CN102347621A - Method for controlling operation of automatic switching type transformer - Google Patents
Method for controlling operation of automatic switching type transformer Download PDFInfo
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- CN102347621A CN102347621A CN2011102398772A CN201110239877A CN102347621A CN 102347621 A CN102347621 A CN 102347621A CN 2011102398772 A CN2011102398772 A CN 2011102398772A CN 201110239877 A CN201110239877 A CN 201110239877A CN 102347621 A CN102347621 A CN 102347621A
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- circuit breaker
- transformer
- automatic switching
- electric power
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Abstract
The invention belongs to the technical field of transformer protection in an electric power transport system, and relates to a back-up protection and control technology of an automatic switching type transformer, in particular to a method for controlling operation of the automatic switching type transformer, which comprises the following steps of: first, selecting an existing electric power transport system comprising hardware and software, adding a device provided with the automatic switching type transformer and functions, and connecting four groups of circuit breaker into the electric power transport system according to principles of electricity; and then connecting two transformers in the electric power transport system into the electric power transport system according to the principles of electricity, sampling a voltage value and a current value of each transformer, judging whether switching is carried out or not, respectively controlling the operation of each circuit breaker according to software control logic relation, and controlling the switching of the transformers. The method provided by the invention has simple control principles, and is safe and reliable, the automatic switching performance is good, the manpower and material resources are saved, the energy consumption is reduced, and the service life of the transformer is prolonged.
Description
Technical field:
The invention belongs to the tranformer protection technical field in the electric power transport system, relate to a kind of transformer backup protection control technology of automatic switching, particularly a kind of automatic switching formula transformer progress control method.
Background technology:
At present, the transformer backup protection measure and control device and the technical method that have generally used, the major function of its protection has: three sections specified times press off lock (direction) overcurrent protection again; Three sections (direction) zero-sequence current protections; Gap zero-sequenceprotection; Zero-sequence voltage protection; Overload protection (on-load voltage regulation, ventilating starts); Composite voltage; The PT break alarm; The liquid crystal display function that has all can be accomplished normal information and operation through keyboard and liquid crystal display; Can realize distant place communication through field-bus interface and automation control system; Directly drive the circuit breaker tripping coil through an outer pulse, realize breaker tripping and closing operation circuit breaker; Has anti-jump loop; But control circuit breaker deciliter function and on-line tuning outlet matrix or the like.The observing and controlling function that prior art had has: 12 tunnel remote signalling are opened into collection, device remote signalling displacement, accident remote signalling; Normal breaker remote branch, closing operation; Analog quantitys such as telemetry-acquisition amount and calculating: P, Q, I (IA, IC, I2, Ia, Ib, Ic, I0, I0s), U (UA, UB, UC, UAB, UBC, UCA, U1, U2), U0, F, COS Ф; Incident SOE record or the like.Yet present transformer backup protection observation and control technology can not be carried out the automatic switching of transformer based on the principle of transformer economic operation.The dual transformer powering mode is generally adopted in power supply in the existing power system, when normally moving, and two transformer difference powering loads; The low voltage liaison net switch is set between the two-way load; When a transformer broke down, the low voltage liaison net switch closed a floodgate, and gave all electric by the transformer of normal operation; For guaranteeing power supply reliability, every transformer capacity is all pressed the total load amount and is calculated.Follow season and the time has than great fluctuation process with electric loading in the actual motion, the intraday morning, noon and afternoon, three time period power loads were bigger, and all the other time transformers of more than ten hours are in the light running state mostly, have lost a large amount of electric energy.But become pursuing one's goal of scientific research in the industry so seek to design a kind of automatic switching formula tranformer protection and control method with the transformer economic operation function.
Summary of the invention:
The objective of the invention is to overcome the shortcoming that prior art exists; Seek to design a kind of automatic switching formula transformer progress control method of transformer economic operation defencive function; Make the electric power transport system can based on the load variation; According to the theory of transformer economic operation,, thereby make transformer run on the economical operation state automatically through the automatic switching of deciliter realization transformer of control respective circuit breakers; Reach and save energy consumption and prolong the transformer effect in useful life, realize protection and control transformer.
To achieve these goals, the present invention selects the existing electric power transport system that comprises that hardware and software is formed earlier, increases the device and the function that are provided with the automatic switching transformer, makes in the electric power transport system and inserts four groups of circuit breakers by electrical principles; Two transformers in the electric power transport system are inserted in the electric power transport system by electrical principles, and its step that realizes automatic switching formula transformer operation control is:
1. connect the circuit of electric power transport system, make two transformers be in the powered operation state;
2. respectively the voltage and current value in the transformer lines is sampled;
3. according to the voltage and current value of institute's sampled value, judge whether automatic switching,, then return step and 2. sample again as not needing automatic switching by critical point value requirement; Automatic switching is then thrown the 3rd circuit breaker and Returning switch state if desired;
4. judge whether the 3rd circuit breaker puts into operation, if do not put into operation, then reports to the police,, then cut off second circuit breaker if the 3rd circuit breaker puts into operation;
5. judge whether second circuit breaker excises,, then report to the police, simultaneously, cut off the 3rd circuit breaker and Returning switch state, judge then whether the 3rd circuit breaker excises, if do not have excision then warning if do not have excision; If second circuit breaker excises, then excise first circuit breaker again;
6. judge whether first circuit breaker excises,, then prepare the transformer excision if excise; The excision if first circuit breaker is failed is then reported to the police, and simultaneously, close second circuit breaker and Returning switch state are if second circuit breaker is failed to close a floodgate then reported to the police; If second circuit breaker closes and the Returning switch state, then cut off the 3rd circuit breaker and Returning switch state, judge simultaneously whether the 3rd circuit breaker excises, then do not report to the police as having excision.
The CPU of implement device of the present invention adopts 32 bit DSP digital signal processor TMSF2811; As the core component of accomplishing protection and control device; Cpu motherboard and other card interrelate; Accomplish the function of AD conversion, switch acquisition, switching value output, man-machine interface control, EEPROM access, clock access, Communication Control and inhibition magnetizing inrush current; Cpu motherboard adopts four layers of printed panel and surface packaging technique, and outward appearance is small and exquisite, the reliability and the antijamming capability of compact conformation, raising protection system; Open entering plate and comprise the switching value input processing circuit; The switching value input processing circuit is accomplished the preliminary treatment that 12 way switch amounts are gathered, and opens into amount to comprise: the not energy storage of the position of the switch, spring, control loop broken string, remote operation locking, locking reclosing and subsequent use open into; SAMPLE sampling plate plug-in unit comprises instrument transformer plate and signal regulating panel; The main sensing of accomplishing the alternating voltage and the electric current of protected circuit; Conditioning and processing and amplifying; Convert the AC signal of the instrument transformer in the electric power transport system to meet AD modular converter input range (0-3V) voltage signal, finally accomplish digital-to-analogue conversion by the AD modular converter; Power panel comprises power circuit, and power circuit can provide low-voltage dc power supply for the electric power transport system: switching value input and output usefulness+24V power supply, CPU and display panel used+5V power supply; Communication module is integrated in the DSP control board, realizes between each device and the parts, and data communication between system and the controlling platform, be convenient to the operation and the management of whole electric power transport system; When using existing transformer backup protection measure and control device, in the electric power transport system, add automatic switching device based on transformer economic operation, realize automatic switching formula transformer running protection and control effect in the electric power transport system.
The present invention compared with prior art can realize the automatic switching of transformer based in load effectively, makes the transformer in the electric power transport system be in the economical operation state, reduces the operating cost of electric power transport system, uses manpower and material resources sparingly; The application of sluggish principle has strengthened the success rate and the reliability of protection with control of transformer automatic switching; Its control principle is simple, and is safe and reliable, and the automatic switching better function uses manpower and material resources sparingly, and cuts down the consumption of energy, and prolongs transformer useful life.
Description of drawings:
Fig. 1 is a workflow schematic block diagram of the present invention.
Fig. 2 is a transformer of the present invention operation control circuit syndeton principle schematic, comprising first transformer 1, second transformer 2, first circuit breaker 3, second circuit breaker 4, the 3rd circuit breaker 5 and the 4th circuit breaker 6.
Embodiment:
Below through embodiment and combine accompanying drawing to further specify.
Embodiment:
Present embodiment chooses the existing power transport system earlier; The control system that promptly comprises hardware and software; And increase device and the function that is provided with the automatic switching transformer, in the electric power transport system, insert four groups of circuit breakers, i.e. first, second and third and four circuit breakers 3,4,5 and 6 by electrical principles; Make two transformers in the electric power transport system by in the electrical principles connecting system and be in the operation state of treating then, concrete access way is shown in accompanying drawing 2, and its step that realizes the control of automatic switching formula tranformer protection is:
1. connect the circuit of electric power transport system, make two transformers drop into powered operation;
2. respectively the voltage and current value in the transformer circuit is sampled;
3. according to the voltage and current value of institute's sampled value, judge whether automatic switching,, then return step 2., sample again as not needing automatic switching by critical point value requirement; Automatic switching is then thrown the 3rd circuit breaker 5 and Returning switch state if desired;
4. judge whether the 3rd circuit breaker 5 puts into operation, if do not put into operation, then reports to the police, if the 3rd circuit breaker 5 has put into operation, then cuts off second circuit breaker 4;
5. judge whether second circuit breaker 4 excises,, simultaneously, cut off the 3rd circuit breaker 5 and Returning switch state, judge then whether the 3rd circuit breaker 5 excises, if do not have excision then warning if no excision is then reported to the police; If second circuit breaker 4 has excised, then excise first circuit breaker 3 again;
6. judge whether first circuit breaker 3 excises,, then prepare the transformer excision if excise; The excision if first circuit breaker 3 is failed is then reported to the police, and simultaneously, second circuit breaker 4 and the Returning switch state that close is if second circuit breaker 4 is failed to close a floodgate then reported to the police; If second circuit breaker 4 closes and the Returning switch state, then cut off the 3rd circuit breaker 5 and Returning switch state, judge simultaneously whether the 3rd circuit breaker 5 excises, then do not report to the police as having excision.
The CPU of the implement device of present embodiment adopts 32 bit DSP digital signal processor TMSF2811; As the core component of accomplishing protection and control device; Cpu motherboard and other card interrelate; Accomplish the function of AD conversion, switch acquisition, switching value output, man-machine interface control, EEPROM access, clock access, Communication Control and inhibition magnetizing inrush current; Cpu motherboard adopts four layers of printed panel and surface packaging technique, and outward appearance is small and exquisite, the reliability and the antijamming capability of compact conformation, raising protection system; Open entering plate and comprise the switching value input processing circuit; The switching value input processing circuit is accomplished the preliminary treatment that 12 way switch amounts are gathered, and opens into amount to comprise: the not energy storage of the position of the switch, spring, control loop broken string, remote operation locking, locking reclosing and subsequent use open into; SAMPLE sampling plate plug-in unit comprises instrument transformer plate and signal regulating panel; The main sensing of accomplishing the alternating voltage and the electric current of protected circuit; Conditioning and processing and amplifying; Convert the AC signal of the instrument transformer in the electric power transport system to meet AD modular converter input range (0-3V) voltage signal, finally accomplish digital-to-analogue conversion by the AD modular converter; Power panel comprises power circuit, and power circuit can provide low-voltage dc power supply for the electric power transport system: switching value input and output usefulness+24V power supply, CPU and display panel used+5V power supply; Communication module is integrated in the DSP control board, realizes between each device and the parts, and data communication between system and the controlling platform, be convenient to the operation and the management of whole electric power transport system; When using existing transformer backup protection measure and control device, in the electric power transport system, add automatic switching device based on transformer economic operation, realize automatic switching formula transformer running protection and control effect in the electric power transport system.
Claims (1)
1. an automatic switching formula transformer progress control method is selected the existing electric power transport system that comprises that hardware and software is formed earlier, increases the device and the function that are provided with the automatic switching transformer, makes in the electric power transport system and inserts four groups of circuit breakers by electrical principles; Two transformers in the electric power transport system are inserted in the electric power transport system by electrical principles, it is characterized in that the step that realizes automatic switching formula transformer operation control is:
1. connect the circuit of electric power transport system, make two transformers be in the powered operation state;
2. respectively the voltage and current value in the transformer lines is sampled;
3. according to the voltage and current value of institute's sampled value, judge whether automatic switching,, then return step and 2. sample again as not needing automatic switching by critical point value requirement; Automatic switching is then thrown the 3rd circuit breaker and Returning switch state if desired;
4. judge whether the 3rd circuit breaker puts into operation, if do not put into operation, then reports to the police,, then cut off second circuit breaker if the 3rd circuit breaker puts into operation;
5. judge whether second circuit breaker excises,, then report to the police, simultaneously, cut off the 3rd circuit breaker and Returning switch state, judge then whether the 3rd circuit breaker excises, if do not have excision then warning if do not have excision; If second circuit breaker excises, then excise first circuit breaker again;
6. judge whether first circuit breaker excises,, then prepare the transformer excision if excise; The excision if first circuit breaker is failed is then reported to the police, and simultaneously, close second circuit breaker and Returning switch state are if second circuit breaker is failed to close a floodgate then reported to the police; If second circuit breaker closes and the Returning switch state, then cut off the 3rd circuit breaker and Returning switch state, judge simultaneously whether the 3rd circuit breaker excises, then do not report to the police as having excision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102398772A CN102347621A (en) | 2011-08-19 | 2011-08-19 | Method for controlling operation of automatic switching type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102398772A CN102347621A (en) | 2011-08-19 | 2011-08-19 | Method for controlling operation of automatic switching type transformer |
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| CN102347621A true CN102347621A (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102398772A Pending CN102347621A (en) | 2011-08-19 | 2011-08-19 | Method for controlling operation of automatic switching type transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723697A (en) * | 2012-06-20 | 2012-10-10 | 湖州电力局 | Method for implementing intelligent tripping for back-up protection of transformer |
| CN108832712A (en) * | 2018-07-09 | 2018-11-16 | 天津市三源电力设备制造有限公司 | Low-voltage distribution system and its economical operation control method based on clear energy sources |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445906A (en) * | 2003-04-25 | 2003-10-01 | 江苏省电力公司镇江供电公司 | Method for automatic putting new type backup power source into use under PC control |
| CN1988322A (en) * | 2006-11-24 | 2007-06-27 | 北海银河高科技产业股份有限公司 | Device for automatic put-in spair power source |
| CN101425687A (en) * | 2008-07-03 | 2009-05-06 | 重庆大学 | Automatic control method for transformer economic operation and standby automatic throwing integrated apparatus |
| CN101752897A (en) * | 2008-12-15 | 2010-06-23 | 河南省电力公司南阳供电公司 | Automatic comprehensive spare switch device based on automatic dispatching platform |
-
2011
- 2011-08-19 CN CN2011102398772A patent/CN102347621A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445906A (en) * | 2003-04-25 | 2003-10-01 | 江苏省电力公司镇江供电公司 | Method for automatic putting new type backup power source into use under PC control |
| CN1988322A (en) * | 2006-11-24 | 2007-06-27 | 北海银河高科技产业股份有限公司 | Device for automatic put-in spair power source |
| CN101425687A (en) * | 2008-07-03 | 2009-05-06 | 重庆大学 | Automatic control method for transformer economic operation and standby automatic throwing integrated apparatus |
| CN101752897A (en) * | 2008-12-15 | 2010-06-23 | 河南省电力公司南阳供电公司 | Automatic comprehensive spare switch device based on automatic dispatching platform |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723697A (en) * | 2012-06-20 | 2012-10-10 | 湖州电力局 | Method for implementing intelligent tripping for back-up protection of transformer |
| CN102723697B (en) * | 2012-06-20 | 2014-10-29 | 湖州电力局 | Method for implementing intelligent tripping for back-up protection of transformer |
| CN108832712A (en) * | 2018-07-09 | 2018-11-16 | 天津市三源电力设备制造有限公司 | Low-voltage distribution system and its economical operation control method based on clear energy sources |
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Application publication date: 20120208 |
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