CN207939211U - Distributed power generation pressure regulation filtering system - Google Patents
Distributed power generation pressure regulation filtering system Download PDFInfo
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- CN207939211U CN207939211U CN201820301251.7U CN201820301251U CN207939211U CN 207939211 U CN207939211 U CN 207939211U CN 201820301251 U CN201820301251 U CN 201820301251U CN 207939211 U CN207939211 U CN 207939211U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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
- Y02E40/40—Arrangements for reducing harmonics
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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Abstract
The utility model discloses a kind of distributed power generation pressure regulation filtering system, distributed power generation pressure regulation filtering system includes signal acquisition module and the voltage regulating module and filter module that are connected between load and distribution transformer on key node；Signal acquisition module is used to acquire busbar voltage, electric current and the additional key node voltage signal between load and distribution transformer；Voltage regulating module includes the transformer of voltage regulator and at least 2 built-in embedded-type electric pressure sensors, and transformer passes through SCR control switching by voltage regulator；Filter module includes the filter controller of filter and the control filter switching.The utility model achievees the purpose that voltage stabilizing and filtering by the switching to multiple transformers and filter, and its regulating power may be up to 1000kVA, voltage total harmonic distortion factor is less than 4%, is suitable for single-phase, two-phase and three-phase electricity model.
Description
Technical field
The utility model is related to intelligent pressure regulating field more particularly to a kind of distributed power generation pressure regulation filtering systems.
Background technology
As the problems such as global energy shortage and environmental pollution becomes increasingly conspicuous, renewable energy power generation total amount is significantly increased,
Solar energy resources are abundant, widely distributed, are most potential regenerative resources, solar energy power generating is because of its cleaning, peace
Entirely, the features such as convenient, efficient, it has also become countries in the world common concern and the new industry given priority to.
But the access of more and more distribution type renewable energies, huge challenge is formd to administration of power networks, it is most prominent
The problem of going out includes voltage fluctuation and the decline of power quality.Voltage fluctuation includes the fluctuation of amplitude and the fluctuation of frequency, wherein
The fluctuation of amplitude can only ensure the stabilization of voltage by local regulation measure；Frequency fluctuation is mainly shown as harmonic wave, but is being distributed
In formula photovoltaic generating system, inputing power is directly accessed distribution transformer, and system is smaller, in this system, by inverter and
The harmonic content that transformer generates is relatively high.With the raising that user requires power quality, to photovoltaic power station
Harmonic wave control is increasingly important.
Currently, after power distribution network accesses distributed energy, general ripe voltage stabilizing technique includes following 4 kinds：
1. extended network：The short-circuit capacity of existing network is poor, is unfavorable for more cable accesses.Energy is extended to network
Short-circuit capacity is promoted, still, extended network is expensive, is not a kind of scheme of effective burning voltage；In addition, extension local network
Network can not solve the problems, such as voltage peak.
2. reactive-load compensation：This method centering pressure or high-pressure system are highly effective, more suitable for inductive load；For containing phase
It is expensive when a large amount of reactive power compensation of low-pressure system needs of ratio resistive load.In addition, a large amount of idle input,
System load is improved, the efficiency of electricity generation system is reduced.
3. on-load voltage regulating switch：It is an effectively adjusting distribution network voltage that on-load voltage regulating switch is installed on distribution transformer
Scheme because tap changer installation on the transformer, the load capacity of network can be improved with Central Regulation voltage.But it should
Scheme has 2 drawbacks：Three-phase balanced system can only be adjusted, the transformer without tap changer that runs at present must be replaced all.
4. low pressure regulating system：The system can be adjusted to single-phase, and system may be mounted at the feeder line of different levels
On, it can effectively be adjusted whether no matter threephase load balances.The distribution transformer run at present can be continuing with.
In conclusion low pressure regulating system be distributed energy access when burning voltage preferred plan.But current
The regulating power of low pressure regulating system is relatively low, is also insufficient for the demand of user.
Provide that in 380V, 6KV and 10KV distribution, voltage total harmonic distortion factor must according to national standard GB/T 14549-1993
5%, 4% and 4% must be respectively smaller than.Harmonic wave control can selectively inhibit specific distribution by the design preferences of filter
Unwanted harmonics content, while pollution of user's electrical equipment to power grid can be blocked.
Therefore, low pressure regulating system can be improved and develops a kind of voltage stabilizing accessed specifically for distributed energy
Filtering system.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model discloses a kind of distributed power generation pressure regulation filtering system,
Its regulating power may be up to 1000kVA, voltage total harmonic distortion factor is less than 4%, is suitable for single-phase, two-phase and three-phase electricity model.
A kind of distributed power generation pressure regulation filtering system disclosed by the utility model, including signal acquisition module and be connected on
The voltage regulating module and filter module on key node between load and distribution transformer；Signal acquisition module is loaded for acquiring
Busbar voltage, electric current between distribution transformer and additional key node voltage signal；Voltage regulating module becomes including at least 2
Depressor, filter module include filter, and transformer and filter are controlled by intelligent controller, intelligent controller and signal acquisition
Module connects, and the signal for being acquired according to signal acquisition module calculates the voltage parameter and filter that transformer should export
The filtering parameter that should be exported, to control the switching of transformer and filter.
In the above-mentioned technical solutions, entire pressure regulation filtering system uses modularized design, user that can only configure as needed
Voltage regulation function or filter function or pressure regulation filter function；Pressure regulation and filtering algorithm of the intelligent controller using routine, according to
The filtering parameter that the voltage parameter and filter that the real-time calculating transformer of signal of acquisition should export should export, to control
The method of operation of transformer and filter, whole system reach voltage stabilizing and filter by the switching to multiple transformers and filter
The purpose of wave, regulating power may be up to 1000kVA, voltage total harmonic distortion factor is less than 4%, is suitable for single-phase, two-phase and three
Mutually electric model.
Further, signal acquisition module includes current sensor and voltage sensor；Current sensor is connected on load
Between distribution transformer, for acquiring the bus current signal between load and distribution transformer；Voltage sensor is connected in parallel on
Between load and distribution transformer, for acquiring bus voltage signal and additional key section between load and distribution transformer
The voltage signal of point.
Further, signal conversion module and computing module are equipped in intelligent controller, signal conversion module will be for that will believe
The analog signal of number acquisition module acquisition is converted to digital signal, and computing module is answered for calculating transformer according to digital signal
The filtering parameter that the voltage parameter and filter of the output should export, consequently facilitating intelligent controller control transformer and filtering
The switching of device.
Further, intelligent controller includes voltage regulator and filter controller connected to it, and voltage regulating module includes
The transformer of at least 2 built-in embedded-type electric pressure sensors, these transformers pass through SCR control by a voltage regulator
Switching；Filter controller is connect with filter, the switching for controlling the filter.
In the above-mentioned technical solutions, voltage regulator calculates all transformers according to the signal that signal acquisition module acquires
The voltage parameter that should be exported puts into order or excision order to silicon-controlled transmission, and input order and excision order are mutual indepedent,
It is respectively sent to silicon-controlled, by the switching of each transformer of SCR control, silicon-controlled component velocity of opening is fast, and switching is efficient；Electricity
Pressure adjuster also acquires the voltage sensor signals being embedded in transformer, judges the time of switching order so that transformer is thrown
The generation of voltage dip, current fluctuation and harmonic wave will not be caused by cutting；It 2 transformers are at least set in voltage regulating module can improve and be
The resolution ratio and transformation amplitude of system realize the purpose of voltage stabilizing by selectively increasing or decreasing the switching of these transformers；Filter
The filtering parameter that wave controller is calculated according to the signal that signal acquisition module acquires sends control command, control to filter
The method of operation of filter.
Further, transformer and it is silicon-controlled between be equipped with contactor, in the present invention, one it is silicon-controlled can be down to
A contactor is controlled less.
In the above-mentioned technical solutions, contactor and it is silicon-controlled belong to switching device, silicon-controlled component velocity of opening is fast, will not produce
Raw electric spark, when work, are noiseless, and driving current is small, is easy to signal and directly drives, but its antisurge overload etc. can force difference, easily burn
It ruins, there is leakage current, power supply is will appear when driving low-power load and closes not dead situation；It is slow that contactor opens component velocity, but it can
By property height, influenced by surge current small, break-make characteristic is good, absolutely not leakage current the case where, the two is used in combination, it can be achieved that transformer
Open that component velocity is fast, is influenced the advantages that small, break-make characteristic is good by surge current.
Further, protection switch, protection switch connection report are parallel on the major loop that load and distribution transformer are formed
Alarm device；When transformer and it is silicon-controlled between be arranged contactor when, protection switch connect with contactor.When a certain transformer fault
When, protection switch is automatic to be disconnected, and is alarmed, and the case where protecting equipment of itself, also user is facilitated to pinpoint the problems in time.
Further, by-pass switch is equipped in filter, by-pass switch connects warning device.It, will when filter failure
It plays the role of protection from circuit separation, and alarms, and user is facilitated to pinpoint the problems in time.
Further, the distributed power generation pressure regulation filtering system further includes switching control module, switching control module packet
Manual switch and automatic switch are included, switching control module connect the switching of both control with transformer and filter.
In the above-mentioned technical solutions, when entire distributed power generation pressure regulation filtering system or in which some device need to safeguard
When, manually or automatically it can be detached from system, do not influence the normal operation of whole system.
Further, the circuit between load and distribution transformer is one kind in single-phase electricity, two-phase electricity or three-phase electricity.
The advantageous effect of above-mentioned distributed power generation pressure regulation filtering system is：
1. using modularized design, user can only configure voltage regulation function or filter function or pressure regulation filtering work(as needed
Can, the switching by selectively increasing or decreasing transformer realizes the purpose of voltage stabilizing；
2. regulating power may be up to 1000kVA, voltage total harmonic distortion factor is less than 4%, is suitable for single-phase, two-phase and three-phase
Electric model；
3. voltage regulation limits are the 6% of rated value, differential 1.5%；
4. configurable voltage adjusts rate range and delay time, the preferential selection peak of intelligence, minimum, average value and
Priority；
5. supporting key node selection, configuration flexible；
6. supporting power carrier communication, GPRS, UMTS；
7. being worked at the same time with distribution transformer, it does not interfere with each other；
8. convenient for integrated Power Quality Detection (I EC 6199-2-2) and failure logging.
Description of the drawings
Fig. 1 is the structure diagram of distributed power generation pressure regulation filtering system provided by the utility model.
In figure, 1, load；2, distribution transformer；3, transformer；4, filter；5, silicon-controlled；6, voltage regulator；7, it filters
Wave controller；8, filter.
Specific implementation mode
The utility model is described further below in conjunction with the accompanying drawings.
The present embodiment is specifically described by taking single-phase electricity as an example, as shown in Figure 1, distributed power generation pressure regulation filtering system includes
Signal acquisition module, voltage regulating module and filter module；Signal acquisition module includes current sensor and voltage sensor, and electric current passes
Sensor is connected between load and distribution transformer, for acquiring the bus current signal between load and distribution transformer, electricity
Pressure sensor is connected in parallel between load and distribution transformer, for acquiring the bus voltage signal between load and distribution transformer
And the voltage signal of additional key node, the signal of signal acquisition module acquisition is analog signal；Voltage regulating module and filtering
Block coupled in series is between load 1 and distribution transformer 2 on firewire key node；Voltage regulating module is by least 2 intelligent small transformations
Device 3 is composed in series, preferably more, can improve the resolution ratio and transformation amplitude of system, embedded voltage built in these transformers 3
Sensor；Filter module includes filter 8, and filter 8 is at least 2, and transformer 3 and the series connection access of filter 8 load 1 and match
Between piezoelectric transformer 2 on the key node of firewire；The switching of transformer 3 and filter 8 is controlled by intelligent controller, intelligent control
Device is connect with signal acquisition module, and the signal for being acquired according to signal acquisition module calculates the voltage that transformer should export
The filtering parameter that parameter and filter should export, to control the switching of all transformers and filter.
Intelligent controller includes voltage regulator 6 and filter controller 7, and the two connects common current, voltage value, and is
Intelligent controller；Transformer 3 is controlled by voltage regulator 6 by silicon-controlled 5, by selectively increasing or decreasing these transformations
The switching of device 3 realizes that the purpose of voltage stabilizing, filter 8 control switching by filter controller 7.Voltage regulator 6 and filter controller
Signal conversion module and computing module are equipped with inside 7, the simulation that signal conversion module is used to acquire signal acquisition module is believed
Digital signal number is converted to, computing module is used to calculate the voltage parameter or filtering that transformer should export according to digital signal
The filtering parameter that device should export is adjusted consequently facilitating intelligent controller controls the switching of transformer and filter in computing module
Pressure and the algorithm of filtering are conventional algorithm.
Signal acquisition is completed by current sensor, voltage sensor, and voltage regulator 6 and filter controller 7 are responsible for signal
Conversion is calculated with analysis；The voltage parameter that voltage regulator 6 is calculated according to computing module sends input life to silicon-controlled 5
It enables or excision is ordered, input order and excision order independently of each other, are respectively sent to accordingly may be used according to the order for configuring different
Silicon 4 is controlled, the switching for controlling corresponding transformer 3 by silicon-controlled 5；Filter controller 7 is joined according to the filtering that computing module is calculated
Number sends control command to filter 8, controls the method for operation of filter 8.
The voltage sensor and current sensor preferred voltage mutual inductor and current transformer mentioned in the utility model, electricity
It presses mutual inductor and current transformer can be with scaling transformation voltage and current, and isolated high voltage system can be used for, ensure
The safety of the person and equipment.On the basis of the present embodiment preferably, between transformer 3 and silicon-controlled 5 be equipped with contactor 4, one
A silicon-controlled 5 can control multiple contactors 4, realize that the component velocity of opening of transformer is influenced small, break-make characteristic soon, by surge current
The advantages that good.
On the basis of the present embodiment preferably, protection switch is parallel on the major loop of load 1 and distribution transformer 2,
Protection is switched and is connected with contactor 4, and protection switch connection warning device, when a certain transformer fault, protection is switched from dynamic circuit breaker
It opens, and alarms.In addition, being equipped with by-pass switch in filter 8, by-pass switch connects warning device, when filter failure, by it
It detaches, and alarms from circuit.
Whole system may be used switching control module and directly control, and switching control module includes manual switch and opens automatically
It closes, switching control module connect the switching by both contactor control with transformer and filter.When system or in which some
When device needs to safeguard, manually or automatically it can be detached from system, do not influence the normal use of system.
Circuit between load 1 and distribution transformer 2 can also be two-phase electricity or three-phase electricity.When circuit is single-phase electricity,
Voltage regulating module, filter module, signal acquisition module are positioned only on a firewire；When circuit is two-phase electricity, on two firewires
Voltage regulating module, filter module and signal acquisition module are all set；When circuit is three-phase electricity, pressure regulation mould is all set on three firewires
Block, filter module and signal acquisition module.
The advantageous effect of distributed power generation pressure regulation filtering system provided by the utility model is：
1. using modularized design, user can only configure voltage regulation function or filter function or pressure regulation filtering work(as needed
Can, the switching by selectively increasing or decreasing transformer realizes the purpose of voltage stabilizing；
2. regulating power can determine that regulating power may be up to 1000kVA according to the quantity of configuration transformer and filter, electricity
It presses total harmonic distortion factor to be less than 4%, is suitable for single-phase, two-phase and three-phase electricity model；
3. by configuring voltage regulator embedded software parameter setting voltage regulation limits and differential, voltage is made to adjust model
It is the 6% of rated value to enclose, and differential is 1.5%；
4 adjust voltage class quantity and delay time, intelligence by configuring voltage regulator embedded software parameter setting
Preferential selection peak, minimum, average value and priority；
5. supporting key node selection, configuration flexible；
6. supporting power carrier communication, GPRS, UMTS；
7. being worked at the same time with distribution transformer, it does not interfere with each other；
8. convenient for integrated Power Quality Detection (I EC 6199-2-2) and failure logging.
Embodiment described above only expresses one or more embodiments of the utility model, and description is more specific
With it is detailed, but it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for this field
Those of ordinary skill for, without departing from the concept of the premise utility, various modifications and improvements can be made, this
Belong to the scope of protection of the utility model.
Claims (9)
1. a kind of distributed power generation pressure regulation filtering system, which is characterized in that including signal acquisition module and be connected on load (1)
The voltage regulating module and filter module on key node between distribution transformer (2)；Signal acquisition module is loaded for acquiring
Busbar voltage, electric current between distribution transformer and additional key node voltage signal；Voltage regulating module becomes including at least 2
Depressor (3), filter module include filter (8), and transformer and filter are controlled by intelligent controller, intelligent controller and letter
The connection of number acquisition module, the signal for being acquired according to signal acquisition module calculate the voltage parameter that transformer should export and
The filtering parameter that filter should export, to control the switching of transformer and filter.
2. distributed power generation pressure regulation filtering system according to claim 1, which is characterized in that signal acquisition module includes electricity
Flow sensor and voltage sensor；Current sensor is connected between load and distribution transformer, for acquiring load and distribution
Bus current signal between transformer；Voltage sensor is connected in parallel between load and distribution transformer, for acquire load and
The voltage signal of bus voltage signal and additional key node between distribution transformer.
3. distributed power generation pressure regulation filtering system according to claim 1, which is characterized in that be equipped with letter in intelligent controller
Number conversion module and computing module, signal conversion module are used to the analog signal that signal acquisition module acquires being converted to digital letter
Number, computing module is used to calculate the voltage parameter that transformer should export and the filter that filter should export according to digital signal
Wave parameter, consequently facilitating the switching of intelligent controller control transformer and filter.
4. distributed power generation pressure regulation filtering system according to claim 1, which is characterized in that intelligent controller includes voltage
Adjuster (6) and filter controller connected to it (7), voltage regulating module include at least 2 built-in embedded-type electric pressure sensors
Transformer, these transformers control switching by a voltage regulator by silicon-controlled (5)；Filter controller connects with filter
It connects, the switching for controlling filter.
5. distributed power generation pressure regulation filtering system according to claim 4, which is characterized in that transformer and it is silicon-controlled between
Equipped with contactor (4), one contactor of a silicon-controlled at least control.
6. distributed power generation pressure regulation filtering system according to claim 5, which is characterized in that load and distribution transformer
Protection switch is parallel on major loop, protection switch is connected with contactor, protection switch connection warning device.
7. distributed power generation pressure regulation filtering system according to claim 1, which is characterized in that be equipped with bypass in filter and open
It closes, by-pass switch connects warning device.
8. distributed power generation pressure regulation filtering system according to claim 1, which is characterized in that the distributed power generation pressure regulation
Filtering system further includes switching control module, and switching control module includes manual switch and automatic switch, switching control module with
The switching of transformer and filter connection control the two.
9. distributed power generation pressure regulation filtering system according to claim 1, which is characterized in that load and distribution transformer it
Between circuit be single-phase electricity, two-phase electricity or three-phase electricity in one kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820301251.7U CN207939211U (en) | 2018-03-05 | 2018-03-05 | Distributed power generation pressure regulation filtering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820301251.7U CN207939211U (en) | 2018-03-05 | 2018-03-05 | Distributed power generation pressure regulation filtering system |
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| CN207939211U true CN207939211U (en) | 2018-10-02 |
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ID=63653764
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233386A (en) * | 2018-03-05 | 2018-06-29 | 北京中能瑞泰电气有限公司 | Distributed power generation pressure regulation filtering system and method |
| CN112803847A (en) * | 2021-02-23 | 2021-05-14 | 中国商用飞机有限责任公司 | Distributed voltage regulation control system and method for generator |
-
2018
- 2018-03-05 CN CN201820301251.7U patent/CN207939211U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233386A (en) * | 2018-03-05 | 2018-06-29 | 北京中能瑞泰电气有限公司 | Distributed power generation pressure regulation filtering system and method |
| CN112803847A (en) * | 2021-02-23 | 2021-05-14 | 中国商用飞机有限责任公司 | Distributed voltage regulation control system and method for generator |
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