CN209516634U - The power supply unit of 66KV power distribution network series compensation device - Google Patents
The power supply unit of 66KV power distribution network series compensation device Download PDFInfo
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- CN209516634U CN209516634U CN201822034059.9U CN201822034059U CN209516634U CN 209516634 U CN209516634 U CN 209516634U CN 201822034059 U CN201822034059 U CN 201822034059U CN 209516634 U CN209516634 U CN 209516634U
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- 230000005611 electricity Effects 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 6
- 230000009466 transformation Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 239000013589 supplement Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- 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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model embodiment provides the power supply unit of 66KV power distribution network series compensation device.Energy is taken from the capacitance type potential transformer of connection high voltage bus side, by electric energy transformation and after carrying out rectifying and voltage-stabilizing, by rectifying and voltage-stabilizing side connection series compensation device power supply；Using battery as backup power source, when rectifying and voltage-stabilizing side connects series compensation device power supply, while it being connected to battery, charged to battery, it is ensured that the Stability and dependability that battery is powered as backup power source；When rectifying and voltage-stabilizing side power failure; backup power source is switched to power to series compensation device; when rectifying and voltage-stabilizing side service restoration; it switches back into rectifying and voltage-stabilizing side series compensation device is continued to power; it can guarantee and continue to power by backup power source when electric system, which is broken down, causes conventional electron to interrupt, operate normally the measurement and protection function of series compensation device.
Description
Technical field
The utility model belongs to high voltage power distribution technical field, in particular to a kind of 66KV power distribution network series compensation device power supply
Power supply unit.
Background technique
Power distribution network receives electric energy from power transmission network or regional power plant, is distributed by distribution facility or is divided step by step on the spot by voltage
Dispensing all types of user uses.As major network, 66kV power distribution network receives the electric energy of high voltage power supply offer, distributes electricity to low voltage electric network
Power directly powers to large user, the important function formed a connecting link is played in urban power distribution network.
Currently, 66kV power distribution network has that route is too long, load load-carrying is big, causes line end low voltage, very
To power grid supply voltage standard is had exceeded, power supply quality is difficult to be guaranteed.Series compensation device due to can shorten electrically away from
From, reduce line loss, improve power supply quality, thus be widely used in power distribution network.The power supply of series compensation device is current
There are the high pressure energy side-draw and low pressure energy two ways side-draw from capacitance type potential transformer.As depicted in figs. 1 and 2, respectively from
After taking energy in the high pressure lateral capacitance 11 and low pressure lateral capacitance 12 of the connected capacitor voltage transformer of high voltage bus 10, using transformation
Electric energy is transmitted to secondary side by device, then is carried out rectifying and voltage-stabilizing to the electric energy of secondary side and be followed by series compensation device power supply.Thus may be used
See, when powering in the prior art to 66kV series compensation device, no matter from high pressure is side-draw can all must be according to or low pressure is side-draw
The voltage for relying high voltage bus, when electric system is broken down, busbar voltage close to zero, capacitance partial pressure also close to zero, into
And lead to series compensation device power supply failure, so that its measurement and protection function all can be by strong influence.It would therefore be highly desirable to open
The technology of power supply can be continued to 66kV series compensation device by sending out a kind of when electric system is broken down.
Summary of the invention
To be solved in the utility model is that will lead to series compensation device when electric system is broken down in the prior art
The technical issues of power supply failure, the power supply unit of 66KV power distribution network series compensation device is provided, event can occur in electric system
Guarantee the normal power supply to series compensation device when barrier.
In order to solve the above technical problems, the embodiments of the present invention provide a kind of 66KV power distribution network series compensation device
Method of supplying power to, in the high-pressure side for the capacitance type potential transformer being connect with high voltage bus side or low pressure energy side-draw, by the electricity of acquirement
Can transformation and after carrying out rectifying and voltage-stabilizing, the series compensation device is connected by rectifying and voltage-stabilizing side and is powered；Backup power source is set, when described whole
It when flowing pressure stabilizing side power failure, switches to the backup power source and powers to the series compensation device, when the rectifying and voltage-stabilizing side powers
When recovery, switches back into the rectifying and voltage-stabilizing side and the series compensation device is continued to power, that is, can guarantee and break down in electric system
Cause conventional electron to continue to power by backup power source when interrupting, operates normally the measurement and protection function of series compensation device.
Preferably, using battery as backup power source, when the rectifying and voltage-stabilizing side connects series compensation device power supply, together
Battery described in Shi Liantong charges to the battery.
The utility model embodiment additionally provides one of the method for supplying power to based on aforementioned 66KV power distribution network series compensation device
The power supply unit of kind 66KV power distribution network series compensation device, including high pressure lateral capacitance, low pressure lateral capacitance, transformer, rectifying and voltage-stabilizing
Unit, battery and switching logic control unit, in which: the high pressure lateral capacitance and the low pressure lateral capacitance connect and connect institute
It states high voltage bus and takes electricity, the transformer primary side is connect with the high pressure lateral capacitance or low pressure lateral capacitance both ends takes energy,
The transformer secondary, which is surveyed, connects the rectification stable pressuring unit；The battery and the rectification stable pressuring unit are connected to described
Switching logic control unit side；The switching logic control unit other side connects the series compensation device, controls the rectification
Voltage regulation unit with the battery selects one and is connected to the series compensation device powers for it；Described in the switching logic control unit monitoring
The power supply of rectification stable pressuring unit side, when the rectification stable pressuring unit side power failure, the switching logic control unit is certainly
Battery described in dynamic switched conductive is series compensation device power supply；It is described to open when the rectification stable pressuring unit side service restoration
It closes logic control element and automatically switches to be connected the rectification stable pressuring unit as series compensation device power supply.
Preferably, the rectification stable pressuring unit output end passes through the charging control unit and the battery terminal phase
Even, the charging control unit is used to control the on-off for connecting circuit, and when circuit communication, the rectification stable pressuring unit was to the storage
Battery charging, to supplement accumulator electric-quantity.
It is further preferred that the charging control unit, which is arranged, monitors the battery charging progress, when the battery
Full of when, the charging control unit cuts off the circuit between the rectification stable pressuring unit and the battery, stops to described
Battery charging, prevents accumulator super-charge.
The above-mentioned technical proposal of the utility model embodiment has the beneficial effect that:
1. the power supply for avoiding series compensation device is influenced by route high voltage bus, even if electric system is broken down
When, it also can guarantee series compensation device normal power supply, it is ensured that corresponding measurement and protection function operates normally；
2. controlling while being powered by electric system high voltage bus side and carrying out electricity to the battery as backup power source
Amount supplement, it is ensured that the Stability and dependability of backup power source power supply.
Detailed description of the invention
Fig. 1 is the power supply schematic diagram of the series compensation device of low pressure energy side-draw in the prior art；
Fig. 2 is the power supply schematic diagram of the series compensation device of high pressure energy side-draw in the prior art；
Fig. 3 is the supplier of electricity of the 66KV power distribution network series compensation device of high pressure provided by the embodiment of the utility model energy side-draw
Method and principle of device schematic diagram.
[main element symbol description]
10- high voltage bus；11- high pressure lateral capacitance；12- low pressure lateral capacitance；21- transformer；22- rectification stable pressuring unit；31-
Battery；32- charging control unit；33- switching logic control unit.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
The utility model will lead to series compensation device power supply failure when electric system is broken down for the prior art
The problem of, provide the power supply unit of 66KV power distribution network series compensation device.
In order to realize that above-mentioned technical proposal, the embodiments of the present invention provide a kind of 66KV power distribution network series compensation dress
The method of supplying power to set, the specific scheme is that
In the high-pressure side for the capacitance type potential transformer being connect with high voltage bus side or low pressure energy side-draw, by the electric energy of acquirement
Transformation and after carrying out rectifying and voltage-stabilizing, by rectifying and voltage-stabilizing side connection series compensation device power supply；Backup power source is set, when rectifying and voltage-stabilizing side supplies
When electricity interrupts, switches to backup power source and power to series compensation device, when rectifying and voltage-stabilizing side service restoration, switch back into rectifying and voltage-stabilizing side
Series compensation device is continued to power, that is, can guarantee and continued when electric system, which is broken down, causes conventional electron to interrupt by backup power source
Power supply, operates normally the measurement and protection function of series compensation device.More preferably, whole using battery as backup power source
When flowing pressure stabilizing side connection series compensation device power supply, while it being connected to battery, charged to battery.
Fig. 3 is an example of the power supply unit based on aforementioned method of supplying power to, a kind of 66KV power distribution network string as shown in the figure
Join the power supply unit of compensation device, including high pressure lateral capacitance 11, low pressure lateral capacitance 12, transformer 21, rectification stable pressuring unit 22, storage
Battery 31 and switching logic control unit 33, in which: high pressure lateral capacitance 11 and low pressure lateral capacitance 12 connect and connect high voltage bus
10 take electricity, and 21 primary side of transformer is connect with high pressure lateral capacitance 11 takes energy, and 21 2 surveys of transformer connect rectification stable pressuring unit 22,
Fig. 3 only illustrate high pressure it is side-draw can the case where, as other embodiments, according to actual needs, transformer 21 can also connect
It connects 12 both ends of low pressure lateral capacitance and takes energy；Battery 31 and rectification stable pressuring unit 22 are connected to switching logic control unit 33 1
Side；33 other side of switching logic control unit connects series compensation device, and control rectification stable pressuring unit 22 is selected one with battery 31 and is connected to
Series compensation device is powered for it；Switching logic control unit 33 monitors the power supply of 22 side of rectification stable pressuring unit, works as rectification stable pressuring unit
When 22 side power failure, switching logic control unit 33 automatically switches conducting battery 31 as series compensation device power supply；Work as rectification
When 22 side service restoration of voltage regulation unit, it is that string mends dress that switching logic control unit 33, which automatically switches conducting rectification stable pressuring unit 22,
Set power supply；22 output end of rectification stable pressuring unit is connected by charging control unit 32 with 31 electrode of battery, charging control unit
32 for control the on-off of connection circuit, and rectification stable pressuring unit 22 is to the charging of battery 31 when circuit communication, to supplement battery
Electricity；
As more preferably embodiment, charging control unit 32 is set as the function with monitoring 31 charging progress of battery
Can, when battery 31 is full of, charging control unit 32 cuts off the circuit between rectification stable pressuring unit 22 and battery 31, stops
It charges to battery 31, prevents accumulator super-charge
The power supply unit course of work is as follows:
When Operation of Electric Systems is normal, export rectification stable pressuring unit 22 under the control of switching logic control unit 33
End is connected to series compensation device, i.e., is powered by rectifying and voltage-stabilizing side to series compensation device；Meanwhile charging control unit 32 is also controlled
System is connected to 22 output end of rectification stable pressuring unit with battery 31, is charged by rectifying and voltage-stabilizing side to battery 31；To avoid excessively
Charging, settable charging control unit 32 monitors the charging progress of battery 31, by charging control unit 32 after charging complete
Disconnect the connection of battery 31 and rectifying and voltage-stabilizing side；
Battery 31 is used as backup power source after charging, and falls 10 side voltage of high voltage bus when breaking down in electric system
When dropping down onto zero, for rectification stable pressuring unit 22 without direct voltage output, switching logic control unit 33 monitors such situation at this time, control
System disconnects the connection of rectification stable pressuring unit 22 and series compensation device, then switches to battery 31 and supply to series compensation device
Electricity, to guarantee the normal continuous power supply to series compensation device, it is ensured that the corresponding measurement and protection function of series compensation device is not by electricity
It operates normally；When switching logic control unit 33 monitors that power system recovery is normal, battery 31 and string can be actively disconnected
The connection for joining compensation device allows rectification stable pressuring unit 22 to be connected to series compensation device again and is powered, meanwhile, charge control list
Member 32 controls rectification stable pressuring unit 22 and is connected to 31 electrode of battery, is charged by rectifying and voltage-stabilizing side to battery 31, supplements
The electricity that battery 31 is lost during electric power system fault, it is ensured that as backup power source battery 31 power stability with
Reliability.
In above-mentioned technical proposal, specific element is according to specific needs in the common knowledge of those skilled in the art in device
Necessary adjustment is carried out in scope, for example the elements such as necessary switch or relay are added in view specific structure in the loop；Scheme
In the common sense such as other well known specific structure and characteristic do not describe excessively；Each embodiment is described in a progressive manner, each reality
Applying under the premise of technical characteristic involved in example does not constitute conflict between each other can be combined with each other, between each embodiment
Same and similar part may refer to each other.
In the description of the present invention, unless otherwise clearly defined and limited, term " connection ", " connected " should be done extensively
Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected, or be integrally connected；It can be directly connected,
The connection inside two elements can be can be indirectly connected through an intermediary.For those of ordinary skill in the art and
Speech, can understand the concrete meaning of above-mentioned term in the present invention with concrete condition.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement
It also should be regarded as falling into the protection scope of the utility model with retouching.
Claims (3)
1. a kind of power supply unit of 66KV power distribution network series compensation device, including high pressure lateral capacitance (11), low pressure lateral capacitance (12),
Transformer (21) and rectification stable pressuring unit (22), the high pressure lateral capacitance (11) and the low pressure lateral capacitance (12) are connected and are connected
High voltage bus (10) takes electricity, transformer (21) primary side and the high pressure lateral capacitance (11) or the low pressure lateral capacitance (12)
Both ends connection takes energy, and the secondary survey of transformer (21) connects the rectification stable pressuring unit (22), which is characterized in that further includes storing
Battery (31) and switching logic control unit (33), in which:
The battery (31) and the rectification stable pressuring unit (22) are connected to switching logic control unit (33) side；
Switching logic control unit (33) other side connects series compensation device, controls the rectification stable pressuring unit (22) and the electric power storage
It selects the connection series compensation device and powers for it in pond (31)；The switching logic control unit (33) monitors the rectifying and voltage-stabilizing list
First (22) side power supply, when the rectification stable pressuring unit (22) side power failure, the switching logic control unit (33)
Automatically switch to be connected the battery (31) as series compensation device power supply；When the rectification stable pressuring unit (22) side service restoration
When, the switching logic control unit (33) automatically switches to be connected the rectification stable pressuring unit (22) as series compensation device confession
Electricity.
2. power supply unit according to claim 1, which is characterized in that rectification stable pressuring unit (22) output end is by filling
Electric control unit (32) is connected with the battery (31) electrode, and the charging control unit (32) is used to control connection circuit
On-off, when circuit communication, the rectification stable pressuring unit (22) charged to the battery (31).
3. power supply unit according to claim 2, which is characterized in that be arranged described in the charging control unit (32) monitoring
Battery (31) charging progress, when the battery (31) are full of, charging control unit (32) the cutting rectification is steady
The circuit between unit (22) and the battery (31) is pressed, stops charging to the battery (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822034059.9U CN209516634U (en) | 2018-12-05 | 2018-12-05 | The power supply unit of 66KV power distribution network series compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822034059.9U CN209516634U (en) | 2018-12-05 | 2018-12-05 | The power supply unit of 66KV power distribution network series compensation device |
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| CN209516634U true CN209516634U (en) | 2019-10-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687475A (en) * | 2018-12-05 | 2019-04-26 | 国网内蒙古东部电力有限公司赤峰供电公司 | The method of supplying power to and power supply unit of 66KV power distribution network series compensation device |
| CN112288299A (en) * | 2020-11-04 | 2021-01-29 | 国网北京市电力公司 | Analysis method and system for distribution system reliability weak link |
-
2018
- 2018-12-05 CN CN201822034059.9U patent/CN209516634U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687475A (en) * | 2018-12-05 | 2019-04-26 | 国网内蒙古东部电力有限公司赤峰供电公司 | The method of supplying power to and power supply unit of 66KV power distribution network series compensation device |
| CN112288299A (en) * | 2020-11-04 | 2021-01-29 | 国网北京市电力公司 | Analysis method and system for distribution system reliability weak link |
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