CN109494075A - A kind of high-voltage capacitor device inhibiting TRV - Google Patents
A kind of high-voltage capacitor device inhibiting TRV Download PDFInfo
- Publication number
- CN109494075A CN109494075A CN201811567302.1A CN201811567302A CN109494075A CN 109494075 A CN109494075 A CN 109494075A CN 201811567302 A CN201811567302 A CN 201811567302A CN 109494075 A CN109494075 A CN 109494075A
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- Prior art keywords
- capacitor
- voltage
- trv
- inhibiting
- cell
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- 239000003990 capacitor Substances 0.000 title claims abstract description 180
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 229910052573 porcelain Inorganic materials 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 239000002775 capsule Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
- H01G4/385—Single unit multiple capacitors, e.g. dual capacitor in one coil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The present invention relates to a kind of high-voltage capacitor devices for inhibiting TRV, including CbCapacitor, CeCapacitor and pony sill；CeCapacitor is mounted on pony sill, CbCapacitor stack is mounted in CeThe high-voltage capacitor that total capacitance is equal to the sum of two capacitors is formed behind the top of capacitor；In CbIt is respectively equipped with the connecting pin that can be used as high-voltage capacitor input terminal or output end at the top and bottom of capacitor, the low-pressure end of high-voltage capacitor is equipped on pony sill；CbCapacitor and CeCapacitor is formed in parallel by 3~10 column capacitive posts, CbCapacitor and CeThe capacitive post of capacitor is circular layout up and down respectively, and CbCapacitor or CeThe axial direction of the capacitive post of capacitor is intersected in same level on same circle, each circle and CbCapacitor or CeThe intersection point of the capacitive post axial direction of capacitor connects into regular polygon.The beneficial effects of the present invention are: rated capacity is big, small in size, occupied area is small；Easy-to-connect；It is at low cost；Radio interference voltage (RIV) is low；Shock strength is high.
Description
Technical field
The present invention relates to capacitor areas, and in particular to a kind of high-voltage capacitor device for inhibiting TRV.
Background technique
In recent years, with China's rapid development of economy, the electricity needs of each place is increasing.To meet electric power need
It asks, China has built a plurality of extra-high voltage alternating current-direct current transmission line of electricity, and each ultra-high-tension power transmission line conveying load also close to transporting at full capacity
Row.After power grid transmission capacity increases, system short-circuit electric current can be greatly increased, by when generating system ground fault, system short-circuit
Electric current may be more than that the rupturing capacity of breaker causes breaker to cut-off failure.Solve this problem, most straightforward approach
It is to be transformed to original power engineering, increases the rupturing capacity of breaker, but this method is limited to the technical bottleneck of breaker,
Whole cost of investment is also higher, therefore is not a kind of cost-effective mode, and uses current-limiting reactor and the mating suppression of capacitor
The method of short circuit current processed is very cost-effective.
In order to limit system short-circuit electric current, current-limiting reactor can be installed additional in transmission line of electricity, but because of current-limiting reactor category
In induction equipment, bring another question is exactly the promotion of transient recovery voltage (TRV) steepness, this is unfavorable for breaker
It normally cut-offs, it is therefore desirable to increase capacitor to reduce the steepness of transient recovery voltage.Install current limliting additional in ultra-high-tension power transmission line
It is a kind of very economical effective mode that the complexes of reactor and capacitor cooperation breaker, which carries out cut-offfing for short trouble,.
It installs complexes requirement of engineering additional and transformation is implemented to the substation to have put into operation, in order to make the control of TRV waveform to certain range, need
Want high-voltage capacitor that there is biggish rated capacity, this just determines that high-voltage capacitor needs more quantity in parallel, volume
Can be very big, cost can be very high.And at high cost, the key factor that the wide exactly engineering constraint of occupied area is implemented, this requires for
Engineering provides a kind of high-voltage capacitor for being used to inhibit TRV that cost is relatively low, occupied area is small.
Summary of the invention
In conclusion to overcome the shortcomings of existing technologies, technical problem to be solved by the invention is to provide a kind of inhibition
The high-voltage capacitor device of TRV, the device is by upper partition capacitance CbWith lower partition capacitance CeClosed assembly forms, and integral arrangement is at cylinder
Shape structure solves the problems, such as land occupation, cost and assembly.
The technical scheme to solve the above technical problems is that a kind of high-voltage capacitor device for inhibiting TRV, including
CbCapacitor, CeCapacitor and pony sill；The CeCapacitor is mounted on the pony sill, the CbCapacitor stack is mounted in institute
State CeTotal capacitance is formed behind the top of capacitor is equal to CbCapacitor and CeThe high-voltage capacitor of the sum of two capacitors of capacitor；
In the CbThe company that can be used as the high-voltage capacitor input terminal or output end is respectively equipped at the top and bottom of capacitor
End is connect, the low-pressure end of the high-voltage capacitor is equipped on the pony sill；The CbCapacitor and the CeCapacitor by~
Column capacitive post is formed in parallel, the CbCapacitor and the CeThe capacitive post of capacitor is circular layout up and down respectively, and the Cb
Capacitor or the CeThe axial direction of the capacitive post of capacitor is intersected in same level on same circle, each described circle with
The CbCapacitor or the CeThe intersection point of the capacitive post axial direction of capacitor connects into regular polygon.
The beneficial effects of the present invention are:
1, rated capacity is big, small in size, occupied area is small；
2、CbThe input terminal and output end of capacitor can be exchanged according to field connection, guarantee easy-to-connect；
3、CeCapacitor is used as capacitor to be used as C againbThe pillar of capacitor supports, and manufacturing cost is low；
4, high-voltage capacitor device surface electric field distribution is uniform, and radio interference voltage (RIV) is low；
Based on the above technical solution, the present invention can also be improved as follows:
Further, the diameter of a circle is 2~10 times of the capacitor column diameter, and the side length of the regular polygon is described
1.5~3 times of capacitor column diameter.
Further, capacitive post described in each column is formed by closed assembly above and below 3~7 layer capacitance units；In the CbCapacitor
The periphery of top layer's capacitor cell, interlayer capacitance unit and lowest level capacitor cell is respectively provided with a grading ring respectively, in institute
State CeTop layer's capacitor cell of capacitor is equipped with 1~2 grading ring.
Further, the grading ring is the discontinuous circular arc item composition of multistage, and each section of circular arc item passes through metalwork
Connect the corresponding capacitor cell.
Beneficial effect using above-mentioned further scheme is: reducing the generation of corona, and guarantees capacitor entire body electric field
It is evenly distributed.
Further, the CbThe capacitor cell of capacitor is the internal straight tube porcelain bushing shell structure for being equipped with fuse, the CeCapacitor
The capacitor cell of device is the internal up-small and down-big cone cylinder porcelain bushing shell structure for being equipped with fuse.
It further, further include fixing piece；The fixing piece connects the corresponding capacitive post and becomes the capacitive post
One entirety is to form the CbCapacitor or the CeCapacitor；The each layer capacitor cell or described in 1~3 layer
Capacitor cell is equipped with a fixing piece.
Further, the fixing piece includes framework and connection strap；The framework is in capacitor cell described in same layer and surrounds
Annulus inside, for connection all capacitor cells of same layer center radiate steel construction；The connection strap is nonmetallic
Material is made, connect the capacitor cell on the two neighboring capacitive post in same layer and make the corresponding capacitive post at
It is an entirety to form the CbCapacitor or the CeCapacitor.
Further, the framework is that more channel steels or thick steel plate are welded；One end of the channel steel or thick steel plate
Meet at and be formed together central point, the other end towards the central point to external radiation after connect same layer all capacitor lists
Member.
Beneficial effect using above-mentioned further scheme is: the capacitive post of high-voltage capacitor device by circumference connection and it is more
Side shape is connected and fixed, and shock strength is high.
Further, the voltage rating of the high-voltage capacitor be 220kV~1000kV, rated capacity be 10nF~
500nF。
Detailed description of the invention
Fig. 1 is positive structure diagram of the invention；
Fig. 2 is overlooking structure diagram of the invention；
Fig. 3 is CbThe structural schematic diagram of the capacitor cell of capacitor；
Fig. 4 is CeThe structural schematic diagram of the capacitor cell of capacitor.
In attached drawing, parts list represented by the reference numerals are as follows:
1、CbCapacitor, 2, CeCapacitor, 3, pony sill, 4, connecting pin, 5, low-pressure end, 6, capacitive post, 7, capacitor cell,
8, grading ring, 9, framework, 10, fuse, 11, connection strap.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Figure 1, a kind of high-voltage capacitor device for inhibiting TRV, including CbCapacitor 1, CeCapacitor 2 and pony sill
3.The CeCapacitor 2 is mounted on the pony sill 3, the CbCapacitor 1 is stacked in the CeShape behind the top of capacitor 2
It is equal to C at total capacitancebCapacitor 1 and CeThe high-voltage capacitor of the sum of 2 two capacitors of capacitor.The volume of the high-voltage capacitor
Constant voltage is 220kV~1000kV, and rated capacity is 10nF~500nF.In the CbDistinguish the top and bottom of capacitor 1
Equipped with the connecting pin 4 that can be used as the high-voltage capacitor input terminal or output end, the height is equipped on the pony sill 3
The low-pressure end 5 of piezoelectric capsule.High-voltage capacitor is there are three connecting terminal, including two connecting pins 4 and a low-pressure end 5, according to
Field connection needs, and two connecting pins 4 can be used as output end or output end uses.The CbCapacitor 1 and the CeCapacitor
2 are formed in parallel by 3~10 column capacitive posts 6, the CbCapacitor 1 and the CeThe capacitive post 6 of capacitor 2 is annular up and down respectively
Arrangement, and the CbCapacitor 1 or the CeThe axial direction of the capacitive post 6 of capacitor 2 intersects at same circle in same level
On, each described circle and the CbCapacitor 1 or the CeThe axial intersection point of the capacitive post 6 of capacitor 2 connects into just polygon
Shape.The diameter of a circle is 2~10 times of 6 diameter of capacitive post, and the side length of the regular polygon is 6 diameter of capacitive post
1.5~3 times.
Capacitive post 6 described in each column is formed by 3~7 layer capacitance unit, about 7 closed assembly.In the CbCapacitor 1 it is most upper
The periphery of layer capacitance unit 7, interlayer capacitance unit 7 and lowest level capacitor cell 7 is respectively provided with a grading ring 8 respectively, in institute
State CeTop layer's capacitor cell 7 of capacitor 2 is equipped with 1~2 grading ring 8.As shown in Fig. 2, the grading ring 8 is that multistage does not connect
Continuous circular arc item composition, each section of circular arc item connect the corresponding capacitor cell 7 by metalwork.The high-voltage capacitor
Device further includes fixing piece.The fixing piece connect the corresponding capacitive post 6 and make the capacitive post 6 become an entirety with
Form the CbCapacitor 1 or the CeCapacitor 2.The each layer capacitor cell 7 or every 1~3 layer of capacitor cell
7 are equipped with a fixing piece.The fixing piece includes framework 9 and connection strap 11.The framework 9 is in capacitor described in same layer
Inside the annulus that unit 7 surrounds, the center for connection all capacitor cells 7 of same layer radiates steel construction, the connection
Item 11 is made of non-metallic material, connects the capacitor cell 7 on the two neighboring capacitive post 6 in same layer and makes corresponding
The capacitive post 6 become an entirety to form the CbCapacitor 1 or the CeCapacitor 2.The framework 9 is more slots
Steel or thick steel plate are welded.One end of the channel steel or thick steel plate, which is met at, is formed together central point, other end court
The central point to connecting all capacitor cells 7 of same layer after external radiation.
As shown in figure 3, the CbThe capacitor cell of capacitor 1 is the internal straight tube porcelain bushing shell structure for being equipped with fuse 10, institute
State CeThe capacitor cell of capacitor 2 is the internal up-small and down-big cone cylinder porcelain bushing shell structure for being equipped with fuse 10.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of high-voltage capacitor device for inhibiting TRV, which is characterized in that including CbCapacitor (1), CeCapacitor (2) and pedestal
Frame (3)；The CeCapacitor (2) is mounted on the pony sill (3), the CbCapacitor (1) is stacked in the CeCapacitor
(2) total capacitance is formed behind top is equal to CbCapacitor (1) and CeThe high-voltage capacitor of the sum of (2) two capacitors of capacitor；Institute
State CbThe connection that can be used as the high-voltage capacitor input terminal or output end is respectively equipped at the top and bottom of capacitor (1)
It holds (4), the low-pressure end (5) of the high-voltage capacitor is equipped on the pony sill (3)；The CbCapacitor (1) and the CeElectricity
Container (2) is formed in parallel by 3~10 column capacitive posts (6), the CbCapacitor (1) and the CeThe capacitive post of capacitor (2)
(6) it is circular layout up and down respectively, and the CbCapacitor (1) or the CeThe axial direction of the capacitive post (6) of capacitor (2) is same
It is intersected in one horizontal plane on same circle, each described circle and the CbCapacitor (1) or the CeThe capacitor of capacitor (2)
The intersection point of column (6) axial direction connects into regular polygon.
2. the high-voltage capacitor device according to claim 1 for inhibiting TRV, which is characterized in that the diameter of a circle is institute
2~10 times for stating capacitive post (6) diameter, the side length of the regular polygon are 1.5~3 times of the capacitive post (6) diameter.
3. the high-voltage capacitor device according to claim 1 for inhibiting TRV, which is characterized in that capacitive post described in each column
(6) by 3~7 layer capacitance units (7), closed assembly is formed up and down；In the CbTop layer's capacitor cell, the middle layer electricity of capacitor (1)
The periphery for holding unit and lowest level capacitor cell is respectively provided with a grading ring (8) respectively, in the CeThe top layer of capacitor (2)
Capacitor cell is equipped with 1~2 grading ring (8).
4. the high-voltage capacitor device according to claim 3 for inhibiting TRV, which is characterized in that the grading ring (8) is more
The discontinuous circular arc item composition of section, each section of circular arc item connect the corresponding capacitor cell (7) by metalwork.
5. the high-voltage capacitor device according to claim 3 for inhibiting TRV, which is characterized in that the CbCapacitor (1)
Capacitor cell is the internal straight tube porcelain bushing shell structure for being equipped with fuse (10), the CeThe capacitor cell of capacitor (2) sets for inside
There is the up-small and down-big cone cylinder porcelain bushing shell structure of fuse (10).
6. the high-voltage capacitor device according to claim 3 for inhibiting TRV, which is characterized in that further include fixing piece；It is described
Fixing piece connects the corresponding capacitive post (6) and the capacitive post (6) is made to become an entirety to form the CbCapacitor
(1) or the CeCapacitor (2)；Each layer capacitor cell (7) is equipped with one every 1~3 layer of capacitor cell (7)
A fixing piece.
7. the high-voltage capacitor device according to claim 6 for inhibiting TRV, which is characterized in that the fixing piece includes structure
Frame (9) and connection strap (11)；The framework (9) is in inside the annulus that capacitor cell (7) surrounds described in same layer, for connection
The center of all capacitor cells (7) of same layer radiates steel construction；The connection strap (11) is made of non-metallic material, connects
It connects the capacitor cell (7) on the two neighboring capacitive post (6) in same layer and the corresponding capacitive post (6) is made to become one
A entirety is to form the CbCapacitor (1) or the CeCapacitor (2).
8. the high-voltage capacitor device according to claim 7 for inhibiting TRV, which is characterized in that the framework (9) is more
Channel steel or thick steel plate are welded；One end of the channel steel or thick steel plate, which is met at, is formed together central point, the other end
Same layer all capacitor cells (7) are connected after towards the central point to external radiation.
9. the high-voltage capacitor device according to any one of claims 1 to 8 for inhibiting TRV, which is characterized in that the high pressure
The voltage rating of capacitor is 220kV~1000kV, and rated capacity is 10nF~500nF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811567302.1A CN109494075A (en) | 2018-12-20 | 2018-12-20 | A kind of high-voltage capacitor device inhibiting TRV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811567302.1A CN109494075A (en) | 2018-12-20 | 2018-12-20 | A kind of high-voltage capacitor device inhibiting TRV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109494075A true CN109494075A (en) | 2019-03-19 |
Family
ID=65711015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811567302.1A Pending CN109494075A (en) | 2018-12-20 | 2018-12-20 | A kind of high-voltage capacitor device inhibiting TRV |
Country Status (1)
| Country | Link |
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| CN (1) | CN109494075A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581022A (en) * | 2019-09-24 | 2019-12-17 | 西安市西无二电子信息集团有限公司 | Voltage-sharing device of high-voltage ceramic capacitor |
| CN114023720A (en) * | 2021-10-12 | 2022-02-08 | 广芯微电子（广州）股份有限公司 | Chain type mesh capacitor structure and construction method and layout method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001118748A (en) * | 1999-10-19 | 2001-04-27 | Yukio Osawa | Universal capacitor using connected capacitor |
| CN201556941U (en) * | 2009-10-10 | 2010-08-18 | 桂林电力电容器有限责任公司 | High voltage DC polar PLC capacitor |
| CN201576567U (en) * | 2009-12-11 | 2010-09-08 | 河南省电力勘测设计院 | Assembled shunt capacitor device |
| CN203983045U (en) * | 2014-06-30 | 2014-12-03 | 中国西电电气股份有限公司 | A kind of voltage levels coupling capacitor structure |
| CN204578078U (en) * | 2015-03-25 | 2015-08-19 | 桂林电力电容器有限责任公司 | Coupling capacitance apparatus |
| CN209149949U (en) * | 2018-12-20 | 2019-07-23 | 桂林电力电容器有限责任公司 | A kind of high-voltage capacitor device inhibiting TRV |
-
2018
- 2018-12-20 CN CN201811567302.1A patent/CN109494075A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001118748A (en) * | 1999-10-19 | 2001-04-27 | Yukio Osawa | Universal capacitor using connected capacitor |
| CN201556941U (en) * | 2009-10-10 | 2010-08-18 | 桂林电力电容器有限责任公司 | High voltage DC polar PLC capacitor |
| CN201576567U (en) * | 2009-12-11 | 2010-09-08 | 河南省电力勘测设计院 | Assembled shunt capacitor device |
| CN203983045U (en) * | 2014-06-30 | 2014-12-03 | 中国西电电气股份有限公司 | A kind of voltage levels coupling capacitor structure |
| CN204578078U (en) * | 2015-03-25 | 2015-08-19 | 桂林电力电容器有限责任公司 | Coupling capacitance apparatus |
| CN209149949U (en) * | 2018-12-20 | 2019-07-23 | 桂林电力电容器有限责任公司 | A kind of high-voltage capacitor device inhibiting TRV |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581022A (en) * | 2019-09-24 | 2019-12-17 | 西安市西无二电子信息集团有限公司 | Voltage-sharing device of high-voltage ceramic capacitor |
| CN114023720A (en) * | 2021-10-12 | 2022-02-08 | 广芯微电子（广州）股份有限公司 | Chain type mesh capacitor structure and construction method and layout method thereof |
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Application publication date: 20190319 |
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