CN109245119A - capacitor switching control method and device - Google Patents
capacitor switching control method and device Download PDFInfo
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- CN109245119A CN109245119A CN201811151477.4A CN201811151477A CN109245119A CN 109245119 A CN109245119 A CN 109245119A CN 201811151477 A CN201811151477 A CN 201811151477A CN 109245119 A CN109245119 A CN 109245119A
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The present invention relates to a kind of capacitor switching control method and devices.Wherein, capacitor switching control method includes: in conjunction with capacitor group total quantity and to have put into capacitor group quantity, is based on the first comparison result, the second comparison result and third comparison result, carries out switching control to each group capacitor of reactive compensation point；First comparison result is to compare the upper limit of line voltage and voltage range to obtain；Second comparison result is to compare the lower limit of line voltage and voltage range to obtain；Third comparison result is to compare power factor to obtain with power factor limit value；Voltage range and power factor limit value are to be arranged to obtain according to the loading level of reactive compensation point.Above-mentioned capacitor switching control method can preferably play the compensation function of capacitor, promote compensation capacitor group utilization rate, improve low-voltage regulation effect, and improve power quality and reduce power distribution network running wastage.
Description
Technical field
This application involves technical field of power systems, more particularly to a kind of capacitor switching control method and device.
Background technique
With the raising of national economic development and living standards of the people, user is to power quality, especially quality of voltage
It is required that being continuously improved.Reactive compensation is the important means that power grid keeps good operation state, it can effectively improve power quality,
Reduce losses of distribution network.
In current power distribution network, not all load side can all install reactive-load compensation equipment, for economy and
The considerations of construction, usually only can install reactive-load compensation equipment in end in the route that larger, load is more concentrated in capacity of distribution transform.
During realization, inventor has found that at least there are the following problems in traditional technology:
Current power grid is difficult to play the compensation function of capacitor group, and low-voltage regulation effect is poor, and it is poor that there are power qualities
And the problem that running wastage is high.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, provide one kind and be able to ascend compensation capacitor group utilization rate, improve
Low-voltage regulation effect, and improve power quality and reduce the capacitor switching control method and dress of power distribution network running wastage
It sets.
To achieve the goals above, on the one hand, the embodiment of the invention provides a kind of capacitor switching control method, packets
It includes:
In conjunction with capacitor group total quantity and capacitor group quantity has been put into, has been based on the first comparison result, the second comparison result
And third comparison result, switching control is carried out to each group capacitor of reactive compensation point；
First comparison result is to compare the upper limit of line voltage and voltage range to obtain；Second comparison result is to compare line voltage
It is obtained with the lower limit of voltage range；Third comparison result is to compare power factor to obtain with power factor limit value；Voltage range and
Power factor limit value is to be arranged to obtain according to the loading level of reactive compensation point.
Capacitor group total quantity is combined in one of the embodiments, and has put into capacitor group quantity, based on the first ratio
To result, the second comparison result and third comparison result, the step of switching control is carried out to each group capacitor of reactive compensation point
Suddenly include:
When on-Line Voltage is less than the lower limit of voltage range and has put into capacitor group quantity less than capacitor group total quantity,
The capacitor of first group of number is put into, until line voltage is greater than or equal to the lower limit of voltage range；
When on-Line Voltage is greater than the upper limit of voltage range and has put into capacitor group quantity greater than zero, second group of number is exited
Capacitor, until line voltage be less than or equal to voltage range the upper limit；
On-Line Voltage is in the range of voltage range, the power factor of reactive compensation point is less than power factor limit value and
When putting into capacitor group quantity less than capacitor group total quantity, following steps are repeated up to the power factor of reactive compensation point
More than or equal to power factor limit value:
Put into the capacitor of third group number；
Judge whether line voltage is less than or equal to the upper limit of voltage range；
If it is not, exiting the capacitor of the 4th group of number and stopping executing.
First group of number, second group of number, third group number and the 4th group of number are 1 in one of the embodiments,.
It is combining capacitor group total quantity in one of the embodiments, and is putting into capacitor group quantity, be based on first
Comparison result, the second comparison result and third comparison result carry out switching control to each group capacitor of reactive compensation point
It is further comprised the steps of: before step
According to loading level, voltage range and power factor limit value are set；Loading level is the load according to reactive compensation point
Level determines.
Capacitor group total quantity is the basic data collected from reactive compensation point in one of the embodiments,；Line
Voltage, power factor and to have put into capacitor group quantity be the operation data collected from reactive compensation point.
Operation data further includes line current in one of the embodiments,；Basic data further includes that distribution transformer is secondary
Side rated current；
It is further comprised the steps of: before the step of voltage range and power factor limit value are set according to loading level
Quotient based on line current and distribution transformer secondary side rated current, obtains load level；
According to load level, loading level is determined.
In one of the embodiments, according to load level, the step of determining loading level, includes:
Load level is set and determines section；
The load level according to locating for load level determines section, determines loading level.
On the other hand, the embodiment of the invention also provides a kind of capacitor switching control device, which includes:
Switching control module is compared for combining capacitor group total quantity and having put into capacitor group quantity based on first
As a result, the second comparison result and third comparison result carry out switching control to each group capacitor of reactive compensation point；
First comparison result is to compare the upper limit of line voltage and voltage range to obtain；Second comparison result is to compare line voltage
It is obtained with the lower limit of voltage range；Third comparison result is to compare power factor to obtain with power factor limit value；Voltage range and
Power factor limit value is to be arranged to obtain according to the loading level of reactive compensation point.
A kind of computer equipment, including memory and processor, memory are stored with computer program, and processor executes meter
The step of realizing capacitor switching control method in each embodiment when calculation machine program.
A kind of computer readable storage medium is stored thereon with computer program, when computer program is executed by processor
The step of realizing capacitor switching control method in each embodiment.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
It is compared by taking line voltage and power factor into consideration, improves the accuracy of comparison result, and according to difference
Loading level different voltage range and power factor limit value are set are compared, fully considered under different loads degree
Demand difference is compensated, and then the first comparison result, the second comparison result and third comparison result can be based on, more targetedly
Ground carries out switching control to each group capacitor of reactive compensation point, preferably plays the compensation function of capacitor, promotes compensation electricity
Container group utilization rate improves low-voltage regulation effect, and improves power quality and reduce power distribution network running wastage.Further
, in the case where considering power factor limit value, it can control capacitor progress reactive power appropriate and send, and then to distribution
The reactive loss generated on transformer and route realizes in-situ balancing, and the part that can also balance neighbouring uncompensated area is idle
Load, make up presently, there are reactive power compensator installation point deficiency problem.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the first schematic flow schematic diagram of capacitor switching control method in one embodiment；
Fig. 2 is the second schematic flow schematic diagram of capacitor switching control method in one embodiment；
Fig. 3 is the flow diagram of a specific example in one embodiment；
Fig. 4 is the node voltage under traditional control method and the node voltage contrast curve chart under control method of the present invention；
Fig. 5 is the structural block diagram of capacitor switching control device in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
According to existing reactive-load compensation capacitor operation/cutting method, each reactive compensation point all can only compensation balance this TV station area
Load or burden without work, local power factor general control is between the 0.90~0.95 of lag.However, power distribution network is in different loads situation
Reactive compensation capacity required for lower differs greatly, and different load conditions is using unified fixed voltage and power factor limit value
It is difficult to reach most effective energy conservation and decreasing loss effect.Load is few when distribution system is in load trough, at this time distribution wire
Road overcompensation itself will generate electricity if the case where a large amount of idle superfluous and overtension occurs again in higher level's power grid
Pressure is so that burn the compensation equipment on route.It is set further, since traditional low-pressure reactive compensation control strategy does not allow to compensate
Standby to send reactive power to medium voltage network, the reactive loss on distribution transformer and distribution line can only be conveyed from upper layer power grid,
This certainly exists the biggish energy saving space in the load heavier period.
The application combination line voltage and power factor are as criterion, for different loads degree, to each of reactive compensation point
Group capacitor carries out switching control, more effectively reduces reactive loss, improves power quality, improves capacitor utilization efficiency and matches
The saving energy and decreasing loss benefit of power grid promotes low-voltage regulation effect.
Capacitor switching control method provided by the present application, can be applied to high voltage distribution network, medium voltage distribution network and low pressure
In the various power distribution networks such as power distribution network.
In one embodiment, as shown in Figure 1, providing a kind of capacitor switching control method, comprising the following steps:
Step 102, in conjunction with capacitor group total quantity and capacitor group quantity has been put into, has been based on the first comparison result, second
Comparison result and third comparison result carry out switching control to each group capacitor of reactive compensation point.
Wherein, the first comparison result is to compare the upper limit of line voltage and voltage range to obtain；Second comparison result is to compare
The lower limit of line voltage and voltage range obtains；Third comparison result is to compare power factor to obtain with power factor limit value；Voltage
Section and power factor limit value are to be arranged to obtain according to the loading level of reactive compensation point.
Capacitor group total quantity is the group number of capacitor, including has put into capacitor group quantity and do not put into capacitor group number
Amount.Further, line voltage, power factor, capacitor group total quantity and put into capacitor group quantity can be from idle benefit
It repays and a little collects.
The loading level of reactive compensation point may include that underloading, often load and heavy duty, each degree are corresponding with different electricity
Between pressure area and different capacity factor limit value.
Specifically, switching control may include putting into several group capacitors or exiting several group capacitors, each after investment
The quantity of group capacitor can be to have put into capacitor group quantity, and the quantity of each group capacitor after exiting, which can increase to, does not throw
Enter in capacitor group quantity.
When the first comparison result is the upper limit that line voltage is greater than voltage range, several group capacitors can be exited；?
When two comparison results are the lower limit that line voltage is less than voltage range, several group capacitors can be put into；It is in third comparison result
When power factor is less than power factor limit value, several group capacitors can be put into.
It in above-mentioned capacitor switching control method, is compared by taking line voltage and power factor into consideration, improves ratio
To the accuracys of result, and different voltage range and power factor limit value are arranged according to different loading levels and are compared,
It has fully considered the compensation demand difference under different loads degree, and then the first comparison result, the second comparison result can be based on
And third comparison result, switching control more targetedly is carried out to each group capacitor of reactive compensation point, is preferably played
The compensation function of capacitor, promoted compensation capacitor group utilization rate, improve low-voltage regulation effect, and improve power quality and
Reduce power distribution network running wastage.Further, in the case where considering power factor limit value, it can control capacitor and carry out suitably
Reactive power give, and then in-situ balancing is realized to the reactive loss that generates on distribution transformer and route, can also balance
The part load or burden without work in neighbouring uncompensated area, make up presently, there are reactive power compensator installation point deficiency problem.
In one embodiment, as shown in Fig. 2, providing a kind of capacitor switching control method, comprising the following steps:
S202, the quotient based on line current and distribution transformer secondary side rated current, obtains load level.
Wherein, line current and distribution transformer secondary side rated current can be collected from reactive compensation point.
S204 determines loading level according to load level.
Voltage range and power factor limit value is arranged according to loading level in S206.
S208 in conjunction with capacitor group total quantity and has put into capacitor group quantity, is compared based on the first comparison result, second
As a result and third comparison result, switching control is carried out to each group capacitor of reactive compensation point.
The step of step S208 includes: in one of the embodiments,
When on-Line Voltage is less than the lower limit of voltage range and has put into capacitor group quantity less than capacitor group total quantity,
The capacitor of first group of number is put into, until line voltage is greater than or equal to the lower limit of voltage range；
When on-Line Voltage is greater than the upper limit of voltage range and has put into capacitor group quantity greater than zero, second group of number is exited
Capacitor, until line voltage be less than or equal to voltage range the upper limit；
On-Line Voltage is in the range of voltage range, the power factor of reactive compensation point is less than power factor limit value and
When putting into capacitor group quantity less than capacitor group total quantity, following steps are repeated up to the power factor of reactive compensation point
More than or equal to power factor limit value:
Put into the capacitor of third group number；
Judge whether line voltage is less than or equal to the upper limit of voltage range；
If it is not, exiting the capacitor of the 4th group of number and stopping executing.
In a specific embodiment, first group of number, second group of number, third group number and the 4th group of number are 1.
In a specific embodiment, capacitor group total quantity is the basic data collected from reactive compensation point；
Line voltage, power factor and to have put into capacitor group quantity be the operation data collected from reactive compensation point.
Wherein, operation data can also include line current；Basic data can also include that distribution transformer secondary side is specified
Electric current.
In a specific embodiment, step S204 includes:
Load level is set and determines section；
The load level according to locating for load level determines section, determines loading level.
Wherein, load level determines that section may include multiple sections, corresponding multiple and different loading level and water load
It is flat.
Specifically, load level determine section can be set to: less than or be equal to 20%, greater than 20% and be less than or equal to
80%, and it is greater than 80%.
In a specific embodiment, load level determines that section includes: greater than 20% and to be less than less than or equal to 20%
Equal to 80%, and it is greater than 80%；
The load level according to locating for load level determines section, and the step of determining loading level includes:
When load level is less than or equal to 20%, determine loading level for underloading；
When load level is greater than 20% and is less than or equal to 80%, determine that loading level is often to carry；
When load level is greater than 80%, determine loading level for heavy duty.
In a specific embodiment, step S206 includes:
Loading level be at light load, be arranged voltage range lower limit be 222V, upper limit 227V；Power factor is arranged to limit
Value is lag 0.97；
When loading level is often to carry, the lower limit that voltage range is arranged is 227V, upper limit 230V；Power factor is arranged to limit
Value is advanced 0.97；
Loading level be when overloaded, be arranged voltage range lower limit be 230V, upper limit 232V；Power factor is arranged to limit
Value is advanced 0.93.
It should be noted that being repeated no more for identical feature in each embodiment.
It in above-mentioned capacitor switching control method, is compared by taking line voltage and power factor into consideration, improves ratio
To the accuracys of result, and different voltage range and power factor limit value are arranged according to different loading levels and are compared,
It has fully considered the compensation demand difference under different loads degree, and then the first comparison result, the second comparison result can be based on
And third comparison result, switching control more targetedly is carried out to each group capacitor of reactive compensation point, is preferably played
The compensation function of capacitor, promoted compensation capacitor group utilization rate, improve low-voltage regulation effect, and improve power quality and
Reduce power distribution network running wastage.Further, in the case where considering power factor limit value, it can control capacitor and carry out suitably
Reactive power give, and then in-situ balancing is realized to the reactive loss that generates on distribution transformer and route, can also balance
The part load or burden without work in neighbouring uncompensated area, make up presently, there are reactive power compensator installation point deficiency problem.
Below with reference to a specific example, as shown in figure 3, the present embodiment is described in detail.
A kind of capacitor switching control method, comprising:
(1) basic data and operation data of reactive compensation point are collected；
Wherein, operation data includes that line voltage, line current, power factor, the capacitor group number currently put into (have put into electricity
Container group quantity)；Basic data includes the quantity (capacitor group total quantity) and single group capacitor of each reactive compensation point capacitor group
The distribution transformer secondary side rated current of device compensation capacity, each reactive compensation point.
(2) load level η is calculated according to the following formula:
Wherein, I refers to line current；ISNRefer to distribution transformer secondary side rated current.
(3) setting carries and heavily loaded three kinds of loading levels corresponding three kinds of load levels judgement section with underloading, often, and according to
Load level locating for load level η determines section, determines loading level:
In load level η≤A%, determine loading level for underloading；A is 20 referring generally to value；
In load level A% < η≤B%, determine that loading level is often to carry；B is 80 referring generally to value；
In load level η > B%, determine loading level for heavy duty.
(4) voltage range bound and power factor limit value in the case of three kinds of setting underloading, often load and heavy duty, and according to negative
Load degree selects voltage range and power factor limit value:
It is at light load, to be arranged between voltage control zone as (U in loading level1,U2), setting power factor controlling limit value isU1Generally taking reference value is 222V；U2Generally taking reference value is 227V；Generally take reference value for lag 0.97；
When loading level is often to carry, it is arranged between voltage control zone as (U3,U4), setting power factor controlling limit value isU3Generally taking reference value is 227V；U4Generally taking reference value is 230V；Generally taking reference value is advanced 0.97；
It is when overloaded, to be arranged between voltage control zone as (U in loading level5,U6),；U5Generally taking reference value is 230V；U6
Generally taking reference value is 232V；Generally taking reference value is advanced 0.93.
(5) according to voltage range corresponding with determining loading level and power factor limit value, switching is carried out to capacitor
Control:
Step 1, enabling the voltage range upper limit corresponding with the loading level determined is U7, voltage range lower limit is U8, power because
Counting limit value isDefinition has put into capacitor group quantity k=1,2 ..., m, and enabling the initial value of k is the electricity currently put into
Container group number n；Definition line voltage is U, and power factor is
Wherein m is capacitor group total quantity.
Step 2, judge U >=U8It is whether true, it is performed the next step if setting up suddenly, it is no to then follow the steps 5；
Step 3, judge U≤U7It is whether true, it is performed the next step if setting up suddenly, it is no to then follow the steps 6；
Step 4, judgeWhether true, controlling if setting up terminates, no to then follow the steps 9；
Step 5, judge whether k >=m is true, controlling if setting up terminates, no to then follow the steps 7；
Step 6, judge whether k > 0 is true, then follow the steps (8) if setting up, otherwise control terminates；
Step 7, a group capacitor, k=k+1, return step 2 are put into；
Step 8, a group capacitor, k=k-1, return step 3 are exited；
Step 9, judge whether k >=m is true, controlling if setting up terminates, and otherwise performs the next step rapid；
Step 10, a group capacitor, k=n+1 are put into；
Step 11, judge U≤U7Whether true, otherwise the return step 4 if setting up exits a group capacitor, control knot
Beam.
Below using a 10kV distribution wire as example, compares traditional compensation capacitor constant power factor and control and this
The control effect of embodiment method, its step are as follows:
(1) it obtains the line voltage of each distribution transformer on 10kV distribution line, line current, power factor, currently put into
Capacitor group number (having put into capacitor group quantity), each reactive compensation point capacitor group total quantity (capacitor group total quantity) and
Single group capacitor compensation capacity SNEqual parameter informations, parameter information are as follows:
(2) as shown in the table, the load level η of each reactive compensation point is calculated according to formula, and then true based on load level η
Fixed load degree:
| Compensation point number | Load level η | Load type |
| 1 | 57.7% | Often carry |
| 2 | 57.8% | Often carry |
| 3 | 58% | Often carry |
| 4 | 58.1% | Often carry |
| 5 | 58.1% | Often carry |
(3) as shown above, the loading level of five reactive compensation points is normal load, then the voltage range of reactive compensation point
For (227V, 230V), power factor (PF) limit value is advanced 0.97；
(4) according to the line voltage and power factor and voltage range obtained in the previous step (227V, 230V) acquired
With power factor (PF) limit value advanced 0.97, switching control is carried out to capacitor, specific switching control process is with reference in each embodiment
It is described in detail, which is not described herein again.
The compensating capacitor switching capacity comparison of traditional control method and this method is as shown in the table:
And the active loss of traditional control method is 54kW, and the active loss of this method is 23kW, improves capacitor benefit
With the saving energy and decreasing loss benefit of efficiency and power distribution network.
As shown in figure 4, the node voltage under traditional control method is low compared to the node voltage under control method of the present invention, into
And this method is able to ascend low-voltage regulation effect.
It should be understood that although each step in the flow chart of Fig. 1 to Fig. 3 is successively shown according to the instruction of arrow,
But these steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly state otherwise herein, these
There is no stringent sequences to limit for the execution of step, these steps can execute in other order.Moreover, Fig. 1 is into Fig. 3
At least part step may include that perhaps these sub-steps of multiple stages or stage are not necessarily same to multiple sub-steps
One moment executed completion, but can execute at different times, and the execution in these sub-steps or stage sequence is also not necessarily
Be successively carry out, but can at least part of the sub-step or stage of other steps or other steps in turn or
Alternately execute.
In one embodiment, as shown in figure 5, providing a kind of capacitor switching control device, comprising:
Switching control module 510, for combining capacitor group total quantity and having put into capacitor group quantity, based on the first ratio
To result, the second comparison result and third comparison result, switching control is carried out to each group capacitor of reactive compensation point；
First comparison result is to compare the upper limit of line voltage and voltage range to obtain；Second comparison result is to compare line voltage
It is obtained with the lower limit of voltage range；Third comparison result is to compare power factor to obtain with power factor limit value；Voltage range and
Power factor limit value is to be arranged to obtain according to the loading level of reactive compensation point.
In a specific example, switching control module 510 is used for:
When on-Line Voltage is less than the lower limit of voltage range and has put into capacitor group quantity less than capacitor group total quantity,
The capacitor of first group of number is put into, until line voltage is greater than or equal to the lower limit of voltage range；
When on-Line Voltage is greater than the upper limit of voltage range and has put into capacitor group quantity greater than zero, second group of number is exited
Capacitor, until line voltage be less than or equal to voltage range the upper limit；
On-Line Voltage is in the range of voltage range, the power factor of reactive compensation point is less than power factor limit value and
When putting into capacitor group quantity less than capacitor group total quantity, following steps are repeated up to the power factor of reactive compensation point
More than or equal to power factor limit value:
Put into the capacitor of third group number；
Judge whether line voltage is less than or equal to the upper limit of voltage range；
If it is not, exiting the capacitor of the 4th group of number and stopping executing.
In a specific example, first group of number, second group of number, third group number and the 4th group of number are 1.
In a specific example, further includes:
Setup module, for voltage range and power factor limit value to be arranged according to loading level；Loading level is according to nothing
The load level of function compensation point determines.
In a specific example, capacitor group total quantity is the basic data collected from reactive compensation point；Line
Voltage, power factor and to have put into capacitor group quantity be the operation data collected from reactive compensation point.
In a specific example, operation data further includes line current；Basic data further includes that distribution transformer is secondary
Side rated current；
Further include:
Load level module obtains water load for the quotient based on line current and distribution transformer secondary side rated current
It is flat；
Loading level module, for determining loading level according to load level.
In a specific example, loading level module includes:
Load level determines section module, determines section for load level to be arranged；
Loading level determining module determines section for the load level according to locating for load level, determines loading level.
Load level determines that section includes: greater than 20% and to be less than less than or equal to 20% in one of the embodiments,
Equal to 80%, and it is greater than 80%；
Loading level determining module is used for:
When load level is less than or equal to 20%, determine loading level for underloading；
When load level is greater than 20% and is less than or equal to 80%, determine that loading level is often to carry；
When load level is greater than 80%, determine loading level for heavy duty.
Setup module is used in one of the embodiments:
Loading level be at light load, be arranged voltage range lower limit be 222V, upper limit 227V；Power factor is arranged to limit
Value is lag 0.97；
When loading level is often to carry, the lower limit that voltage range is arranged is 227V, upper limit 230V；Power factor is arranged to limit
Value is advanced 0.97；
Loading level be when overloaded, be arranged voltage range lower limit be 230V, upper limit 232V；Power factor is arranged to limit
Value is advanced 0.93.
Specific restriction about capacitor switching control device may refer to above for capacitor switching control method
Restriction, details are not described herein.Modules in above-mentioned capacitor switching control device can be fully or partially through software, hard
Part and combinations thereof is realized.Above-mentioned each module can be embedded in the form of hardware or independently of in the processor in computer equipment,
It can also be stored in a software form in the memory in computer equipment, execute the above modules in order to which processor calls
Corresponding operation.
In one embodiment, a kind of computer equipment, including memory and processor are provided, is stored in memory
Computer program, the processor realize the step of capacitor switching control method in the various embodiments described above when executing computer program
Suddenly.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
The step of capacitor switching control method in the various embodiments described above is realized when machine program is executed by processor.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Instruct relevant hardware to complete by computer program, computer program to can be stored in a non-volatile computer readable
It takes in storage medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, this Shen
Please provided by any reference used in each embodiment to memory, storage, database or other media, may each comprise
Non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Above embodiments only express the several embodiments of the application, and the description thereof is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from the application design, various modifications and improvements can be made, these belong to the protection scope of the application.
Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of capacitor switching control method characterized by comprising
In conjunction with capacitor group total quantity and put into capacitor group quantity, based on the first comparison result, the second comparison result and
Third comparison result carries out switching control to each group capacitor of reactive compensation point；
First comparison result is to compare the upper limit of line voltage and voltage range to obtain；Second comparison result is to compare line
The lower limit of voltage and the voltage range obtains；The third comparison result is to compare power factor to obtain with power factor limit value
It arrives；The voltage range and the power factor limit value are to be arranged to obtain according to the loading level of the reactive compensation point.
2. capacitor switching control method according to claim 1, which is characterized in that in conjunction with capacitor group total quantity and
Capacitor group quantity is put into, the first comparison result, the second comparison result and third comparison result are based on, to reactive compensation point
Each group capacitor carries out the step of switching control and includes:
It is less than the lower limit of the voltage range and the capacitor group quantity that put into less than the capacitor in the line voltage
When group total quantity, the capacitor of first group of number is put into, until the line voltage is greater than or equal under the voltage range
Limit；
The line voltage be greater than the upper limit of the voltage range and it is described put into capacitor group quantity greater than zero when, exit
The capacitor of second group of number, until the line voltage is less than or equal to the upper limit of the voltage range；
The line voltage in the range of voltage range, the power factor of the reactive compensation point be less than the power because
Number limit values and described when having put into capacitor group quantity less than the capacitor group total quantity, repeat following steps until
The power factor of the reactive compensation point is greater than or equal to the power factor limit value:
Put into the capacitor of third group number；
Judge whether the line voltage is less than or equal to the upper limit of the voltage range；
If it is not, exiting the capacitor of the 4th group of number and stopping executing.
3. capacitor switching control method according to claim 2, which is characterized in that first group of number, described second
Group number, the third group number and the 4th group of number are 1.
4. according to claim 1 to capacitor switching control method described in 3 any one, which is characterized in that combining capacitor
Device group total quantity and capacitor group quantity is put into, has been based on the first comparison result, the second comparison result and third comparison result,
It is further comprised the steps of: before the step of carrying out switching control to each group capacitor of reactive compensation point
According to loading level, the voltage range and the power factor limit value are set；The loading level is according to described idle
The load level of compensation point determines.
5. according to capacitor switching control method described in claim 4 any one, which is characterized in that the capacitor group is total
Quantity is the basic data collected from the reactive compensation point；It the line voltage, the power factor and described has put into
Capacitor group quantity is the operation data collected from the reactive compensation point.
6. capacitor switching control method according to claim 5, which is characterized in that the operation data further includes line electricity
Stream；The basic data further includes distribution transformer secondary side rated current；
It is further comprised the steps of: before the step of voltage range and the power factor limit value are set according to loading level
Quotient based on the line current and the distribution transformer secondary side rated current, obtains the load level；
According to the load level, the loading level is determined.
7. capacitor switching control method according to claim 6, which is characterized in that according to load level, determine load
The step of degree includes:
Load level is set and determines section；
The load level according to locating for the load level determines section, determines the loading level.
8. a kind of capacitor switching control device, which is characterized in that described device includes:
Switching control module, for combining capacitor group total quantity and put into capacitor group quantity, be based on the first comparison result,
Second comparison result and third comparison result carry out switching control to each group capacitor of reactive compensation point；
First comparison result is to compare the upper limit of line voltage and voltage range to obtain；Second comparison result is to compare line
The lower limit of voltage and the voltage range obtains；The third comparison result is to compare power factor to obtain with power factor limit value
It arrives；The voltage range and the power factor limit value are to be arranged to obtain according to the loading level of the reactive compensation point.
9. a kind of computer equipment, including memory and processor, the memory are stored with computer program, feature exists
In the step of processor realizes any one of claims 1 to 7 the method when executing the computer program.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of method described in any one of claims 1 to 7 is realized when being executed by processor.
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| CN201811151477.4A CN109245119A (en) | 2018-09-29 | 2018-09-29 | capacitor switching control method and device |
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| CN201811151477.4A CN109245119A (en) | 2018-09-29 | 2018-09-29 | capacitor switching control method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165680A (en) * | 2019-05-09 | 2019-08-23 | 海南电网有限责任公司文昌供电局 | Passive power distribution net voltage control method, device, control equipment and storage medium |
| CN111244970A (en) * | 2020-02-28 | 2020-06-05 | 广东华利源电气设备有限公司 | Reactive compensation control device and control method thereof |
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| CN2295288Y (en) * | 1997-03-28 | 1998-10-21 | 重庆亚能电器有限责任公司 | Reactive power automatic compensating box for civil buildings |
| CN103606932A (en) * | 2013-08-23 | 2014-02-26 | 华南理工大学 | Load-related automatic control method of low-voltage dynamic reactive compensation capacitor |
| CN103762606A (en) * | 2014-01-17 | 2014-04-30 | 华南理工大学 | Control method for low-voltage intelligent capacitors of multi-step distribution network |
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| CN2295288Y (en) * | 1997-03-28 | 1998-10-21 | 重庆亚能电器有限责任公司 | Reactive power automatic compensating box for civil buildings |
| CN103606932A (en) * | 2013-08-23 | 2014-02-26 | 华南理工大学 | Load-related automatic control method of low-voltage dynamic reactive compensation capacitor |
| CN103762606A (en) * | 2014-01-17 | 2014-04-30 | 华南理工大学 | Control method for low-voltage intelligent capacitors of multi-step distribution network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110165680A (en) * | 2019-05-09 | 2019-08-23 | 海南电网有限责任公司文昌供电局 | Passive power distribution net voltage control method, device, control equipment and storage medium |
| CN110165680B (en) * | 2019-05-09 | 2021-09-17 | 海南电网有限责任公司文昌供电局 | Passive power distribution network voltage control method, device, control equipment and storage medium |
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