CN106961099A - A kind of DC distribution net busbar voltage control system and its control method - Google Patents
A kind of DC distribution net busbar voltage control system and its control method Download PDFInfo
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- CN106961099A CN106961099A CN201710209189.9A CN201710209189A CN106961099A CN 106961099 A CN106961099 A CN 106961099A CN 201710209189 A CN201710209189 A CN 201710209189A CN 106961099 A CN106961099 A CN 106961099A
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- bus
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- master server
- voltagerating
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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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The present invention relates to a kind of DC distribution net busbar voltage control system and its control method, belong to electric and electronic technical field.A kind of DC distribution net busbar voltage control system, including master server, home server, it is characterised in that：Home server is interconnected to form horizontal connector with master server, and home server is connected on dc bus by distributed power supply module, and dc bus is connected to AC network by AC/DC change of current modules, and master server is connected with AC/DC change of current modules；Home server is used to monitor the voltage on dc bus and responds the control instruction of master server；Master server is used to send control instruction to home server.This method is attached by home server with master server by the form of horizontal connector, form the network system in parallel, the common fluctuation on DC bus-bar voltage carries out feedback response, so not only increase the corresponding speed of whole system, moreover it is possible to maintain DC bus-bar voltage in allowed band.
Description
Technical field
The present invention relates to a kind of DC distribution net busbar voltage control system and its control method, belong to Power Electronic Technique
Field.
Background technology
Conventional AC power distribution network is faced with power supply capacity deficiency, user and requires continuous to the quality of power supply and power supply reliability
Many severe challenges such as raising, distributed power source access.
Flexible direct current power distribution network has than exchanging in the aspect such as transmit capacity, controllability, the quality of power supply and power supply reliability
The more excellent performance of distribution system.Flexible direct current power distribution network is widely paid close attention to and studied.
In conventional DC distribution net, the detecting and controlling system of lower floor can connect AC/DC transverters and distributed power source
The voltage that is detected at mouthful, power information upload to top level control device by unified communication port, and top level control device passes through meter
The information received, and automatic or manual send control instruction to lower floor detecting and controlling system then AC/DC is changed again
Stream device or distributed electrical source interface are controlled.Although such control system is with stronger reliability and controllability,
Due to needing substantial amounts of communication equipment and large-scale top level control equipment, therefore cost is higher and underaction.And due to depositing
Interconnection in vertical direction, it is relative complex on the control structure and response speed is slower, it is impossible to control direct current to match somebody with somebody well
The problems such as voltage pulsation of power network dc bus and trend are flowed to.
The flexibility and reliability for how strengthening DC distribution network operation are current problem encountered.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, proposing that a kind of direct current of fast response time is matched somebody with somebody
Power network busbar voltage control system and its control method.
The technical scheme that in order to solve the above-mentioned technical problem proposes of the present invention is：A kind of DC distribution net busbar voltage control
System, including master server, home server, the home server are interconnected to form horizontal connector with master server, institute
State home server to be connected on dc bus by distributed power supply module, dc bus is connected by AC/DC changes of current module
To AC network, the master server is connected with AC/DC change of current modules；
Home server is used to monitor the voltage on dc bus and responds the control instruction of master server；
Master server is used to send control instruction to home server.
It is of the invention to be using the beneficial effect of above-mentioned technical proposal：Home server and master server are passed through water by the present invention
The form of flat interconnection is attached, and forms the network system in parallel, carries out feedback sound to the fluctuation on DC bus-bar voltage jointly
Should, compared to vertical interconnection technique of the prior art, the present invention just can be changed directly by the AC/DC being connected with master server
Flow module regulates and controls to DC bus-bar voltage, and simultaneously by the distributed power supply module that is connected with home server by direct current
Power distribution network busbar voltage is maintained in allowed band.So not only increase the corresponding speed of whole system, moreover it is possible to which direct current is female
Line voltage is maintained in allowed band.
Additionally due to home server is attached with master server using horizontal connector mode, it is not necessary to top level control
Device, simplifies the structure of control system, has saved construction cost.
Another technical scheme in order to solve the above-mentioned technical problem proposing of the present invention is, DC distribution net busbar voltage
The voltage control method of control system, performs step as follows：
Step 1：Each monitoring server and the voltage data and power data for collecting dc bus；
Step 2：The data that the master server is monitored according to step 1 calculate the power flow and voltage status of dc bus；
Power flow parameter is used for being supplied to the dispatch command of master server to refer to；
Step 3：The voltage status in step 2 is determined whether in the range of the voltagerating of the dc bus, if the voltage
State does not perform step 4 then in the range of the voltagerating, is held if the voltage status is in the range of the voltagerating
Row step 7；
Step 4：Judge whether the AC/DC modules change of current module has adjustable allowance, if the AC/DC changes of current module has adjustable
Section allowance then performs step 5, and step 6 is performed if the AC/DC changes of current module is without adjustable allowance；
Step 5：The master server sends control instruction to adjust the output of AC/DC change of current modules so that AC/DC change of current modules
Output and DC bus-bar voltage coordinate, perform step 7；
Step 6：Judge the relation of DC bus-bar voltage and the voltagerating scope, DC bus-bar voltage is more than institute if detecting
The upper limit of voltagerating scope is stated, then reduces the power output of the distributed power supply module；
If detecting, DC bus-bar voltage is less than the lower limit of the voltagerating scope, improves the defeated of the cloth power module
Go out power, at the same time the energy-storage units in distributed power source enter discharge condition, perform step 7；
Step 7：Detect whether each module and server are normal, if then performing step 1, if otherwise performing step 8；
Step 8：Excision trouble unit is simultaneously alarmed.
The improvement of above-mentioned technical proposal is：In step 6,
In the case where DC bus-bar voltage is more than the upper limit of the voltagerating scope, if having in the distributed power supply module
Then the energy-storage units enter charged state to energy-storage units, if in the distributed power supply module without energy-storage units if do not operate；
In the case where DC bus-bar voltage is less than the lower limit of the voltagerating scope, if if in the distributed power supply module
In have energy-storage units then the energy-storage units enter discharge condition, if in the distributed power supply module without energy-storage units if do not grasp
Make.
It is of the invention to be using the beneficial effect of above-mentioned technical proposal：The state of present invention monitoring dc bus, and according to straight
DC distribution net busbar voltage is maintained permission model by the condition regulation AC/DC changes of current module and distributed power supply module for flowing bus
In enclosing.And because the master server and home server of DC distribution net busbar voltage control system use horizontal connector
Pattern, therefore fast response time, regulate and control more timely so that the DC distribution net busbar voltage control system regulated and controled with this method is transported
Row is more stable.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the schematic diagram of the DC distribution net busbar voltage control system of the embodiment of the present invention.
Fig. 2 is the signal of each server module in the DC distribution net busbar voltage control system of the embodiment of the present invention
Figure.
Fig. 3 is the operation shape of each server module in the DC distribution net busbar voltage control system of the embodiment of the present invention
State circulation figure.
Fig. 4 is the flow chart of the control method of the DC distribution net busbar voltage control system of the embodiment of the present invention.
Embodiment
Embodiment
A kind of DC distribution net busbar voltage control system of the present embodiment, as shown in figure 1, including master server, local
Server, home server is interconnected to form horizontal connector with master server, and home server passes through distributed power supply module
It is connected on dc bus, dc bus is connected to AC network, master server and the AC/DC changes of current by AC/DC change of current modules
Module is connected；
Home server is used to monitor the voltage on dc bus and responds the control instruction of master server；
Master server is used to send control instruction to home server.
As shown in Fig. 2 AC/DC current changer modules are connected between AC network and dc bus, including inverter unit
And control unit.Distributed power source is connected on dc bus by distributed power source interface module, including power electronics interface list
Member and control unit.Server module is divided into master server and home server, server module include processor unit and
Horizontal connector is formed between measuring unit, server.
As shown in figure 3, all servers have three kinds of running statuses to be respectively：Monitoring state, SBR, action shape
State.
The operation logic of three kinds of states is the institute if any home server monitors that dc bus has voltage to go wrong
There is home server to enter SBR；
Master server can actively enter SBR, and process during equivalent to system initialization, all home servers enter
Enter SBR and stop the detection function of home server, DC bus-bar voltage is monitored, and wait master server to send out
Go out control instruction；After master server sends control instruction to home server, master server enters monitoring state, home server
Into operating state；After local service area execution state, into monitoring state.
Master server module is connected with AC/DC modules, and home server module is connected with distributed power source interface module；Clothes
Business device has two kinds of control models.
Two kinds of control models are respectively normal mode and reforestation practices, and two kinds of control models are sent by server.It is conventional
Pattern refers to normal operating conditions.Reforestation practices, which refer to, detects failure, then alarm condition.It is to be repaired after alarm etc. to return to conventional mould
Formula.
As shown in figure 4, the execution step of the control method of said system is as follows：
Step 1：Each monitoring server and the voltage data and power data for collecting dc bus；
Step 2：The data that master server is monitored according to step 1 calculate the power flow and voltage status of dc bus；
Step 3：The voltage status in step 2 is determined whether in the range of the voltagerating of dc bus, if voltage status does not exist
Step 4 is then performed in the range of voltagerating, step 7 is performed if voltage status is in the range of voltagerating；
Step 4：Judge whether AC/DC modules mold changing block has adjustable allowance, held if AC/DC change of current modules have adjustable allowance
Row step 5, step 6 is performed if AC/DC changes of current module is without adjustable allowance；
According to the scope of the voltage-regulation allowance of direct current voltage bus, the scope of the voltage-regulation allowance of AC/DC change of current modules with
And the voltage rating of AC/DC change of current modules is compared, so that it is determined that could think there is adjustable allowance.For example, AC/DC moulds
Block transverter voltage rating is 1, and regulation tolerance is 0.95 ~ 1.05, if detecting DC bus-bar voltage 0.95 ~ 1.05
In the range of then have regulation allowance；Without regulation allowance if super go beyond the scope.
Step 5：Master server sends control instruction to adjust the output of AC/DC change of current modules so that AC/DC change of current modules
Output and DC bus-bar voltage coordinate, perform step 7；
Step 6：Judge the relation of DC bus-bar voltage and voltagerating scope, DC bus-bar voltage is more than voltage volume if detecting
Determine the upper limit of scope, then reduce the power output of distributed power supply module；
If detecting, DC bus-bar voltage is less than the lower limit of voltagerating scope, improves the output work for stating cloth power module
Rate, at the same time the energy-storage units in distributed power source enter discharge condition, perform step 7；
Step 7：Detect whether each module and server are normal, if then performing step 1, if otherwise performing step 8；
Step 8：Excision trouble unit is simultaneously alarmed.
In the step 6 of the present embodiment,
In the case where DC bus-bar voltage is more than the upper limit of voltagerating scope, if there is energy-storage units in distributed power supply module
Then energy-storage units enter charged state, if in distributed power supply module without energy-storage units if do not operate；
In the case where DC bus-bar voltage is less than the lower limit of voltagerating scope, if if having energy storage in distributed power supply module
Then energy-storage units enter discharge condition to unit, if in distributed power supply module without energy-storage units if do not operate.
The present invention is not limited to above-described embodiment.The technical scheme of all use equivalent formation, all falling within the present invention will
The protection domain asked.
Claims (3)
1. a kind of DC distribution net busbar voltage control system, including master server, home server, it is characterised in that：It is described
Home server is interconnected to form horizontal connector with master server, and the home server is connected by distributed power supply module
Onto dc bus, dc bus is connected to AC network, the master server and the AC/DC changes of current by AC/DC change of current modules
Module is connected；
Home server is used to monitor the voltage on dc bus and responds the control instruction of master server；
Master server is used to send control instruction to home server.
2. a kind of DC distribution net busbar voltage control based on DC distribution net busbar voltage control system described in claim 1
Method, it is characterised in that perform step as follows：
Step 1：Each monitoring server and the voltage data and power data for collecting dc bus；
Step 2：The data that the master server is monitored according to step 1 calculate the power flow and voltage status of dc bus；
Step 3：The voltage status in step 2 is determined whether in the range of the voltagerating of the dc bus, if the voltage
State does not perform step 4 then in the range of the voltagerating, is held if the voltage status is in the range of the voltagerating
Row step 7；
Step 4：Judge whether the AC/DC modules change of current module has adjustable allowance, if the AC/DC changes of current module has adjustable
Section allowance then performs step 5, and step 6 is performed if the AC/DC changes of current module is without adjustable allowance；
Step 5：The master server sends control instruction to adjust the output of AC/DC change of current modules so that AC/DC change of current modules
Output and DC bus-bar voltage coordinate, perform step 7；
Step 6：Judge the relation of DC bus-bar voltage and the voltagerating scope, DC bus-bar voltage is more than institute if detecting
The upper limit of voltagerating scope is stated, then reduces the power output of the distributed power supply module；
If detecting, DC bus-bar voltage is less than the lower limit of the voltagerating scope, improves the defeated of the cloth power module
Go out power, at the same time the energy-storage units in distributed power source enter discharge condition, perform step 7；
Step 7：Detect whether each module and server are normal, if then performing step 1, if otherwise performing step 8；
Step 8：Excision trouble unit is simultaneously alarmed.
3. DC distribution net busbar voltage control method according to claim 2, it is characterised in that：In step 6,
In the case where DC bus-bar voltage is more than the upper limit of the voltagerating scope, if having in the distributed power supply module
Then the energy-storage units enter charged state to energy-storage units, if in the distributed power supply module without energy-storage units if do not operate；
In the case where DC bus-bar voltage is less than the lower limit of the voltagerating scope, if if in the distributed power supply module
In have energy-storage units then the energy-storage units enter discharge condition, if in the distributed power supply module without energy-storage units if do not grasp
Make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710209189.9A CN106961099A (en) | 2017-03-31 | 2017-03-31 | A kind of DC distribution net busbar voltage control system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710209189.9A CN106961099A (en) | 2017-03-31 | 2017-03-31 | A kind of DC distribution net busbar voltage control system and its control method |
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| CN106961099A true CN106961099A (en) | 2017-07-18 |
Family
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| CN201710209189.9A Pending CN106961099A (en) | 2017-03-31 | 2017-03-31 | A kind of DC distribution net busbar voltage control system and its control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994663A (en) * | 2017-12-11 | 2018-05-04 | 蔚来汽车有限公司 | Method of the control for the DC bus-bar voltage of the charging power modules of electric automobile |
| CN108808839A (en) * | 2018-06-21 | 2018-11-13 | 常熟瑞特电气股份有限公司 | More power module control method for coordinating of high-frequency isolation warship DC power supply |
| CN108923448A (en) * | 2018-06-19 | 2018-11-30 | 东南大学 | A kind of Multi-end flexible direct current transmission control method for coordinating and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931653A (en) * | 2012-11-02 | 2013-02-13 | 浙江工业大学 | Comprehensive coordination control method of wind-solar direct current micro-grid |
| CN105610231A (en) * | 2014-11-11 | 2016-05-25 | 珠海兴业绿色建筑科技有限公司 | Implementation method of direct-current power system |
| CN106505551A (en) * | 2016-11-04 | 2017-03-15 | 国网江苏省电力公司扬州供电公司 | A kind of light storage DC power-supply system based on cooperative control device |
-
2017
- 2017-03-31 CN CN201710209189.9A patent/CN106961099A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931653A (en) * | 2012-11-02 | 2013-02-13 | 浙江工业大学 | Comprehensive coordination control method of wind-solar direct current micro-grid |
| CN105610231A (en) * | 2014-11-11 | 2016-05-25 | 珠海兴业绿色建筑科技有限公司 | Implementation method of direct-current power system |
| CN106505551A (en) * | 2016-11-04 | 2017-03-15 | 国网江苏省电力公司扬州供电公司 | A kind of light storage DC power-supply system based on cooperative control device |
Non-Patent Citations (1)
| Title |
|---|
| 盛万兴等: "面向能源互联网的灵活配电系统关键装备与组网形态研究", 《中国电机工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994663A (en) * | 2017-12-11 | 2018-05-04 | 蔚来汽车有限公司 | Method of the control for the DC bus-bar voltage of the charging power modules of electric automobile |
| CN108923448A (en) * | 2018-06-19 | 2018-11-30 | 东南大学 | A kind of Multi-end flexible direct current transmission control method for coordinating and system |
| CN108808839A (en) * | 2018-06-21 | 2018-11-13 | 常熟瑞特电气股份有限公司 | More power module control method for coordinating of high-frequency isolation warship DC power supply |
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Application publication date: 20170718 |