherein, when calculating electric capacitance change coefficient k, the unit interval is 24 hours, and namely under 450V first-harmonic effective value, the capacitance change of a day is 0.12uF through actual measurement; Or under 415V first-harmonic effective value, the capacitance change of a day is through surveying as 0.11uF.
Table 3 is experimental data and actual measurement comparing result three, and the electric capacitor of table 3 selects De Lixi self-healing low-voltage capacitor the parallel power condenser BSMJS0.420-3BSMJ, and setting described extreme capacitance values C is 40% of former capacity.
Table 3 experimental data and the actual measurement table of comparisons
Wherein, when calculating electric capacitance change coefficient k, the unit interval is 24 hours, and namely under 380V first-harmonic effective value, the capacitance change of a day is 0.063uF through actual measurement.
In the present invention, first-harmonic effective value also can think voltage effective value ideally.
As can be seen from table 1 to table 3, it is effective that electric capacity on-line checkingi of the present invention estimates electric capacity excess time, have the advantages that accuracy is high, close to electric capacity actual capacitance close to extreme capacitance values C during capacitance damage time, the result of settling accounts is more close to measured result.Therefore, described Online Transaction Processing can complete necessary electric capacity on-line checkingi, and it detects data is very close with real data, may be used for estimating electric capacity serviceable life completely.
Embodiment 3
As shown in Figure 3, on embodiment 2 basis, provide the method for work of described Online Transaction Processing, wherein, described Online Transaction Processing also comprises: for carrying out the capacity measurement unit of electric capacity on-line checkingi, the method for work of described capacity measurement unit comprises the steps:
Step S100, obtains the superimposed voltage at measured capacitance two ends, the effective value of fundamental voltage.
Gather the voltage vector at measured capacitance two ends, and this voltage vector is decomposited fundamental voltage
with nth harmonic component of voltage
, that is, the superimposed voltage at described measured capacitance two ends
, namely
, calculate the effective value U of this superimposed voltage, calculate the effective value U of fundamental voltage simultaneously
0; Wherein, the method obtaining harmonic wave and first-harmonic is obtained by FFT computing; the method is existing a large amount of description in the prior art document, such as: Li Jiasheng, bavin generation outstanding person is published in existing associated description in the paper " electric energy quality harmonic m-Acetyl chlorophosphonazo on-line quick detection technique study " on periodical " protecting electrical power system and control " in September, 2009.In the present invention, electric capacity is electric capacitor.
Step S200, obtains the actual capacitance of measured capacitance.
Set up electric capacity sound pressure level database, this database comprises: all types of electric capacity only have the effective value of each first-harmonic distinguish corresponding electric capacity sound pressure level.
Preset measured capacitance type, rated capacitance C
0, obtain the effective value U of measured capacitance at current fundamental voltage by described electric capacity sound pressure level database
0the electric capacity sound pressure level of lower correspondence
; Gather the voice signal that measured capacitance produces, to obtain corresponding capacitance sound pressure level
, pass through formula
, calculate the actual capacitance C of measured capacitance
x; Wherein, described electric capacity sound pressure level
obtained by the mode setting up electric capacity sound pressure level database, namely the electric capacity sound pressure level that all types of electric capacity is corresponding with only there being the effective value of each fundamental voltage is stored in this database, by the type of default input measured capacitance, and calculate obtain the effective value of current fundamental voltage, obtain electric capacity sound pressure level data corresponding to this electric capacity from electric capacity sound pressure level database lookup; Wherein, each fundamental voltage is only had to refer to without harmonic voltage; Calculate corresponding capacitance sound pressure level
method at paper document: be published in being disclosed based in the capacitor noise level calculation method of vibration signal of " electronic technology journal " in June, 2010.
Step S300, by setting up electric capacity predictor formula, calculates the expeced time that measured capacitance is damaged.
Step S310, sets up electric capacity predictor formula and electric capacitance change coefficient k computing formula.
According to the actual capacitance C of measured capacitance
xelectric capacity predictor formula is set up, namely with the effective value U of superimposed voltage
, wherein, C be measured capacitance damage time extreme capacitance values, t is capacitance damage expeced time, k be in the unit time measured capacitance at the effective value U of current fundamental voltage
0the electric capacitance change coefficient of lower correspondence, that is,
, C
x1and C
x2for the effective value U at current fundamental voltage
0under unit interval in the electric capacity initial value of measured capacitance and final value, electric capacitance change coefficient k can obtain through surveying the electric capacitance change coefficient data storehouse set up with only there being the effective value of each fundamental voltage according to all types of electric capacity, this electric capacitance change coefficient data storehouse is searched according to the effective value of electric capacity model and corresponding fundamental voltage and is obtained electric capacitance change coefficient k corresponding to this electric capacity, its concrete acquisition methods: the electric capacity initial value of all types of electric capacity measured under the effective value of various fundamental voltage within a period of time and final value, converse electric capacity initial value corresponding in the unit interval and final value again, according to the type of default measured capacitance, and calculate obtain the effective value of current fundamental voltage, that searches from electric capacitance change coefficient data storehouse goes out electric capacitance change coefficient k corresponding to this electric capacity, for the ease of calculating, if the variable quantity of electric capacity within the unit interval is linear.
Step S320, calculates the expeced time that measured capacitance is damaged.
The computing formula of capacitance damage t expeced time is derived, namely by described electric capacity predictor formula
, set described extreme capacitance values C, to calculate the expeced time that measured capacitance is damaged, i.e. the serviceable life of measured capacitance; Wherein, extreme capacitance values C, by artificially setting, is also the threshold value that electric capacity gives a warning, and is convenient to carry out online evaluation to electric capacity.
Further, the effective value U of described superimposed voltage passes through fundamental voltage
with nth harmonic component of voltage
effective value quadratic sum square root obtain.
Further, consider that harmonic energy distributes, described nth harmonic component of voltage
middle n gets 5.
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (4)
1. a method of work for the Online Transaction Processing of distributed electrical source grid-connected inverter and electric capacity, is characterized in that, described Online Transaction Processing comprises: H bridge inverter, and this H bridge inverter is controlled by a control module;
The method of work of described Online Transaction Processing comprises: described control module sets up input, the output voltage database of described H bridge inverter, inputted with this H bridge inverter in database by the input, the output voltage that gather described H bridge inverter, compared with output voltage, to judge whether H electrical bridge inverter damages.
2. the method for work of Online Transaction Processing according to claim 1, it is characterized in that, the method of work of described Online Transaction Processing also comprises: for carrying out the capacity measurement unit of electric capacity on-line checkingi, the method for work of described capacity measurement unit comprises the steps:
Step one: the voltage vector gathering measured capacitance two ends, and this voltage vector is decomposited fundamental voltage
with nth harmonic component of voltage
, the superimposed voltage at described measured capacitance two ends can be drawn
, namely
, then calculate the effective value U of this superimposed voltage, the effective value U of fundamental voltage
0;
Step 2: set up electric capacity sound pressure level database, this database comprises: the electric capacity sound pressure level corresponding respectively with only there being the effective value of each first-harmonic of all types of electric capacity;
Preset measured capacitance type, rated capacitance C
0, according to the effective value U of measured capacitance type and current fundamental voltage
0corresponding capacitance sound pressure level is obtained from described electric capacity sound pressure level database
;
Gather the voice signal that measured capacitance produces, to obtain corresponding capacitance sound pressure level
, pass through formula
, calculate the actual capacitance C of measured capacitance
x;
Step 3: according to the actual capacitance C of measured capacitance
xelectric capacity predictor formula is set up, namely with the effective value U of superimposed voltage
; Wherein, C be measured capacitance damage time extreme capacitance values, t is capacitance damage expeced time, k be in the unit time measured capacitance at the effective value U of current fundamental voltage
0the electric capacitance change coefficient of lower correspondence, that is,
, wherein, C
x1and C
x2for electric capacity initial value and the final value of measured capacitance in the unit time;
Set described extreme capacitance values C, derived the computing formula of capacitance damage t expeced time by described electric capacity predictor formula, namely
, to calculate the expeced time that measured capacitance is damaged.
3. the method for work of Online Transaction Processing according to claim 2, is characterized in that, the effective value U of described superimposed voltage passes through fundamental voltage
with nth harmonic component of voltage
effective value quadratic sum square root obtain.
4. the method for work of Online Transaction Processing according to claim 3, is characterized in that, described nth harmonic component of voltage
middle n gets 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410479833.0A CN105203865B (en) | 2014-06-11 | 2014-09-18 | The method of work of the Online Transaction Processing of distributed electrical source grid-connected inverter and electric capacity |
| CN201710794720.3A CN107589324B (en) | 2014-06-11 | 2014-09-18 | Online testing system for grid-connected inverter and capacitor |
| CN201710794765.0A CN107561410B (en) | 2014-06-11 | 2014-09-18 | Online testing system for distributed power supply grid-connected inverter and capacitor |
| CN201710794762.7A CN107436415B (en) | 2014-06-11 | 2014-09-18 | Working method of online testing system for distributed power grid-connected inverter and capacitor |
| CN201710819231.9A CN107621582B (en) | 2014-06-11 | 2014-09-18 | Online testing system for grid-connected inverter and capacitor and working method thereof |
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| CN201410256883 | 2014-06-11 | ||
| CN2014102568832 | 2014-06-11 | ||
| CN201410479833.0A CN105203865B (en) | 2014-06-11 | 2014-09-18 | The method of work of the Online Transaction Processing of distributed electrical source grid-connected inverter and electric capacity |
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| CN201710794720.3A Division CN107589324B (en) | 2014-06-11 | 2014-09-18 | Online testing system for grid-connected inverter and capacitor |
| CN201710794762.7A Division CN107436415B (en) | 2014-06-11 | 2014-09-18 | Working method of online testing system for distributed power grid-connected inverter and capacitor |
| CN201710819231.9A Division CN107621582B (en) | 2014-06-11 | 2014-09-18 | Online testing system for grid-connected inverter and capacitor and working method thereof |
| CN201710794765.0A Division CN107561410B (en) | 2014-06-11 | 2014-09-18 | Online testing system for distributed power supply grid-connected inverter and capacitor |
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| CN201710794720.3A Expired - Fee Related CN107589324B (en) | 2014-06-11 | 2014-09-18 | Online testing system for grid-connected inverter and capacitor |
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| CN109596894A (en) * | 2019-01-02 | 2019-04-09 | 厦门科华恒盛股份有限公司 | Ac capacitor on-line monitoring method and device |
| CN112564287A (en) * | 2020-12-12 | 2021-03-26 | 国网新源控股有限公司回龙分公司 | Simple system for monitoring running state of power equipment |
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| CN107436415B (en) * | 2014-06-11 | 2020-12-08 | 合肥布诺太阳能科技有限公司 | Working method of online testing system for distributed power grid-connected inverter and capacitor |
| CN109596875B (en) * | 2018-12-04 | 2023-08-18 | 国网湖北省电力有限公司电力科学研究院 | Method and device for detecting waveform abnormality of output voltage of H-bridge power unit |
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| CN112564287A (en) * | 2020-12-12 | 2021-03-26 | 国网新源控股有限公司回龙分公司 | Simple system for monitoring running state of power equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105203865B (en) | 2017-10-27 |
| CN107561410B (en) | 2021-04-27 |
| CN107436415A (en) | 2017-12-05 |
| CN107621582A (en) | 2018-01-23 |
| CN107436415B (en) | 2020-12-08 |
| CN107589324A (en) | 2018-01-16 |
| CN107621582B (en) | 2019-12-24 |
| CN107561410A (en) | 2018-01-09 |
| CN107589324B (en) | 2019-12-27 |
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