CN108599139A - Control method for electric installation and a kind of for electric installation - Google Patents
Control method for electric installation and a kind of for electric installation Download PDFInfo
- Publication number
- CN108599139A CN108599139A CN201810003917.5A CN201810003917A CN108599139A CN 108599139 A CN108599139 A CN 108599139A CN 201810003917 A CN201810003917 A CN 201810003917A CN 108599139 A CN108599139 A CN 108599139A
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- CN
- China
- Prior art keywords
- low
- pressure side
- side automatic
- controller
- automatic conversion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Abstract
The invention discloses a kind of control methods for electric installation.This includes voltage transformation unit and low-pressure side automatic conversion unit for electric installation;When needing to change the working condition of voltage transformation unit to control voltage transformation unit holding economical operation state, transformer economic operation controller sends corresponding economical operation control instruction to low-pressure side automatic conversion controller;Low-pressure side automatic conversion controller executes switch to low-pressure side according to the economical operation control instruction and controls, and economical operation state is kept to control the voltage transformation unit to change the working condition of the voltage transformation unit;In the case of remaining, low-pressure side automatic conversion controller executes switch to low-pressure side according to preset low-pressure side automatic power conversion logic and controls.The invention also discloses a kind of for electric installation.Compared with prior art, the present invention executes switch using one group of low-pressure side while realizing that transformer economic operation control and low-pressure side automatic power are converted, to reduce system cost.
Description
Technical field
The present invention relates to a kind of control methods for electric installation and a kind of for electric installation.
Background technology
In power supply system, to ensure the reliable power supply generally use duplex feeding power supply of system, and pass through automatic conversion
To automatically select, wherein power supply is load supplying to device for switching all the way.Many power supply systems in actual use pass through voltage transformation unit
High pressure is converted into low-tension supply, and designs the automatic conversion of two-way power supply in low-pressure system.It is such usually to be wrapped for electric installation
Include voltage transformation unit and low-pressure side automatic conversion unit;The voltage transformation unit is including one group of transformer and for controlling the transformation
Unit keeps the transformer economic operation controller of economical operation state;The low-pressure side automatic conversion unit include low-pressure side from
Turn changer controller and by low-pressure side automatic conversion controller control with realize low-pressure side automatic power conversion one group of low pressure
Side executes switch.Transformer in voltage transformation unit is electrical equipment critically important in system, and total capacity is considerably beyond generator
Total capacity, electric energy loss account for a big chunk of electric system network loss, therefore, the Land use systems economy of transformer whether direct shadow
Ring the size of electric energy loss.In the prior art, economic operation system of transformer includes more transformers, transformer economy fortune
Line control unit and one group execute switch(Usually breaker)Deng transformer economic operation controller can be according to transformer station high-voltage side bus shape
State control is arranged executes switch in low-pressure side, to realize the economical operation of transformer.The transformer economic operation is
Refer to transformer economic operation controller by monitoring to each transformer active power, reactive power and power factor etc., sentence
Disconnected, corresponding execute of control switchs input or the corresponding load of excision, to ensure that transformer is operated in optimized operation zone, realization
The economical operation of transformer.And equally includes one group in low-pressure side automatic conversion unit and turn for realizing low-pressure side automatic power
The low-pressure side changed executes switch.It includes that two-stage executes switch thus to cause low-pressure side, and system cost has been significantly greatly increased, has made
At the wasting of resources.
Invention content
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a kind of controlling parties for electric installation
Method executes switch using one group of low-pressure side while realizing that transformer economic operation control and low-pressure side automatic power are converted, to
Reduce cost.
The present invention specifically uses following technical scheme to solve above-mentioned technical problem:
A kind of control method for electric installation, described for electric installation includes voltage transformation unit and low-pressure side automatic conversion unit;It is described
Voltage transformation unit includes one group of transformer and keeps the transformer economy fortune of economical operation state for controlling the voltage transformation unit
Line control unit;The low-pressure side automatic conversion unit includes low-pressure side automatic conversion controller and by low-pressure side automatic conversion control
Device control processed is to realize that one group of low-pressure side of low-pressure side automatic power conversion executes switch;When needing to change the voltage transformation unit
When working condition keeps economical operation state to control the voltage transformation unit, transformer economic operation controller is automatic to low-pressure side
Switching controller sends corresponding economical operation control instruction;Low-pressure side automatic conversion controller is controlled according to the economical operation
Instruction executes switch to low-pressure side and controls, to change the working condition of the voltage transformation unit to control the voltage transformation unit
Keep economical operation state;In the case of remaining, low-pressure side automatic conversion controller is converted according to preset low-pressure side automatic power
Logic executes switch to low-pressure side and controls.
Following technical scheme can also be obtained according to identical invention thinking:
It is a kind of for electric installation, described for electric installation includes voltage transformation unit and low-pressure side automatic conversion unit;The voltage transformation unit packet
It includes one group of transformer and keeps the transformer economic operation controller of economical operation state for controlling the voltage transformation unit;Institute
State low-pressure side automatic conversion unit include low-pressure side automatic conversion controller and by low-pressure side automatic conversion controller control with
Realize that one group of low-pressure side of low-pressure side automatic power conversion executes switch;The transformer economic operation controller and low-pressure side are certainly
Turn changer controller signal connects;The transformer economic operation controller includes command output module, for needing to change
When the working condition of the voltage transformation unit keeps economical operation state to control the voltage transformation unit, to low-pressure side automatic conversion control
Device processed sends corresponding economical operation control instruction;The low-pressure side automatic conversion controller includes instruction execution module, is used for
Switch is executed according to the economical operation control instruction to low-pressure side to control, to change the working condition of the voltage transformation unit
Economical operation state is kept to control the voltage transformation unit;In the case of remaining, low-pressure side automatic conversion controller is according to default
Low-pressure side automatic power conversion logic to low-pressure side execute switch control.
Preferably, transformer economic operation controller is controlled to the economical operation transmitted by low-pressure side automatic conversion controller
Instruction has priority more higher than the control instruction generated according to low-pressure side automatic power conversion logic.
Preferably, transformer economic operation controller is controlled by fieldbus or interface circuit to low-pressure side automatic conversion
Device sends the economical operation control instruction.
It is further preferred that the interface circuit includes executing to switch one-to-one multiple signals access with low-pressure side,
It include the identical isolation circuit being made of resistance and optocoupler in per signal path all the way;The signal path be used for transmission through
Low-pressure side corresponding to the signal path for including in Ji operation control instruction executes the control information of switch.
Compared with prior art, technical solution of the present invention has the advantages that:
The present invention can utilize a set of power automatic transfer switch electric appliance to realize the transformer economic operation control in power supply system simultaneously
System and low-pressure side automatic power conversion, it is not necessary to again for transformer economic operation control be separately provided it is a set of executes switch, thus
System complexity is significantly reduced, cost of implementation is effectively reduced.
Description of the drawings
Fig. 1 is the structural schematic diagram of the power supply system in specific embodiment;
Fig. 2 is the structure diagram of low-pressure side automatic conversion one specific embodiment of controller;
Fig. 3 is a kind of specific implementation circuit diagram of interface circuit.
Specific implementation mode
The present invention includes voltage transformation unit and low-pressure side automatic conversion unit for electric installation;The voltage transformation unit includes one group of change
Depressor and the transformer economic operation controller that economical operation state is kept for controlling the voltage transformation unit;The low-pressure side
Automatic conversion unit includes low-pressure side automatic conversion controller and is controlled by low-pressure side automatic conversion controller to realize low pressure
One group of low-pressure side of side automatic power conversion executes switch.In order to execute switch using this group of low-pressure side while realizing transformation
Device economical operation control and the conversion of low-pressure side automatic power, the present invention use following control method:When needing to change the transformation
When the working condition of unit keeps economical operation state to control the voltage transformation unit, transformer economic operation controller is to low pressure
Side automatic conversion controller sends corresponding economical operation control instruction;Low-pressure side automatic conversion controller is according to the economic fortune
Row control instruction executes switch to low-pressure side and controls, to change the working condition of the voltage transformation unit to control the change
Unit is pressed to keep economical operation state;In the case of remaining, low-pressure side automatic conversion controller is according to preset low-pressure side automatic electric
Source conversion logic executes switch to low-pressure side and controls.
Preferably, transformer economic operation controller is controlled to the economical operation transmitted by low-pressure side automatic conversion controller
Instruction has priority more higher than the control instruction generated according to low-pressure side automatic power conversion logic.
Preferably, transformer economic operation controller is controlled by fieldbus or interface circuit to low-pressure side automatic conversion
Device sends the economical operation control instruction.
It is further preferred that the interface circuit includes executing to switch one-to-one multiple signals access with low-pressure side,
It include the identical isolation circuit being made of resistance and optocoupler in per signal path all the way;The signal path be used for transmission through
Low-pressure side corresponding to the signal path for including in Ji operation control instruction executes the control information of switch.
Wherein, transformer economic operation control logic used in transformer economic operation controller, low-pressure side is from turn
Existing various control logics can be used in low-pressure side automatic power conversion logic used in changer controller.
For the ease of public understanding, come to technical scheme of the present invention below by a specific embodiment and in conjunction with attached drawing
It is further elaborated:
Fig. 1 shows the basic structure of power supply system in the present embodiment.As shown in Figure 1, the power supply system includes high voltage power supply system
System, voltage transformation unit, low-pressure side automatic conversion unit and load.High voltage power supply is by transformer economical running control system
Low-pressure side automated conversion system and load provide low-tension supply.Its high voltage power supply includes high pressure main power supply 10kV, high pressure
Available power supply 10kV, high-pressure side is additionally provided with by main for breaker GS1, available breaker GS2 and high-pressure side automatic conversion control
Device processed(It is not shown in figure)The high side power automated conversion system of composition.Voltage transformation unit includes transformer 1, transformer 2 and becomes
Depressor economic operation controller(It is not shown in figure), it is common that high pressure main power supply 10kV by transformer T1 is reduced to 0.4kV low pressure
Power supply, high voltage standby power supply source 10kV are reduced to 0.4kV Low-voltage Backup Powers by transformer T2.Low-pressure side automatic conversion unit includes
Common breaker DS1, back-up breaker DS2 and busbar breaker DTIE and low-pressure side automatic conversion controller(Do not show in figure
Go out).The main end of incoming cables for breaker GS1 in the high-pressure side is connect with main power supply 10kV, leading-out terminal and the one of transformer T1
End connection, the other end of transformer T1 are often connect with the end of incoming cables of breaker DS1 with low-pressure side, commonly use the outlet of breaker DS1
End is connect with load 1;The end of incoming cables of the high-pressure side available breaker GS2 is connect with available power supply 10kV, leading-out terminal and change
Depressor T2 connections, transformer T2 are connect with the end of incoming cables of low-pressure side back-up breaker DS2, the leading-out terminal of back-up breaker DS2 with
2 connection of load, busbar breaker DTIE are connected to the leading-out terminal of common breaker DS1 and back-up breaker DS2.When the main confession of high pressure
In the case of power supply 10kV, high voltage standby power supply source 10kV are normal, automatic conversion controller control in high-pressure side is main for breaker
GS1, available breaker GS2 close a floodgate, meanwhile, breaker DS1, back-up breaker are commonly used in the control of low-pressure side automatic conversion controller
DS2 combined floodgates, busbar breaker DTIE separating brakes, normal, stand-by power supply give load 1 and load 2 to power respectively.
Fig. 2 shows the basic structure of the present embodiment mesolow side automatic conversion controller.As shown in Fig. 2, the low-pressure side
Automatic conversion controller includes:First power supply sample circuit, second source sample circuit, microprocessor unit, man-machine interface, position
Set signal deteching circuit, drive control circuit and interface circuit;First, second power supply sample circuit respectively with microprocessor unit
Connection, for by the high voltage signal of the first, second power supply connected to it be converted to microprocessor unit can receive it is low
Voltage signal, and give to microprocessor unit, microprocessor unit calculates the state for judging two-way power supply in real time;Position signal is examined
Slowdown monitoring circuit executes switch by each(I.e. common breaker DS1, back-up breaker DS2, busbar breaker DTIE)Conjunction/sub-signal turn
It is changed to the low voltage signal that microprocessor can receive, and is sent to microprocessor unit;Microprocessor unit is obtained according to calculating
Two-way power supply state and each state for executing switch send out control signal to drive control circuit and corresponding execute driven to open
Pass acts, and realizes the conversion of low-pressure side automatic power;What the interface circuit was sent out for receiving transformer economic operation controller
Economical operation control instruction, for microprocessor unit according to the economical operation control instruction for receiving interface circuit, control is corresponding
Switch motion is executed, realizes the economical operation of transformer.In the present embodiment, transformer economic operation controller to low-pressure side from
Economical operation control instruction transmitted by turn changer controller has than being generated according to low-pressure side automatic power conversion logic
The higher priority of control instruction.
Interface circuit in the present embodiment is as shown in figure 3, there are three tunnels to be similarly isolated with what optocoupler formed by resistance for it
Circuit is respectively used to the three tunnels control signal that receiving transformer economic operation controller is sent out;As shown in figure 3, KS1, KS2 and
Three switches that KTIE is controlled by transformer economic operation controller(It is preferred that using passive contact), KS1, KS2 and KTIE points
Low pressure is not corresponded to executes switch DS1, DS2, DTIE, when KS1, KS2 or KTIE are closed, low-pressure side automatic transfer switch controller
It controls corresponding low-pressure side and executes switch motion;When KS1, KS2 and KTIE are cut-off signal, the control of low-pressure side automatic conversion
Device executes automatic conversion control logic;When KS1, KS2 and KTIE are closed, low-pressure side automatic conversion controller detect often,
When stand-by power supply meets the parallel running condition of setting, control executes switch DS1, DS2, DTIE and closes a floodgate, and otherwise, low-pressure side is automatic
Switching controller tripping is simultaneously alarmed.
Low pressure often, stand-by power supply it is normal, load 1 and load 2 equal full load conditions under, low-pressure side automatic conversion controller
Interface circuit do not receive the economical operation control instruction of transformer economic operation controller, i.e. KS1, KS2, KTIE is disconnected
In the case of, automatic conversion controller executes automatic conversion control logic, controls and common execute switch DS1, spare executes switch
DS2 closes a floodgate, mother executes switch DTIE separating brakes, and load 1 and load 2 are powered by transformer 1 and transformer 2 respectively.
When transformer economic operation controller detects that control KS2 is disconnected, KS1 and KTIE are closed at light load for load 2, accordingly
Economical operation control instruction be transmitted to low-pressure side automatic conversion controller, low-pressure side automatic conversion controller is according to receiving
Economical operation control instruction controls mother and executes switch DTIE combined floodgates, spare execution switch DS2 separating brakes, at this point, load 1 and load
2 are powered by transformer T1, to realize the economical operation of transformer.In the case of 1 underloading of load, control principle is identical,
Details are not described herein, and finally, load 1 and load 2 are powered by transformer T2.
Claims (10)
1. a kind of control method for electric installation, described for electric installation includes voltage transformation unit and low-pressure side automatic conversion unit;Institute
State the transformer economy that voltage transformation unit includes one group of transformer and keeps economical operation state for controlling the voltage transformation unit
Run controller;The low-pressure side automatic conversion unit includes low-pressure side automatic conversion controller and by low-pressure side automatic conversion
Controller control is to realize that one group of low-pressure side of low-pressure side automatic power conversion executes switch;It is characterized in that, when needing to change
When the working condition of the voltage transformation unit keeps economical operation state to control the voltage transformation unit, transformer economic operation control
Device sends corresponding economical operation control instruction to low-pressure side automatic conversion controller;Low-pressure side automatic conversion controller is according to institute
It states economical operation control instruction to control low-pressure side execution switch, to change the working condition of the voltage transformation unit to control
It makes the voltage transformation unit and keeps economical operation state;In the case of remaining, low-pressure side automatic conversion controller is according to preset low pressure
Side automatic power conversion logic executes switch to low-pressure side and controls.
2. method as described in claim 1, which is characterized in that transformer economic operation controller is controlled to low-pressure side automatic conversion
Economical operation control instruction transmitted by device has than the control instruction that is generated according to low-pressure side automatic power conversion logic more
High priority.
3. method as described in claim 1, which is characterized in that transformer economic operation controller is by fieldbus to low-pressure side
Automatic conversion controller sends the economical operation control instruction.
4. method as described in claim 1, which is characterized in that transformer economic operation controller is by interface circuit to low-pressure side
Automatic conversion controller sends the economical operation control instruction.
5. method as claimed in claim 4, which is characterized in that the interface circuit includes executing switch with low-pressure side to correspond
Multiple signals access, per signal path all the way in include the identical isolation circuit being made of resistance and optocoupler;The letter
Number access is used for transmission the control letter that low-pressure side corresponding to the signal path in economical operation control instruction included executes switch
Breath.
6. a kind of for electric installation, described for electric installation includes voltage transformation unit and low-pressure side automatic conversion unit;The voltage transformation unit
The transformer economic operation controller of economical operation state is kept including one group of transformer and for controlling the voltage transformation unit;
The low-pressure side automatic conversion unit includes low-pressure side automatic conversion controller and is controlled by low-pressure side automatic conversion controller
To realize that one group of low-pressure side of low-pressure side automatic power conversion executes switch;It is characterized in that, the transformer economic operation control
Device processed is connect with low-pressure side automatic conversion controller signals;The transformer economic operation controller includes command output module,
When keeping economical operation state for controlling the voltage transformation unit needing to change the working condition of the voltage transformation unit, to low
Side automatic conversion controller is pressed to send corresponding economical operation control instruction;The low-pressure side automatic conversion controller includes instruction
Execution module is controlled for executing switch to low-pressure side according to the economical operation control instruction, to change the transformation
The working condition of unit keeps economical operation state to control the voltage transformation unit;In the case of remaining, low-pressure side automatic conversion
Controller executes switch to low-pressure side according to preset low-pressure side automatic power conversion logic and controls.
7. device as claimed in claim 6, which is characterized in that transformer economic operation controller is controlled to low-pressure side automatic conversion
Economical operation control instruction transmitted by device has than the control instruction that is generated according to low-pressure side automatic power conversion logic more
High priority.
8. device as claimed in claim 6, which is characterized in that transformer economic operation controller is by fieldbus to low-pressure side
Automatic conversion controller sends the economical operation control instruction.
9. device as claimed in claim 6, which is characterized in that transformer economic operation controller is by interface circuit to low-pressure side
Automatic conversion controller sends the economical operation control instruction.
10. device as claimed in claim 9, which is characterized in that the interface circuit includes executing one a pair of switch with low-pressure side
The multiple signals access answered includes all the way often the identical isolation circuit being made of resistance and optocoupler in signal path;It is described
Signal path is used for transmission the control that low-pressure side corresponding to the signal path in economical operation control instruction included executes switch
Information.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810003917.5A CN108599139A (en) | 2018-01-03 | 2018-01-03 | Control method for electric installation and a kind of for electric installation |
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CN201810003917.5A CN108599139A (en) | 2018-01-03 | 2018-01-03 | Control method for electric installation and a kind of for electric installation |
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CN201810003917.5A Pending CN108599139A (en) | 2018-01-03 | 2018-01-03 | Control method for electric installation and a kind of for electric installation |
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Citations (8)
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CN201294482Y (en) * | 2008-11-03 | 2009-08-19 | 重庆市电力公司城区供电局 | Economic operation intelligent control device for distribution transformer |
CN201805239U (en) * | 2010-09-30 | 2011-04-20 | 山东计保电气有限公司 | Device of intelligent switching transformer bank |
CN102904338A (en) * | 2012-08-16 | 2013-01-30 | 北海市深蓝科技发展有限责任公司 | Economical operation control method of transformer |
US20130076130A1 (en) * | 2011-09-28 | 2013-03-28 | Huaguang Zhang | Transformer control device and method based on three-dimensional zone diagram policy |
CN103280839A (en) * | 2013-05-30 | 2013-09-04 | 山东计保电气有限公司 | Different-capacitance transformer paralleling alternate operation electricity-saving method and device |
CN203218895U (en) * | 2013-04-23 | 2013-09-25 | 郑州金源特变电气有限公司 | Intelligent control device for capacity-variable energy-saving preassembled transformer substation |
CN104037936A (en) * | 2014-07-10 | 2014-09-10 | 凯里供电局 | Economical operation control method for distribution transformers with spare power automatic switching function |
CN204012719U (en) * | 2014-08-21 | 2014-12-10 | 国家电网公司 | A kind of two main transformer intelligent operation/cutting measure and control device |
-
2018
- 2018-01-03 CN CN201810003917.5A patent/CN108599139A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201294482Y (en) * | 2008-11-03 | 2009-08-19 | 重庆市电力公司城区供电局 | Economic operation intelligent control device for distribution transformer |
CN201805239U (en) * | 2010-09-30 | 2011-04-20 | 山东计保电气有限公司 | Device of intelligent switching transformer bank |
US20130076130A1 (en) * | 2011-09-28 | 2013-03-28 | Huaguang Zhang | Transformer control device and method based on three-dimensional zone diagram policy |
CN102904338A (en) * | 2012-08-16 | 2013-01-30 | 北海市深蓝科技发展有限责任公司 | Economical operation control method of transformer |
CN203218895U (en) * | 2013-04-23 | 2013-09-25 | 郑州金源特变电气有限公司 | Intelligent control device for capacity-variable energy-saving preassembled transformer substation |
CN103280839A (en) * | 2013-05-30 | 2013-09-04 | 山东计保电气有限公司 | Different-capacitance transformer paralleling alternate operation electricity-saving method and device |
CN104037936A (en) * | 2014-07-10 | 2014-09-10 | 凯里供电局 | Economical operation control method for distribution transformers with spare power automatic switching function |
CN204012719U (en) * | 2014-08-21 | 2014-12-10 | 国家电网公司 | A kind of two main transformer intelligent operation/cutting measure and control device |
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Application publication date: 20180928 |