CN109687475A - The method of supplying power to and power supply unit of 66KV power distribution network series compensation device - Google Patents
The method of supplying power to and power supply unit of 66KV power distribution network series compensation device Download PDFInfo
- Publication number
- CN109687475A CN109687475A CN201811483032.6A CN201811483032A CN109687475A CN 109687475 A CN109687475 A CN 109687475A CN 201811483032 A CN201811483032 A CN 201811483032A CN 109687475 A CN109687475 A CN 109687475A
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- compensation device
- battery
- series compensation
- power
- voltage
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000009466 transformation Effects 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1807—Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
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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
- 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
- H02J9/061—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 for DC powered loads
-
- 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
Abstract
The embodiment of the invention provides the method for supplying power to 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.The embodiment of the invention also provides the power supply units of the method for supplying power to based on aforementioned 66KV power distribution network series compensation device.
Description
Technical field
The invention belongs to high voltage power distribution technical field, in particular to a kind of supplier of electricity of 66KV power distribution network series compensation device
Method.The present invention also provides a kind of power supply units for powering to 66KV power distribution network series compensation device.
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
The present invention is to solve will lead to series compensation device power supply when electric system is broken down in the prior art
The technical issues of failure, the method for supplying power to and power supply unit of 66KV power distribution network series compensation device are provided, it can be in electric system
Guarantee the normal power supply to series compensation device when breaking down.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of power supply of 66KV power distribution network series compensation device
Method becomes the electric energy of acquirement in the high-pressure side for the capacitance type potential transformer connecting with high voltage bus side or low pressure energy side-draw
After pressing and 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 the rectification is steady
When pressing side power failure, switches to the backup power source and power to the series compensation device, when rectifying and voltage-stabilizing side service restoration
When, it switches back into the rectifying and voltage-stabilizing side and the series compensation device is continued to power, that is, can guarantee to break down in electric system causes
Conventional electron is continued to power when interrupting by backup power source, 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 embodiment of the invention also provides one kind of the method for supplying power to based on aforementioned 66KV power distribution network series compensation device
The power supply unit of 66KV power distribution network series compensation device, including high pressure lateral capacitance, low pressure lateral capacitance, transformer, rectifying and voltage-stabilizing list
Member, battery and switching logic control unit, in which: the high pressure lateral capacitance and the low pressure lateral capacitance are connected and connected described
High voltage bus takes electricity, and the transformer primary side is connect with the high pressure lateral capacitance or low pressure lateral capacitance both ends takes energy, institute
It states transformer secondary and surveys the connection rectification stable pressuring unit；The battery and the rectification stable pressuring unit are connected to described open
Close logic control element side；The switching logic control unit other side connects the series compensation device, and it is steady to control the rectification
It presses unit with the battery to select one and be connected to the series compensation device to power for it；The switching logic control unit monitoring is described whole
The power supply of voltage regulation unit side is flowed, when the rectification stable pressuring unit side power failure, the switching logic control unit is automatic
Battery described in switched conductive is series compensation device power supply；When the rectification stable pressuring unit side service restoration, the switch
Logic control element 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 embodiment of the present invention 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 be high pressure provided in an embodiment of the present invention it is side-draw can 66KV power distribution network series compensation device method of supplying power to 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
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention will lead to asking for series compensation device power supply failure when electric system is broken down for the prior art
Topic, provides the method for supplying power to and power supply unit of 66KV power distribution network series compensation device.
In order to realize above-mentioned technical proposal, the embodiment provides a kind of 66KV power distribution network series compensation devices
Method of supplying power to, 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 series compensation device that switching logic control unit 33, which automatically switches conducting rectification stable pressuring unit 22,
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 controlling the on-off of connection circuit, rectification stable pressuring unit 22 charges to battery 31 when circuit communication, to supplement battery electricity
Amount；
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, make 22 output end of rectification stable pressuring unit under the control of switching logic control unit 33
It is connected to, i.e., is powered to series compensation device by rectifying and voltage-stabilizing side with series compensation device；Meanwhile charging control unit 32 also controls
It 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 filling
Electricity, settable charging control unit 32 monitor the charging progress of battery 31, are broken after charging complete by charging control unit 32
Open the connection of battery 31 Yu rectifying and voltage-stabilizing side；
Battery 31 is used as backup power source after charging, and makes 10 side Voltage Drop of high voltage bus when breaking down in electric system
When to zero, for rectification stable pressuring unit 22 without direct voltage output, switching logic control unit 33 monitors such situation at this time, control
The connection of rectification stable pressuring unit 22 and series compensation device is disconnected, then switches to battery 31 and powers to series compensation device,
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 electric normal
Operation；When switching logic control unit 33 monitors that power system recovery is normal, it can actively disconnect battery 31 and series connection is mended
The connection of device is repaid, allows rectification stable pressuring unit 22 to be connected to series compensation device again and is powered, meanwhile, charging control unit 32
Control rectification stable pressuring unit 22 is connected to 31 electrode of battery, is charged by rectifying and voltage-stabilizing side to battery 31, and electric power storage is supplemented
The electricity that pond 31 is lost during electric power system fault, it is ensured that stability that the battery 31 as backup power source is powered and reliable
Property.
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 specifically defined or limited otherwise, term " connection ", " connected " should do broad sense reason
Solution, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be directly connected, it can also be with
Indirectly connected through an intermediary, it can be the connection inside two elements.For the ordinary skill in the art, may be used
The concrete meaning of above-mentioned term in the present invention is understood with concrete condition.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as falling into protection scope of the present invention.
Claims (5)
1. a kind of method of supplying power to of 66KV power distribution network series compensation device, in the capacitor voltage mutual inductance being connect with high voltage bus side
The high-pressure side of device or low pressure energy side-draw, by the electric energy transformation of acquirement and after carrying out rectifying and voltage-stabilizing, as described in the connection of rectifying and voltage-stabilizing side
Series compensation device power supply；It is characterized in that, setting backup power source switches to described standby when the rectifying and voltage-stabilizing side power failure
It is powered with power supply to the series compensation device, when the rectifying and voltage-stabilizing side service restoration, switches back into the rectifying and voltage-stabilizing side to institute
Series compensation device is stated to continue to power.
2. the method according to claim 1, wherein using battery as backup power source, the rectifying and voltage-stabilizing
When side connects series compensation device power supply, while it being connected to the battery, charged to the battery.
3. 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
The 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 also wraps
Include 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 the series compensation device, controls the rectification stable pressuring unit (22) and described
Battery (31) selects the connection series compensation device and powers for it；Switching logic control unit (33) the monitoring rectification is steady
Press the power supply of unit (22) side, 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 powers
When recovery, the switching logic control unit (33) automatically switches that the rectification stable pressuring unit (22) is connected to be the series compensation device
Power supply.
4. power supply unit according to claim 3, which is characterized in that rectification stable pressuring unit (22) output end passes through institute
It states charging control unit (32) to be connected with the battery (31) electrode, the charging control unit (32) is for controlling connection electricity
The on-off on road, when circuit communication, the rectification stable pressuring unit (22) charged to the battery (31).
5. power supply unit according to claim 4, 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 |
|---|---|---|---|
| CN201811483032.6A CN109687475A (en) | 2018-12-05 | 2018-12-05 | The method of supplying power to and power supply unit of 66KV power distribution network series compensation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811483032.6A CN109687475A (en) | 2018-12-05 | 2018-12-05 | The method of supplying power to and power supply unit of 66KV power distribution network series compensation device |
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| CN109687475A true CN109687475A (en) | 2019-04-26 |
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| CN201811483032.6A Pending CN109687475A (en) | 2018-12-05 | 2018-12-05 | The method of supplying power to and power supply unit of 66KV power distribution network series compensation device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202334336U (en) * | 2011-11-10 | 2012-07-11 | 程顺 | Active electronic type transformer power supply |
| CN103036455A (en) * | 2012-12-13 | 2013-04-10 | 威胜集团有限公司 | Three-phase online power-obtaining device for distribution networks |
| CN104184151A (en) * | 2014-07-18 | 2014-12-03 | 江苏大学 | Dynamic voltage restorer for realizing smooth switching of different operation modes of microgrid |
| CN209516634U (en) * | 2018-12-05 | 2019-10-18 | 国网内蒙古东部电力有限公司赤峰供电公司 | The power supply unit of 66KV power distribution network series compensation device |
-
2018
- 2018-12-05 CN CN201811483032.6A patent/CN109687475A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202334336U (en) * | 2011-11-10 | 2012-07-11 | 程顺 | Active electronic type transformer power supply |
| CN103036455A (en) * | 2012-12-13 | 2013-04-10 | 威胜集团有限公司 | Three-phase online power-obtaining device for distribution networks |
| CN104184151A (en) * | 2014-07-18 | 2014-12-03 | 江苏大学 | Dynamic voltage restorer for realizing smooth switching of different operation modes of microgrid |
| CN209516634U (en) * | 2018-12-05 | 2019-10-18 | 国网内蒙古东部电力有限公司赤峰供电公司 | The power supply unit of 66KV power distribution network series compensation device |
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