CN109615207B - Low-voltage transformer area power supply load allocation method and system - Google Patents
Low-voltage transformer area power supply load allocation method and system Download PDFInfo
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Abstract
The invention provides a method and a system for allocating power supply load of a low-voltage transformer area, wherein the method comprises the following steps: obtaining rated load capacity of each low-voltage transformer area electric equipment; binding the electric equipment with the low-voltage transformer area correspondingly; acquiring the current rated load capacity of each low-voltage transformer area; and configuring the current rated load capacity of the electric equipment into the current rated load capacity of the low-voltage transformer area. In order to implement the power distribution to the grid or the regional grid, the current rated load of the low-voltage transformer area may be configured according to the rated load of each low-voltage transformer area electric device of the grid or the regional grid. This is based on configuring within a certain time period. If the rated load amount changes, dynamic adjustment is carried out.
Description
Technical Field
The invention relates to the field of low-voltage distribution area load processing, in particular to a method and a system for allocating power supply load of a low-voltage distribution area.
Background
The low-voltage transformer area is an area with low-voltage power supply of a certain transformer. A plurality of low-voltage stations are generally arranged in one power supply area. In the daily power system load configuration process, the load usage amount of each low-voltage transformer area based on different periods needs to be preset. The factors such as the number of electric equipment can be considered according to different environments of each low-voltage transformer area. For example, a large-scale power plant in a low-voltage transformer area has more mines, and the low-voltage transformer area has a large electric load and needs to be preset with large-load electric power. Some are only residential areas, not residential areas, with fewer electrical devices, lower loads, and low load power configurations. Some areas are fluctuating load usage, some are high in load for time periods, and some are low in load for time periods, requiring dynamic adjustment.
How to distribute the preset load of each low-voltage transformer area in advance, satisfy each low-voltage transformer area use amount, guarantee the safety with the electric wire netting, is the present technical problem who awaits solution urgently.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a method for allocating power supply load of a low-voltage distribution area, which comprises the following steps:
obtaining rated load capacity of each low-voltage transformer area electric equipment;
binding the electric equipment with the low-voltage transformer area correspondingly;
acquiring the current rated load capacity of each low-voltage transformer area;
and configuring the current rated load capacity of the electric equipment into the current rated load capacity of the low-voltage transformer area.
Preferably, after the step of binding the corresponding electric equipment with the low-voltage platform area, the method further comprises:
at least two electric devices are arranged in the low-voltage platform area;
acquiring the current rated load capacity of a low-voltage transformer area;
acquiring a preset rated load of each piece of electric equipment bound in the low-voltage transformer area;
acquiring the sum of rated load quantities of the electric equipment according to the preset rated load quantity of each electric equipment;
configuring the current rated load capacity of the low-voltage transformer area as the sum of the rated load capacities of the electric equipment;
or configuring the sum of the current rated load capacity of the low-voltage transformer area which is greater than the rated load capacity of the electric equipment.
Preferably, the step of obtaining the rated load capacity of each low-voltage platform area electric equipment further comprises:
configuring zone codes of the low-voltage zones;
setting each electric equipment identifier as a correspondingly bound platform area code;
binding the electric equipment with the low-voltage transformer area based on the transformer area code of the low-voltage transformer area;
when the low-voltage transformer area comprises a plurality of electric devices, the identification codes are added after the transformer area is coded according to the load quantity sequence of the electric devices.
Preferably, the step of binding the electric equipment with the low-voltage platform area further includes:
acquiring function identifiers of fixed electric equipment and temporary electric equipment in each low-voltage transformer area;
acquiring rated load capacity of fixed electric equipment and rated load capacity of temporary electric equipment in each low-voltage transformer area;
setting the rated load of the fixed electric equipment in each low-voltage transformer area as the basic rated load of the low-voltage transformer area, and setting the rated load of the temporary electric equipment in the low-voltage transformer area as the floating rated load;
and acquiring the use time period of the temporary electric equipment in the low-voltage transformer area, and configuring the rated load quantity of the low-voltage transformer area as the sum of the basic rated load quantity and the floating rated load quantity when the use time period of the temporary electric equipment is reached.
Preferably, the step of configuring the current rated load capacity of the electric equipment to the current rated load capacity of the low-voltage transformer area further includes:
acquiring the rated load occupation amount in each low-voltage transformer area and the rated load usage amount of the electric equipment every time a preset time length passes;
when a certain low-voltage transformer area initiates information of newly-added electric equipment, acquiring the rated load capacity of the newly-added electric equipment, and judging whether the empty allowance of the rated load capacity in the current low-voltage transformer area meets the rated load capacity of the newly-added electric equipment or not;
if not, allocating a newly increased rated load amount to the low-voltage distribution area;
and if the condition is met, newly-added electric equipment is permitted.
Preferably, the step of configuring the current rated load capacity of the electric equipment to the current rated load capacity of the low-voltage transformer area further includes:
acquiring the rated load occupation amount in each low-voltage transformer area and the rated load usage amount of the electric equipment every time a preset time length passes;
when a certain low-voltage transformer area initiates load increase information of electric equipment, acquiring the rated load amount of the load increase of the electric equipment, and judging whether the empty allowance of the rated load amount in the current low-voltage transformer area meets the rated load amount of the load increase of the electric equipment or not;
if not, allocating a newly increased rated load amount to the low-voltage distribution area;
if satisfied, the electric equipment is permitted to increase the load.
Preferably, the step of configuring the current rated load capacity of the electric equipment to the current rated load capacity of the low-voltage transformer area further includes:
acquiring the rated load occupation amount in each low-voltage transformer area and the rated load usage amount of the electric equipment every time a preset time length passes;
when a certain low-voltage transformer area initiates load reduction information of electric equipment, acquiring the rated load quantity of the electric equipment with reduced load, and judging whether the current reduced rated load quantity is the basic rated load quantity or the floating rated load quantity;
if the load is the basic rated load, the reduced rated load is recovered;
if the rated load is floated, the reduced rated load of the low-voltage platform area is reserved.
A low-voltage distribution area power supply load allocation system comprises: power supply load allotment platform, power supply load allotment platform includes: the system comprises a low-voltage transformer area load acquisition module, a transformer area equipment binding module and a load configuration module;
the low-voltage transformer area load quantity acquisition module is used for acquiring the rated load quantity of each low-voltage transformer area electric equipment; acquiring the current rated load capacity of each low-voltage transformer area;
the transformer area equipment binding module is used for binding the electric equipment with the low-voltage transformer area correspondingly;
the load quantity configuration module is used for configuring the current rated load quantity of the electric equipment into the current rated load quantity of the low-voltage transformer area.
Preferably, the low-voltage transformer area load quantity obtaining module is further configured to obtain a current rated load quantity of the low-voltage transformer area, where at least two electric devices are configured in the low-voltage transformer area; acquiring a preset rated load of each piece of electric equipment bound in the low-voltage transformer area; acquiring the sum of rated load quantities of the electric equipment according to the preset rated load quantity of each electric equipment;
the load quantity configuration module is also used for configuring the current rated load quantity of the low-voltage transformer area as the sum of the rated load quantities of the electric equipment; or configuring the sum of the current rated load capacity of the low-voltage transformer area which is greater than the rated load capacity of the electric equipment.
Preferably, the low-voltage transformer area load amount obtaining module is further configured to obtain a function identifier of the fixed electric equipment and a function identifier of the temporary electric equipment in each low-voltage transformer area;
acquiring rated load capacity of fixed electric equipment and rated load capacity of temporary electric equipment in each low-voltage transformer area;
the load quantity configuration module is also used for setting the rated load quantity of the fixed electric equipment in each low-voltage transformer area as the basic rated load quantity of the low-voltage transformer area and setting the rated load quantity of the temporary electric equipment in the low-voltage transformer area as the floating rated load quantity; and acquiring the use time period of the temporary electric equipment in the low-voltage transformer area, and configuring the rated load quantity of the low-voltage transformer area as the sum of the basic rated load quantity and the floating rated load quantity when the use time period of the temporary electric equipment is reached.
According to the technical scheme, the invention has the following advantages:
the method comprises the steps of obtaining the current rated load of each low-voltage transformer area; and configuring the current rated load capacity of the electric equipment into the current rated load capacity of the low-voltage transformer area. Therefore, the preset load of each low-voltage transformer area can be automatically distributed in advance, the use amount of each low-voltage transformer area is met, and the safety of a power grid is guaranteed.
In order to implement the power distribution to the grid or the regional grid, the current rated load of the low-voltage transformer area may be configured according to the rated load of each low-voltage transformer area electric device of the grid or the regional grid. This is based on configuring within a certain time period. If the rated load amount changes, dynamic adjustment is carried out.
The invention can also configure corresponding rated load capacity based on the requirements of different time periods according to each low-voltage transformer area. The load capacity of each low-voltage transformer area can be configured according to the rated load capacity of each low-voltage transformer area, the usage amount of each low-voltage transformer area is met, and the safety of a power grid is guaranteed. And the load capacity is dynamically dispatched, and the full utilization of the load of the power grid is realized.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for allocating power supply load in a low-voltage distribution area;
FIG. 2 is a flow chart of an embodiment of a method for allocating power supply loads in a low-voltage distribution area;
FIG. 3 is a flow chart of an embodiment of a method for allocating power supply loads in a low-voltage distribution area;
FIG. 4 is a flowchart of an embodiment of a method for allocating power supply loads in a low-voltage distribution area;
fig. 5 is a schematic diagram of a power supply load allocation system for a low-voltage distribution area.
Detailed Description
The invention provides a method for allocating power supply load of a low-voltage transformer area, which comprises the following steps of:
s1, obtaining rated load capacity of each low-voltage transformer area electric equipment;
s2, binding the electric equipment with the low-voltage transformer area correspondingly;
s3, acquiring the current rated load of each low-voltage transformer area;
and S4, configuring the current rated load capacity of the electric equipment into the current rated load capacity of the low-voltage transformer area.
It can be understood that the low-voltage platform area is provided with electric equipment, and the electric equipment can be electric equipment in the power supply range of the low-voltage platform area. The rated load capacity of the electric device may be a rated capacity or a rated power of the electric device. Can refer to the normal working state of the electric equipment
Loads may also refer to power and current passing in wires, cables and electrical equipment (transformers, circuit breakers, etc.). The load is not a constant value but a variable value that changes with time. Because the electric devices do not operate simultaneously, even if they operate simultaneously, they do not all reach the rated capacity at the same time.
In order to implement the power distribution to the grid or the regional grid, the current rated load of the low-voltage transformer area may be configured according to the rated load of each low-voltage transformer area electric device of the grid or the regional grid. This is based on configuring within a certain time period. If the rated load amount changes, dynamic adjustment is carried out.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments and drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.
In the embodiment provided by the present invention, as shown in fig. 2, after the step of binding the electric equipment with the low-voltage transformer area correspondingly, the method further includes:
s11, obtaining rated load capacity of each low-voltage transformer area electric equipment;
s12, binding the electric equipment with the low-voltage transformer area correspondingly;
s13, configuring at least two electric devices in the low-voltage platform area;
generally, a plurality of electric devices are arranged in some low-voltage transformer areas, and the load of the low-voltage transformer areas needs to be configured.
S14, acquiring the current rated load of the low-voltage transformer area;
s15, acquiring the preset rated load of each electric device bound in the low-voltage transformer area;
s16, acquiring the sum of the rated load of the electric equipment according to the preset rated load of each electric equipment;
s17, configuring the current rated load capacity of the low-voltage transformer area as the sum of the rated load capacities of the electric equipment;
or configuring the sum of the current rated load capacity of the low-voltage transformer area which is greater than the rated load capacity of the electric equipment. Therefore, the configuration of the rated load capacity of the multi-equipment low-voltage transformer area is realized, the use of each low-voltage transformer area is met, and dynamic adjustment can be realized.
In the embodiment provided by the present invention, as shown in fig. 3,
the step of obtaining the rated load capacity of the electric equipment in each low-voltage transformer area further comprises the following steps:
s21, configuring zone codes of each low-voltage zone;
s22, setting each electric equipment identifier as a correspondingly bound platform area code;
s23, binding the electric equipment with the low-voltage transformer area based on the transformer area code of the low-voltage transformer area;
and S24, when the low-voltage transformer area comprises a plurality of electric devices, adding the identification codes after the transformer area is coded according to the load quantity sequence of the electric devices.
Therefore, each low-voltage transformer area is coded, and the electric equipment corresponding to the low-voltage transformer area is coded based on the codes of the low-voltage transformer areas, so that the management of the whole system is facilitated.
In the embodiment provided by the present invention, as shown in fig. 4, the step of binding the electric device with the low-voltage transformer area further includes:
s31, acquiring function identifiers of fixed electric equipment and temporary electric equipment in each low-voltage transformer area;
s32, acquiring rated load of fixed electric equipment and rated load of temporary electric equipment in each low-voltage transformer area;
s33, setting the rated load of the fixed electric equipment in each low-voltage transformer area as the basic rated load of the low-voltage transformer area, and setting the rated load of the temporary electric equipment in the low-voltage transformer area as the floating rated load;
and S34, acquiring the use time period of the temporary electric equipment in the low-voltage transformer area, and configuring the rated load amount of the low-voltage transformer area as the sum of the basic rated load amount and the floating rated load amount when the use time period of the temporary electric equipment is in.
Temporary power utilization equipment is arranged in some low-voltage transformer areas, so that the system automatically configures the floating rated load, and the low-voltage transformer areas are required to configure the floating rated load. This may enable a dynamic adjustment mechanism for the system.
In the embodiment provided by the invention, after the step of configuring the current rated load capacity of the electric equipment into the current rated load capacity of the low-voltage transformer area, the method further comprises the following steps:
acquiring the rated load occupation amount in each low-voltage transformer area and the rated load usage amount of the electric equipment every time a preset time length passes;
when a certain low-voltage transformer area initiates information of newly-added electric equipment, acquiring the rated load capacity of the newly-added electric equipment, and judging whether the empty allowance of the rated load capacity in the current low-voltage transformer area meets the rated load capacity of the newly-added electric equipment or not;
if not, allocating a newly increased rated load amount to the low-voltage distribution area;
and if the condition is met, newly-added electric equipment is permitted.
In the embodiment provided by the invention, after the step of configuring the current rated load capacity of the electric equipment into the current rated load capacity of the low-voltage transformer area, the method further comprises the following steps:
acquiring the rated load occupation amount in each low-voltage transformer area and the rated load usage amount of the electric equipment every time a preset time length passes;
when a certain low-voltage transformer area initiates load increase information of electric equipment, acquiring the rated load amount of the load increase of the electric equipment, and judging whether the empty allowance of the rated load amount in the current low-voltage transformer area meets the rated load amount of the load increase of the electric equipment or not;
if not, allocating a newly increased rated load amount to the low-voltage distribution area;
if satisfied, the electric equipment is permitted to increase the load.
In the embodiment provided by the invention, after the step of configuring the current rated load capacity of the electric equipment into the current rated load capacity of the low-voltage transformer area, the method further comprises the following steps:
acquiring the rated load occupation amount in each low-voltage transformer area and the rated load usage amount of the electric equipment every time a preset time length passes;
when a certain low-voltage transformer area initiates load reduction information of electric equipment, acquiring the rated load quantity of the electric equipment with reduced load, and judging whether the current reduced rated load quantity is the basic rated load quantity or the floating rated load quantity;
if the load is the basic rated load, the reduced rated load is recovered;
if the rated load is floated, the reduced rated load of the low-voltage platform area is reserved.
The present invention further provides a system for allocating power supply load in a low-voltage distribution room, as shown in fig. 5, including: and a power supply load allocation platform.
The power load provisioning platform may include a computer readable medium of data, such as Random Access Memory (RAM), Read Only Memory (ROM), non-volatile random access memory (NVRAM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory, magnetic or optical data storage media, and the like. In some embodiments, an article of manufacture may comprise one or more computer-readable storage media. The power supply load allocation platform further comprises a corresponding application program, a processor, a memory, a mainboard and the like. The power supply load dispatching platform can be a monitoring and dispatching platform of a power grid and the like.
The power supply load allocation platform comprises: the system comprises a low-voltage transformer area load acquisition module 1, a transformer area equipment binding module 2 and a load configuration module 3;
the low-voltage transformer area load quantity acquisition module 1 is used for acquiring the rated load quantity of each low-voltage transformer area electric equipment; acquiring the current rated load capacity of each low-voltage transformer area;
the transformer area equipment binding module 2 is used for binding the electric equipment with the low-voltage transformer area correspondingly;
the load quantity configuration module 3 is used for configuring the current rated load quantity of the electric equipment into the current rated load quantity of the low-voltage transformer area.
In the invention, the low-voltage transformer area load quantity acquisition module 1 is also used for acquiring the current rated load quantity of the low-voltage transformer area, wherein at least two electric devices are configured in the low-voltage transformer area; acquiring a preset rated load of each piece of electric equipment bound in the low-voltage transformer area; acquiring the sum of rated load quantities of the electric equipment according to the preset rated load quantity of each electric equipment;
the load quantity configuration module 3 is further used for configuring the current rated load quantity of the low-voltage transformer area as the sum of the rated load quantities of the electric equipment; or configuring the sum of the current rated load capacity of the low-voltage transformer area which is greater than the rated load capacity of the electric equipment.
In the invention, the low-voltage transformer area load quantity acquisition module 1 is also used for acquiring the function identification of the fixed electric equipment and the function identification of the temporary electric equipment in each low-voltage transformer area;
acquiring rated load capacity of fixed electric equipment and rated load capacity of temporary electric equipment in each low-voltage transformer area;
the load quantity configuration module 3 is further configured to set a rated load quantity of the fixed electric equipment in each low-voltage transformer area to a basic rated load quantity of the low-voltage transformer area, and set a rated load quantity of the temporary electric equipment in the low-voltage transformer area to a floating rated load quantity; and acquiring the use time period of the temporary electric equipment in the low-voltage transformer area, and configuring the rated load quantity of the low-voltage transformer area as the sum of the basic rated load quantity and the floating rated load quantity when the use time period of the temporary electric equipment is reached.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. A low-voltage distribution area power supply load allocation method is characterized by comprising the following steps:
obtaining rated load capacity of each low-voltage transformer area electric equipment;
configuring zone codes of the low-voltage zones;
setting each electric equipment identifier as a correspondingly bound platform area code;
binding the electric equipment with the low-voltage transformer area based on the transformer area code of the low-voltage transformer area;
when the low-voltage transformer area comprises a plurality of electric equipment, the identification code is added after the transformer area is coded according to the load quantity sequence of the electric equipment;
binding the electric equipment with the low-voltage transformer area correspondingly;
at least two electric devices are arranged in the low-voltage platform area;
acquiring the current rated load capacity of a low-voltage transformer area;
acquiring a preset rated load of each piece of electric equipment bound in the low-voltage transformer area;
acquiring the sum of rated load quantities of the electric equipment according to the preset rated load quantity of each electric equipment;
configuring the current rated load capacity of the low-voltage transformer area as the sum of the rated load capacities of the electric equipment;
or configuring the sum of the current rated load capacity of the low-voltage transformer area which is greater than the rated load capacity of the electric equipment;
acquiring function identifiers of fixed electric equipment and temporary electric equipment in each low-voltage transformer area;
acquiring rated load capacity of fixed electric equipment and rated load capacity of temporary electric equipment in each low-voltage transformer area;
setting the rated load of the fixed electric equipment in each low-voltage transformer area as the basic rated load of the low-voltage transformer area, and setting the rated load of the temporary electric equipment in the low-voltage transformer area as the floating rated load;
acquiring a use time period of temporary electric equipment in a low-voltage transformer area, and configuring the rated load quantity of the low-voltage transformer area as the sum of the basic rated load quantity and the floating rated load quantity when the temporary electric equipment is in the use time period;
acquiring the current rated load capacity of each low-voltage transformer area;
acquiring the rated load occupation amount in each low-voltage transformer area and the rated load usage amount of the electric equipment every time a preset time length passes;
when a certain low-voltage transformer area initiates information of newly-added electric equipment, acquiring the rated load capacity of the newly-added electric equipment, and judging whether the empty allowance of the rated load capacity in the current low-voltage transformer area meets the rated load capacity of the newly-added electric equipment or not;
if not, allocating a newly increased rated load amount to the low-voltage distribution area;
if yes, new electric equipment is permitted;
configuring the current rated load capacity of the electric equipment into the current rated load capacity of the low-voltage transformer area;
when a certain low-voltage transformer area initiates load reduction information of electric equipment, acquiring the rated load quantity of the electric equipment with reduced load, and judging whether the current reduced rated load quantity is the basic rated load quantity or the floating rated load quantity;
if the load is the basic rated load, the reduced rated load is recovered;
if the floating rated load is the low-voltage transformer area, reserving the reduced rated load of the low-voltage transformer area;
when a certain low-voltage transformer area initiates load increase information of electric equipment, acquiring the rated load amount of the load increase of the electric equipment, and judging whether the empty allowance of the rated load amount in the current low-voltage transformer area meets the rated load amount of the load increase of the electric equipment or not;
if not, allocating a newly increased rated load amount to the low-voltage distribution area;
if satisfied, the electric equipment is permitted to increase the load.
2. A low-voltage distribution area power supply load distribution system is characterized in that the low-voltage distribution area power supply load distribution method of claim 1 is adopted;
the system comprises: power supply load allotment platform, power supply load allotment platform includes: the system comprises a low-voltage transformer area load acquisition module, a transformer area equipment binding module and a load configuration module;
the low-voltage transformer area load quantity acquisition module is used for acquiring the rated load quantity of each low-voltage transformer area electric equipment; acquiring the current rated load capacity of each low-voltage transformer area;
the transformer area equipment binding module is used for binding the electric equipment with the low-voltage transformer area correspondingly;
the load quantity configuration module is used for configuring the current rated load quantity of the electric equipment into the current rated load quantity of the low-voltage transformer area;
the low-voltage transformer area load quantity acquisition module is also used for acquiring the current rated load quantity of the low-voltage transformer area, wherein at least two electric devices are configured in the low-voltage transformer area; acquiring a preset rated load of each piece of electric equipment bound in the low-voltage transformer area; acquiring the sum of rated load quantities of the electric equipment according to the preset rated load quantity of each electric equipment;
the load quantity configuration module is also used for configuring the current rated load quantity of the low-voltage transformer area as the sum of the rated load quantities of the electric equipment; or configuring the sum of the current rated load capacity of the low-voltage transformer area which is greater than the rated load capacity of the electric equipment;
the low-voltage transformer area load acquisition module is also used for acquiring the function identification of the fixed electric equipment and the function identification of the temporary electric equipment in each low-voltage transformer area;
acquiring rated load capacity of fixed electric equipment and rated load capacity of temporary electric equipment in each low-voltage transformer area;
the load quantity configuration module is also used for setting the rated load quantity of the fixed electric equipment in each low-voltage transformer area as the basic rated load quantity of the low-voltage transformer area and setting the rated load quantity of the temporary electric equipment in the low-voltage transformer area as the floating rated load quantity; and acquiring the use time period of the temporary electric equipment in the low-voltage transformer area, and configuring the rated load quantity of the low-voltage transformer area as the sum of the basic rated load quantity and the floating rated load quantity when the use time period of the temporary electric equipment is reached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811476087.4A CN109615207B (en) | 2018-12-04 | 2018-12-04 | Low-voltage transformer area power supply load allocation method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811476087.4A CN109615207B (en) | 2018-12-04 | 2018-12-04 | Low-voltage transformer area power supply load allocation method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109615207A CN109615207A (en) | 2019-04-12 |
| CN109615207B true CN109615207B (en) | 2021-11-02 |
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