CN108832635A - Alternating current-direct current mixing micro-capacitance sensor and its operating method - Google Patents
Alternating current-direct current mixing micro-capacitance sensor and its operating method Download PDFInfo
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- CN108832635A CN108832635A CN201810791114.0A CN201810791114A CN108832635A CN 108832635 A CN108832635 A CN 108832635A CN 201810791114 A CN201810791114 A CN 201810791114A CN 108832635 A CN108832635 A CN 108832635A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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Abstract
The present invention relates to alternating current-direct current mixing micro-capacitance sensor technical fields; and disclose a kind of alternating current-direct current mixing micro-capacitance sensor; including alternating current-direct current mixing micro-capacitance sensor, the inside of the alternating current-direct current mixing micro-capacitance sensor includes distributed generation resource, energy storage device, energy converter, meets monitoring device and alternating current-direct current protective device.The alternating current-direct current mixing micro-capacitance sensor and its operating method, direct-current grid can be subjected to coordinated control with micro-capacitance sensor is exchanged, improve the efficiency for charge-discharge of energy storage device, electric energy in the micro-capacitance sensor is flexibly flowed, improve the service life of the alternating current-direct current mixing power grid, it ensure that the permanence of the alternating current-direct current mixing micro-capacitance sensor, the operating rate of raising system, improve the coordination rate of power grid, it solves and is not well positioned to meet electrical stability, circuit arrangement is caused to be easy to happen failure, electric load is caused to increase, equipment is caused to lead to the problem of loss or damage, influence the normal operation of micro-grid system, and the problem of influencing effective control to micro-capacitance sensor.
Description
Technical field
The present invention relates to alternating current-direct current mixing micro-capacitance sensor technical field, specially a kind of alternating current-direct current mixing micro-capacitance sensor and its operation
Method.
Background technique
The energy is the foundation stone of human society survival and development, and electric power most direct, convenient application form as it is national
The power source of economic development.The traditional energy resource constraint that current China energy development faces is becoming tight, efficiency of energy utilization is low,
The problems such as environmental ecology pressure increases, the situation is tense for energy security, reply climate change responsibility aggravates.Greatly develop distributed hair
Electric energy supply technology, on the one hand can effectively improve the utilization efficiency of traditional energy, at the same can make full use of again on the spot it is various can be again
The raw energy, oneself becomes the important measures that countries in the world ensure self energy safety, reinforce environmental protection, cope with climate change.Point
Cloth power generation energy supply technology typically refers to conveniently obtain using distributed energy existing for local, including renewable energy with local
The traditional energy taken carries out the technology of power generation energy supply.Technology is energized although with distributed power generation, it is abundant that various regions can be efficiently used
Cleaning and renewable energy, but as distributed generation resource generates electricity by way of merging two or more grid systems the increasingly increase of permeability, to traditional bulk power grid
Operational management also brings new problem, and local distributed power generation energy supplying system and load etc. are organized into micro-capacitance sensor, as
One controllable accesses local power grid, can play the benefit of distributed generation resource to a greater degree, also be avoided that fitful power
Local user's power quality is influenced, facilitates the important load when grid collapses or experience catastrophe into micro-capacitance sensor and continues
Power supply.
Alternating current-direct current mixing micro-capacitance sensor refers to by distributed generation resource, energy storage device, energy converter, associated loadings and prison
Small-sized electric system made of control, protective device are collected is the autonomous system that can be realized self-contr ol, protection and management
System.Both include DC bus wherein according to the difference of distributed generation resource, also includes ac bus.Micro-capacitance sensor passes through in micro-capacitance sensor
The coordinated control of distributed power source output power can guarantee micro-capacitance sensor stable operation；Microgrid energy management system can be effectively
Optimization distribution and balance of the energy in micro-capacitance sensor are maintained, guarantees micro-capacitance sensor economical operation.Micro-capacitance sensor generally has using energy source
Rate is high, energy supply high reliablity, the advantages that pollutant emission is few, performance driving economy is good.
Current existing grid control method is that the simple micro-capacitance sensor that is directed to is controlled, can not be effectively to straight
Galvanic electricity net and AC network carry out classification control, and while energy conservation and environmental protection, are not well positioned to meet electrical stability, lead
It sends a telegraph pipeline equipment and is easy to happen failure, electric load is caused to increase, cause equipment to lead to the problem of loss or damage, influence micro-capacitance sensor
The normal operation of system, and influence effective control to micro-capacitance sensor.
Summary of the invention
（One）The technical issues of solution
In view of the deficiencies of the prior art, the present invention provides a kind of alternating current-direct current mixing micro-capacitance sensor and its operating method, have and be convenient for
It the advantages that alternating current-direct current mixing micro-capacitance sensor control, reduction fault, solves and is not well positioned to meet electrical stability, cause
Circuit arrangement is easy to happen failure, and electric load is caused to increase, and causes equipment to lead to the problem of loss or damage, influences micro-capacitance sensor system
The normal operation of system, and the problem of influence to effective control of micro-capacitance sensor.
（Two）Technical solution
It is above-mentioned convenient for alternating current-direct current mixing micro-capacitance sensor control to realize, the purpose of fault, the following technology of present invention offer are provided
Scheme：The inside of a kind of alternating current-direct current mixing micro-capacitance sensor, including alternating current-direct current mixing micro-capacitance sensor, the alternating current-direct current mixing micro-capacitance sensor includes
Distributed generation resource, energy converter, meets monitoring device and alternating current-direct current protective device at energy storage device；
The output end of micro grid control system and input terminal be electrically connected direct-current grid with exchange micro-capacitance sensor, and direct current is micro-
Power grid is electrically connected to each other with the output end and input terminal for exchanging micro-capacitance sensor, and the output end of direct-current grid has been electrically connected electronic
Automobile charging pile changes electric battery pack and energy-storage battery group, and electric automobile charging pile, changes the defeated of electric battery pack and energy-storage battery group
Outlet is electrically connected with the input terminal of direct-current grid, it is described exchange micro-capacitance sensor output end be electrically connected alternating-current charging pile and
The input terminal of ac/dc charging pile, direct-current grid is electrically connected with distributed power supply system, exchange micro-capacitance sensor input terminal and
Output end is two-way to be electrically connected with power grid；
The alternating current-direct current mixing micro-capacitance sensor includes micro-capacitance sensor bus, and micro-capacitance sensor bus is connected with ac bus by points of common connection,
Ac bus is connected with DC bus by points of common connection, and closure switch are equipped between ac bus and DC bus,
Alternating current-direct current protective device is electrically connected between ac bus and DC bus, ac bus calculates AC load by DC/AC, directly
It flows bus and DC load is calculated by AC/DC, and DC bus is connected with energy storage device by DC/DC, DC bus passes through AC/
DC and DC/DC is electrically connected with new energy equipment.
Preferably, the voltage value of the ac bus is 400V, the voltage value 220V of DC bus, the electricity of micro-capacitance sensor bus
Pressure value is 10KV.
Preferably, the alternating current-direct current protective device mainly protects the voltage load in alternating current-direct current mixing micro-capacitance sensor,
Alternating current-direct current protective device is attached with the equipment on DC bus and ac bus respectively, to form a circuit.
Preferably, described DC/AC, AC/DC, DC/DC are converter, are realized between exchange and direct current by converter
Conversion.
A kind of operating method of alternating current-direct current mixing micro-capacitance sensor, including following operating procedure:
When the power generation summation of new energy equipment is greater than bearing power, the voltage of DC bus can be increased, and work as DC bus
When voltage is higher than AC/DC converter, and when energy storage device be in full state, passes through alternating current-direct current protective device and control new energy and send out
Electric equipment is closed, and continues to power to the energy storage device of saturation in order to prevent, by the commutation inversion for setting AC/DC converter
Switching value, so that the load voltage value that the commutation inversion switching value is DC bus works as storage so that AC/DC is in inverter mode
When energy device is in a saturated state, control DC/DC converter is shutdown status；
When the power generation summation of new energy equipment is greater than bearing power, the voltage of DC bus can be increased, and work as DC bus
When voltage high pressure AC/DC converter, and when energy storage device is in underfill state, alternating current-direct current protective device controls AC/DC and DC/
DC converter, so that AC/DC and DC/DC converter is powered in a manner of pressure limiting constant current, to guarantee to fill to energy storage
Set continued power；
When the power generation summation of new energy equipment is less than bearing power, the voltage of DC bus can be reduced, and work as DC bus
When voltage is lower than AC/DC converter, in order to preferentially use new energy, AC/DC converter is controlled by alternating current-direct current protective device
Commutation inversion switching value and make AC/DC converter so that the commutation inversion switching value is the load voltage value of DC bus
It is powered in the method for constant voltage rectifier, if energy storage device is in a saturated state, alternating current-direct current protective device controls DC/DC converter
It closes, when energy storage device is not in saturation, so that the commutation inversion switching value of energy storage DC/DC converter is the limit of DC bus
Current constant mode is pressed, is charged by this way；
When the power generation summation of new energy equipment is less than bearing power, and the voltage value of energy storage device is less than minimum setting value
When, in order to guarantee the continual operation of important load, equipment once is closed by alternating current-direct current protective device, to reduce load
Value；
When the power generation summation of new energy equipment is less than bearing power, and the voltage value of energy storage device is less than minimum setting value
When, start external generating equipment, important load is switched to by alternating current-direct current protective device by ac bus and is powered, guarantees to set
Standby normal operation.
（Three）Beneficial effect
Compared with prior art, the present invention provides a kind of alternating current-direct current mixing micro-capacitance sensor and its operating methods, have following beneficial
Effect：
1, the alternating current-direct current mixing micro-capacitance sensor and its operating method can effectively improve to direct-current grid and the control for exchanging micro-capacitance sensor
System, by the equipment of alternating current-direct current protective device, can effectively have the power equipment inside alternating current-direct current mixing micro-capacitance sensor
Effect control facilitates the switch of control equipment that can directly be closed certain routes when load superelevation, so that load reduction,
Equipment is protected, and ensure that the normal operation of micro-capacitance sensor, at the same the alternating current-direct current protective device can play it is positive auxiliary
Effect is helped, realizes that micro-capacitance sensor and the friendly of power distribution network access.
2, the alternating current-direct current mixing micro-capacitance sensor and its operating method can coordinate direct-current grid with micro-capacitance sensor is exchanged
Control, improves the efficiency for charge-discharge of energy storage device, the electric energy in the micro-capacitance sensor is flexibly flowed, it is straight to improve the friendship
The service life of stream mixing power grid, ensure that the permanence of the alternating current-direct current mixing micro-capacitance sensor, improves the operating rate of system, improve
The advantages that coordination rate of power grid has reached and controlled convenient for alternating current-direct current mixing micro-capacitance sensor, reduced fault, solving can not be very
Good meets electrical stability, causes circuit arrangement to be easy to happen failure, electric load is caused to increase, cause equipment generate loss or
The problem of the problem of damage, influencing the normal operation of micro-grid system, and influencing effective control to micro-capacitance sensor.
Detailed description of the invention
Fig. 1 is alternating current-direct current mixing micro-capacitance sensor simple diagram of the present invention；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is power supply system schematic diagram of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3, a kind of alternating current-direct current mixing micro-capacitance sensor, including alternating current-direct current mixing micro-capacitance sensor are please referred to, alternating current-direct current mixes micro- electricity
The inside of net includes distributed generation resource, energy storage device, energy converter, meets monitoring device and alternating current-direct current protective device；
The output end of micro grid control system and input terminal be electrically connected direct-current grid with exchange micro-capacitance sensor, and direct current is micro-
Power grid is electrically connected to each other with the output end and input terminal for exchanging micro-capacitance sensor, and the output end of direct-current grid has been electrically connected electronic
Automobile charging pile changes electric battery pack and energy-storage battery group, and electric automobile charging pile, changes the defeated of electric battery pack and energy-storage battery group
Outlet is electrically connected with the input terminal of direct-current grid, and the output end for exchanging micro-capacitance sensor has been electrically connected alternating-current charging pile and friendship
The input terminal of stream/direct-current charging post, direct-current grid is electrically connected with distributed power supply system, exchanges the input terminal of micro-capacitance sensor and defeated
Outlet is two-way to be electrically connected with power grid；
The alternating current-direct current mixing micro-capacitance sensor includes micro-capacitance sensor bus, and micro-capacitance sensor bus is connected with ac bus by points of common connection,
Ac bus is connected with DC bus by points of common connection, and closure switch are equipped between ac bus and DC bus,
Alternating current-direct current protective device is electrically connected between ac bus and DC bus, alternating current-direct current protective device mainly mixes alternating current-direct current micro-
Voltage load in power grid is protected, and alternating current-direct current protective device is connected with the equipment on DC bus and ac bus respectively
It connects, to form a circuit, ac bus calculates AC load by DC/AC, and DC bus calculates direct current by AC/DC and bears
Lotus, and DC bus is connected with energy storage device by DC/DC, DC bus is electrically connected with new energy by AC/DC and DC/DC and supplies
Electric equipment, the voltage value of ac bus are 400V, and the voltage value 220V of DC bus, the voltage value of micro-capacitance sensor bus is 10KV,
DC/AC, AC/DC, DC/DC are converter, realize the conversion between exchange and direct current by converter.
A kind of operating method of alternating current-direct current mixing micro-capacitance sensor, including following operating procedure:
When the power generation summation of new energy equipment is greater than bearing power, the voltage of DC bus can be increased, and work as DC bus
When voltage is higher than AC/DC converter, and when energy storage device be in full state, passes through alternating current-direct current protective device and control new energy and send out
Electric equipment is closed, and continues to power to the energy storage device of saturation in order to prevent, by the commutation inversion for setting AC/DC converter
Switching value, so that the load voltage value that the commutation inversion switching value is DC bus works as storage so that AC/DC is in inverter mode
When energy device is in a saturated state, control DC/DC converter is shutdown status；
When the power generation summation of new energy equipment is greater than bearing power, the voltage of DC bus can be increased, and work as DC bus
When voltage high pressure AC/DC converter, and when energy storage device is in underfill state, alternating current-direct current protective device controls AC/DC and DC/
DC converter, so that AC/DC and DC/DC converter is powered in a manner of pressure limiting constant current, to guarantee to fill to energy storage
Set continued power；
When the power generation summation of new energy equipment is less than bearing power, the voltage of DC bus can be reduced, and work as DC bus
When voltage is lower than AC/DC converter, in order to preferentially use new energy, AC/DC converter is controlled by alternating current-direct current protective device
Commutation inversion switching value and make AC/DC converter so that the commutation inversion switching value is the load voltage value of DC bus
It is powered in the method for constant voltage rectifier, if energy storage device is in a saturated state, alternating current-direct current protective device controls DC/DC converter
It closes, when energy storage device is not in saturation, so that the commutation inversion switching value of energy storage DC/DC converter is the limit of DC bus
Current constant mode is pressed, is charged by this way；
When the power generation summation of new energy equipment is less than bearing power, and the voltage value of energy storage device is less than minimum setting value
When, in order to guarantee the continual operation of important load, equipment once is closed by alternating current-direct current protective device, to reduce load
Value；
When the power generation summation of new energy equipment is less than bearing power, and the voltage value of energy storage device is less than minimum setting value
When, start external generating equipment, important load is switched to by alternating current-direct current protective device by ac bus and is powered, guarantees to set
Standby normal operation.
In conclusion the alternating current-direct current mixing micro-capacitance sensor and its operating method, can effectively improve to direct-current grid and friendship
The control for flowing micro-capacitance sensor can be effectively to the electricity inside alternating current-direct current mixing micro-capacitance sensor by the equipment of alternating current-direct current protective device
Power equipment control effectively, and facilitates the switch of control equipment that can directly be closed certain routes when load superelevation, thus
So that load reduction, protects equipment, and ensure that the normal operation of micro-capacitance sensor, while the alternating current-direct current protective device can
Positive booster action is played, realizes that micro-capacitance sensor and the friendly of power distribution network access；Can by direct-current grid with exchange micro-capacitance sensor
Coordinated control is carried out, the efficiency for charge-discharge of energy storage device is improved, the electric energy in the micro-capacitance sensor is flexibly flowed, is improved
The service life of the alternating current-direct current mixing power grid, ensure that the permanence of the alternating current-direct current mixing micro-capacitance sensor, improves the operation of system
The advantages that rate improves the coordination rate of power grid, has reached and has controlled convenient for alternating current-direct current mixing micro-capacitance sensor, has reduced fault, solves
It is not well positioned to meet electrical stability, causes circuit arrangement to be easy to happen failure, electric load is caused to increase, cause equipment
Lead to the problem of loss or damage, influence the normal operation of micro-grid system, and influence to micro-capacitance sensor effectively control ask
Topic.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of alternating current-direct current mixing micro-capacitance sensor, including alternating current-direct current mixing micro-capacitance sensor, it is characterised in that：The alternating current-direct current mixes micro- electricity
The inside of net includes distributed generation resource, energy storage device, energy converter, meets monitoring device and alternating current-direct current protective device；
The output end of micro grid control system and input terminal be electrically connected direct-current grid with exchange micro-capacitance sensor, and direct current is micro-
Power grid is electrically connected to each other with the output end and input terminal for exchanging micro-capacitance sensor, and the output end of direct-current grid has been electrically connected electronic
Automobile charging pile changes electric battery pack and energy-storage battery group, and electric automobile charging pile, changes the defeated of electric battery pack and energy-storage battery group
Outlet is electrically connected with the input terminal of direct-current grid, it is described exchange micro-capacitance sensor output end be electrically connected alternating-current charging pile and
The input terminal of ac/dc charging pile, direct-current grid is electrically connected with distributed power supply system, exchange micro-capacitance sensor input terminal and
Output end is two-way to be electrically connected with power grid；
The alternating current-direct current mixing micro-capacitance sensor includes micro-capacitance sensor bus, and micro-capacitance sensor bus is connected with ac bus by points of common connection,
Ac bus is connected with DC bus by points of common connection, and closure switch are equipped between ac bus and DC bus,
Alternating current-direct current protective device is electrically connected between ac bus and DC bus, ac bus calculates AC load by DC/AC, directly
It flows bus and DC load is calculated by AC/DC, and DC bus is connected with energy storage device by DC/DC, DC bus passes through AC/
DC and DC/DC is electrically connected with new energy equipment.
2. a kind of alternating current-direct current mixing micro-capacitance sensor according to claim 1, it is characterised in that：The voltage value of the ac bus
For 400V, the voltage value 220V of DC bus, the voltage value of micro-capacitance sensor bus is 10KV.
3. a kind of alternating current-direct current mixing micro-capacitance sensor according to claim 1, it is characterised in that：The alternating current-direct current protective device master
Voltage load in alternating current-direct current mixing micro-capacitance sensor is protected, alternating current-direct current protective device respectively with DC bus and exchange mother
Equipment on line is attached, to form a circuit.
4. a kind of alternating current-direct current mixing micro-capacitance sensor according to claim 1, it is characterised in that：Described DC/AC, AC/DC, DC/
DC is converter, realizes the conversion between exchange and direct current by converter.
5. a kind of operating method of alternating current-direct current mixing micro-capacitance sensor, it is characterised in that：Including following operating procedure:
When the power generation summation of new energy equipment is greater than bearing power, the voltage of DC bus can be increased, and work as DC bus
When voltage is higher than AC/DC converter, and when energy storage device be in full state, passes through alternating current-direct current protective device and control new energy and send out
Electric equipment is closed, and continues to power to the energy storage device of saturation in order to prevent, by the commutation inversion for setting AC/DC converter
Switching value, so that the load voltage value that the commutation inversion switching value is DC bus works as storage so that AC/DC is in inverter mode
When energy device is in a saturated state, control DC/DC converter is shutdown status；
When the power generation summation of new energy equipment is greater than bearing power, the voltage of DC bus can be increased, and work as DC bus
When voltage high pressure AC/DC converter, and when energy storage device is in underfill state, alternating current-direct current protective device controls AC/DC and DC/
DC converter, so that AC/DC and DC/DC converter is powered in a manner of pressure limiting constant current, to guarantee to fill to energy storage
Set continued power；
When the power generation summation of new energy equipment is less than bearing power, the voltage of DC bus can be reduced, and work as DC bus
When voltage is lower than AC/DC converter, in order to preferentially use new energy, AC/DC converter is controlled by alternating current-direct current protective device
Commutation inversion switching value and make AC/DC converter so that the commutation inversion switching value is the load voltage value of DC bus
It is powered in the method for constant voltage rectifier, if energy storage device is in a saturated state, alternating current-direct current protective device controls DC/DC converter
It closes, when energy storage device is not in saturation, so that the commutation inversion switching value of energy storage DC/DC converter is the limit of DC bus
Current constant mode is pressed, is charged by this way；
When the power generation summation of new energy equipment is less than bearing power, and the voltage value of energy storage device is less than minimum setting value
When, in order to guarantee the continual operation of important load, equipment once is closed by alternating current-direct current protective device, to reduce load
Value；
When the power generation summation of new energy equipment is less than bearing power, and the voltage value of energy storage device is less than minimum setting value
When, start external generating equipment, important load is switched to by alternating current-direct current protective device by ac bus and is powered, guarantees to set
Standby normal operation.
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| CN201810791114.0A CN108832635A (en) | 2018-07-18 | 2018-07-18 | Alternating current-direct current mixing micro-capacitance sensor and its operating method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361214A (en) * | 2018-11-23 | 2019-02-19 | 华中科技大学 | A kind of active electric energy router having alternating current-direct current fault traversing |
| WO2022012427A1 (en) * | 2020-07-14 | 2022-01-20 | 珠海格力电器股份有限公司 | Direct-current power supply and distribution control method and system and direct-current micro data center |
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| CN102916481A (en) * | 2012-08-16 | 2013-02-06 | 深圳微网能源管理系统实验室有限公司 | Direct-current microgrid system and energy management method thereof |
| CN105914799A (en) * | 2016-05-03 | 2016-08-31 | 北京北变微电网技术有限公司 | V2G (Vehicle-to-grid) AC-DC mixed micro grid power supply system and structure |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102916481A (en) * | 2012-08-16 | 2013-02-06 | 深圳微网能源管理系统实验室有限公司 | Direct-current microgrid system and energy management method thereof |
| CN105914799A (en) * | 2016-05-03 | 2016-08-31 | 北京北变微电网技术有限公司 | V2G (Vehicle-to-grid) AC-DC mixed micro grid power supply system and structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361214A (en) * | 2018-11-23 | 2019-02-19 | 华中科技大学 | A kind of active electric energy router having alternating current-direct current fault traversing |
| WO2022012427A1 (en) * | 2020-07-14 | 2022-01-20 | 珠海格力电器股份有限公司 | Direct-current power supply and distribution control method and system and direct-current micro data center |
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Application publication date: 20181116 |
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