CN108599179A - A kind of Non Power Compensation Process - Google Patents
A kind of Non Power Compensation Process Download PDFInfo
- Publication number
- CN108599179A CN108599179A CN201810610478.4A CN201810610478A CN108599179A CN 108599179 A CN108599179 A CN 108599179A CN 201810610478 A CN201810610478 A CN 201810610478A CN 108599179 A CN108599179 A CN 108599179A
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- Prior art keywords
- compensation
- voltage change
- load
- reactive
- power compensation
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Classifications
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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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention discloses a kind of Non Power Compensation Process, belongs to reactive power compensation technology field.The method includes：Obtain load terminal voltage change direction and voltage change size；Determine that reactive-load compensation strategy, the reactive-load compensation strategy include compensation direction and compensation rate size according to voltage change direction and voltage change size, wherein compensation direction is determined according to voltage change direction, compensation rate size is determined according to voltage change size；Reactive power compensation device is output control signals to according to reactive-load compensation strategy, reactive power compensation device is arranged in load end；Judge whether load terminal voltage rises, if so, increasing compensation rate；If it is not, reducing compensation rate or compensating round about.This method determines compensation policy by detecting the variation of load terminal voltage, eliminates the use of current transformer, also avoids all and a series of problems for increasing current transformer and bringing, and quick and easy for installation, construction cost reduces, configure it is more convenient flexibly.
Description
Technical field
The present invention relates to reactive-load compensation fields, more particularly to a kind of Non Power Compensation Process.
Background technology
In power distribution network, the power of reactive power and power transmission line that power generator is sent out usually is insufficient in net greatly
Idle loss in the reactive requirement and system of the inductive loads such as motor, transformer, reactor, the fluorescent lamp of amount, thus it is past
It is reduced toward power factor of electric network decline, network system utilization rate is caused.In order to reduce active loss and voltage landing, reduce electric power
Loss in conveying improves the capacity and quality of power Transmission, usually all more for the safety of power grid, economically and efficiently run
Carry out reactive power compensation nearby or adjusting.It is widely used at present to be carried out by way of switching shunt capacitor (group)
Reactive-load compensation, principle are to first pass through monitoring line voltage distribution and electric current, calculate power factor；It is put into if power factor lags
Capacitance, if power factor in advance if cut off capacitance.
From the point of view of integrated system construction cost, operation management cost and runnability, Technique of Compensating Capacitance for Reactive
Development trend be on the basis of taking into account cost, operation is more reliable, and it is rapider, smooth, accurate that reactive power is adjusted, and compensation is more
Flexibly, efficiently, quickly, rationally.
Although reactive energy not charging, reactive power is high, and power factor (PF) will be small, and power factor (PF) is smaller, consumption
The absolute value of same active power, the electric current in circuit will increase, and line loss is brought to increase, and accelerate aging circuit etc. and ask
Topic.
Invention content
The object of the present invention is to provide a kind of Non Power Compensation Process, reduce cost.
To achieve the above object, the present invention provides following schemes：
A kind of Non Power Compensation Process, including：
Obtain load terminal voltage change direction and voltage change size；
Reactive-load compensation strategy, the reactive-load compensation plan are determined according to the voltage change direction and the voltage change size
Slightly include compensation direction and compensation rate size, wherein the compensation direction is determined according to the voltage change direction, according to described
Voltage change size determines the compensation rate size；
Reactive power compensation device, the reactive power compensation dress are output control signals to according to the reactive-load compensation strategy
It installs in load end；
Judge whether load terminal voltage rises, obtains judging result；
If the judging result indicates that the load terminal voltage rises, compensation rate is increased；
If the judging result indicates that the load terminal voltage declines, reduces compensation rate or compensate round about.
Optionally, the reactive power compensation device is provided with over-current detection circuit.
Optionally, load terminal voltage change direction and voltage change size are obtained, is specifically included：
Obtain voltage change direction and the voltage change size of load end three-phase electricity.
Optionally, it is respectively arranged with reactive power compensation device in the three-phase electricity of load end, the voltage of the three-phase electricity is logical
Different reactive power compensation devices is crossed to compensate respectively.
Optionally, the reactive power compensation device includes multiple compensation branches, and the reactive-load compensation strategy is multiple benefits
Repay the arbitrary combination of branch.
Optionally, the compensation rate of multiple compensation branches is identical.
Optionally, the compensation rate of multiple compensation branches is different.
Optionally, the compensation branch is capacitor.
According to specific embodiment provided by the invention, the invention discloses following technique effects：
1, Non Power Compensation Process provided by the invention determines compensation policy by detecting the variation of load terminal voltage,
To eliminate the use of current transformer, also avoids all and increase current transformer and a series of problems for bringing, peace
Convenient and efficient, construction cost reduction is filled, is configured more convenient flexible.
2, the present invention respectively compensates three-phase electricity by reactive power compensation device, and by multiple compensation branch
The switching reasonable combination on road obtains more reactive-load compensation gear with the setting of small number of compensation branch, can realize and be directed to
Property it is extremely strong, fining, high-precision phase splitting compensation, be particularly suitable for the unbalanced situation of severe three-phase and need to carry out idle work(
The case where rate compensates.In addition, the present invention can also realize the maximum of reactive power compensation planning and efficiency under the relatively low situation of input cost
Change.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the flow chart of the embodiment 1 of Non Power Compensation Process of the present invention.
Specific implementation mode
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 describes, 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.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Embodiment 1
Fig. 1 is the flow chart of the embodiment 1 of the real Non Power Compensation Process of the present invention.As described in Figure 1, the method packet
It includes：
Step 100：Obtain load terminal voltage change direction and voltage change size.
Step 200：Reactive-load compensation strategy, the nothing are determined according to the voltage change direction and the voltage change size
Work(compensation policy includes compensation direction and compensation rate size, wherein the compensation direction is determined according to the voltage change direction,
The compensation rate size is determined according to the voltage change size.
Step 300：Reactive power compensation device, the idle work(are output control signals to according to the reactive-load compensation strategy
Rate compensation device is arranged in load end.
Step 400：Judge whether load terminal voltage rises, obtains judging result.
Step 500：If judging result indicates that the load terminal voltage rises, compensation rate is increased.
Step 600：If judging result indicates that the load terminal voltage declines, reduces compensation rate or compensate round about.
This method is by first compensating, then measures, and by electronically, compensation and these actions measured can be very in short-term
Interior completion, so as to think that the variation of the voltage in this very short time is rather than the supply voltage due to caused by compensation
Caused by variation；If compensation is correct, the transmission electric current in circuit can become smaller, and pressure drop caused by circuit can also become smaller, to negative
Carrying the voltage at end will rise；Vice versa.The present embodiment is by constantly adjusting compensation policy, until load terminal voltage meets mark
It is accurate.
Non Power Compensation Process provided in this embodiment determines compensation policy by detecting the variation of load terminal voltage,
To eliminate the use of current transformer, also avoids all and increase current transformer and a series of problems for bringing, peace
Convenient and efficient, construction cost reduction is filled, is configured more convenient flexible.
Optionally, the reactive power compensation device is provided with over-current detection circuit.
Embodiment 2
As different from Example 1, the present embodiment is respectively arranged with reactive power compensation device in the three-phase electricity of load end,
The voltage of the three-phase electricity is compensated respectively by different reactive power compensation devices.By obtaining load end three-phase electricity
Voltage change direction and voltage change size, respectively compensate three-phase electricity, and the process of compensation is same as Example 1,
Wherein, the reactive power compensation device includes multiple compensation branches, and the reactive-load compensation strategy is multiple compensation
The arbitrary combination of branch.The compensation rate of multiple compensation branches is same or different.The compensation branch is capacitance
Device.
For example, the reactive power compensation device of each mutually electricity is each configured with 3 compensation branches, meanwhile, with target compensation essence
It spends and is used as unit compensation capacity, the compensation capacity of single-phase electricity container used in each branch presses 1,2,4 times of unit compensation capacity respectively
Ratio is configured；Alternatively, the compensation capacity of single-phase electricity container used in each branch is to repay 1 ratio of capacity to be configured.
For example, each phase electricity is each configured with 2 compensation branches, meanwhile, using target compensation precision as unit compensation capacity,
The compensation capacity of single-phase electricity container used in each branch is configured in the 1 of unit compensation capacity, 2 times of ratio respectively.
Above two preferred embodiment each contributes in the case of compensating branch setting negligible amounts, by institute
The switching reasonable combination for having compensation branch obtains more reactive-load compensation gear with the setting of small number of compensation branch, real
The maximization of reactive power compensation planning and efficiency under the relatively low situation of existing system input cost.
Embodiment 2 respectively compensates three-phase electricity by reactive power compensation device, and by multiple compensation branch
The switching reasonable combination on road obtains more reactive-load compensation gear with the setting of small number of compensation branch, can realize and be directed to
Property it is extremely strong, fining, high-precision phase splitting compensation, be particularly suitable for the unbalanced situation of severe three-phase and need to carry out idle work(
The case where rate compensates.In addition, the present embodiment can also realize reactive power compensation planning and efficiency most under the relatively low situation of input cost
Bigization.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
Principle and implementation of the present invention are described for specific case used herein, and above example is said
The bright method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, foundation
The thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of Non Power Compensation Process, which is characterized in that including：
Obtain load terminal voltage change direction and voltage change size；
Reactive-load compensation strategy, the reactive-load compensation strategy packet are determined according to the voltage change direction and the voltage change size
Include compensation direction and compensation rate size, wherein the compensation direction is determined according to the voltage change direction, according to the voltage
Variation size determines the compensation rate size；
Reactive power compensation device is output control signals to according to the reactive-load compensation strategy, the reactive power compensation device is set
It sets in load end；
Judge whether load terminal voltage rises, obtains judging result；
If the judging result indicates that the load terminal voltage rises, compensation rate is increased；
If the judging result indicates that the load terminal voltage declines, reduces compensation rate or compensate round about.
2. Non Power Compensation Process according to claim 1, which is characterized in that the reactive power compensation device setting
There is over-current detection circuit.
3. Non Power Compensation Process according to claim 1, which is characterized in that obtain load terminal voltage change direction and
Voltage change size, specifically includes：
Obtain voltage change direction and the voltage change size of load end three-phase electricity.
4. Non Power Compensation Process according to claim 3, which is characterized in that be respectively set in the three-phase electricity of load end
There are reactive power compensation device, the voltage of the three-phase electricity to be compensated respectively by different reactive power compensation devices.
5. Non Power Compensation Process according to claim 1, which is characterized in that the reactive power compensation device includes
Multiple compensation branches, the reactive-load compensation strategy are the arbitrary combination of multiple compensation branches.
6. Non Power Compensation Process according to claim 5, which is characterized in that the compensation rate of multiple compensation branches
It is identical.
7. Non Power Compensation Process according to claim 5, which is characterized in that the compensation rate of multiple compensation branches
It is different.
8. Non Power Compensation Process according to claim 5, which is characterized in that the compensation branch is capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810610478.4A CN108599179A (en) | 2018-06-15 | 2018-06-15 | A kind of Non Power Compensation Process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810610478.4A CN108599179A (en) | 2018-06-15 | 2018-06-15 | A kind of Non Power Compensation Process |
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| Publication Number | Publication Date |
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| CN108599179A true CN108599179A (en) | 2018-09-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715699A (en) * | 2013-12-02 | 2014-04-09 | 国家电网公司 | Low-voltage distribution network line reactive compensation device and compensation method |
| CN105406482A (en) * | 2015-12-07 | 2016-03-16 | 广东电网有限责任公司汕头供电局 | Voltage reactive control method and voltage reactive control system based on reactive compensation device |
| CN107453373A (en) * | 2017-09-12 | 2017-12-08 | 南京中探海洋物联网有限公司 | A kind of Non Power Compensation Process |
-
2018
- 2018-06-15 CN CN201810610478.4A patent/CN108599179A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715699A (en) * | 2013-12-02 | 2014-04-09 | 国家电网公司 | Low-voltage distribution network line reactive compensation device and compensation method |
| CN105406482A (en) * | 2015-12-07 | 2016-03-16 | 广东电网有限责任公司汕头供电局 | Voltage reactive control method and voltage reactive control system based on reactive compensation device |
| CN107453373A (en) * | 2017-09-12 | 2017-12-08 | 南京中探海洋物联网有限公司 | A kind of Non Power Compensation Process |
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Application publication date: 20180928 |