CN101950957A - Method for operating distributed compensation of arc suppression coil - Google Patents
Method for operating distributed compensation of arc suppression coil Download PDFInfo
- Publication number
- CN101950957A CN101950957A CN2010102938600A CN201010293860A CN101950957A CN 101950957 A CN101950957 A CN 101950957A CN 2010102938600 A CN2010102938600 A CN 2010102938600A CN 201010293860 A CN201010293860 A CN 201010293860A CN 101950957 A CN101950957 A CN 101950957A
- Authority
- CN
- China
- Prior art keywords
- compensation
- arc
- equipments
- complete set
- extinguishing
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a method for operating distributed compensation of an arc suppression coil. According to the operation method, a plurality of fixed compensation arc suppression complete plants are distributed and arranged at corresponding compensation nodal points in an electric distribution network system and are operated at set compensation tap positions; constant compensating current is provided to the electric distribution network system from the compensation nodal points; automatic tuning arc suppression complete plants calculate vacancy of system capacitance current and compensating current of fixed compensation arc suppression complete plants according to the line switching status of the electric distribution network system and realize automatic tracking compensation. The method of the invention can well solve the problem that the system capacitance current is far larger than compensation capacity of an automatic tuning arc suppression device, realize automatic tuning and compensation of a large capacitance current system and the method is more flexible and economical. When the system breaks up into a plurality of parts in the case of failure, the subsystem can still carry out compensation within a certain range and maintain balance between the system capacitance current and compensating current.
Description
Technical field
The present invention relates to a kind of high-voltage electrical apparatus technology, be specifically related to a kind of operational mode that is used for power network neutral point small current neutral grounding compensation the complete sets of equipment.
Background technology
Along with the continuous expansion of system for distribution network of power scale and the extensive employing of cable line, the distribution network system capacitance current constantly increases, the situation that system capacitive current far surpasses the automatic tuning arc depression coil offset current has appearred, thus, adopt many arc suppression coils that the idea that system capacitive current compensates is arisen at the historic moment, adopt this operational mode can avoid the increasing a series of problems brought of separate unit arc suppression coil capacity, utilize many various combinations to realize that the compensation of system capacitive current also has higher economical efficiency simultaneously than the low capacity arc suppression coil, also more flexible, so, this also is a development trend of neutral point resonance grounding operational mode, receives increasing concern.
At present, arc suppression coil adopts the operational mode of single-point compensation more, and the mode by one or several arc suppression coil parallel connection in a mini system compensates at same compensation point.If many extinguishing arcs are connected in parallel on the situation that same point compensates, compensation Load distribution concentrations.Off-capacity often means that scale of power is bigger, mends when a bigger system hinders serious mistake of the system that can have arc suppression coil when splitting into several subsystem for some reason, and the system that does not have arc suppression coil is again less than the situation of compensation, and compensation effect is not ideal enough.If the situation of an arc suppression coil, there is not top said problem during mini system, when system constantly increases, the problem that compensation meets concentrations exists equally, system hinders serious mistake of the system that also can have arc suppression coil when splitting into several subsystems for some reason to be mended, and the system that does not have arc suppression coil is again less than situation about compensating.
In addition, because the distribution network system capacitance current constantly increases, some local separate unit arc suppression coils can not satisfy the requirement of compensation capacity, and it is more and more higher for the manufacturing technique requirent of extinguishing arc equipment to continue to increase the arc suppression coil single-machine capacity, and economy and reliability also sharply descend.And can not fundamentally solve the problem of off-capacity like this, later power system capacity can face off-capacity again after increasing, and needs the problem of updating apparatus, constantly changes, updating apparatus also can cause extra burden to power supply department.
Therefore, existing arc suppression coil operation method all can not well solve the continuous problem that causes that increases of distribution network system capacitance current.
Summary of the invention
The present invention is directed to existing arc suppression coil operation method and can not well solve the problem that the continuous increase of distribution network system capacitance current causes, and the operational mode of the distributed compensation of a kind of arc suppression coil is provided.This mode is by increasing fixed compensation equipment at different compensation points, thereby in very large range change the total offset current of arc suppression coil group, and can make each subsystem balance substantially by make rational planning for compensation point and each point compensation capacity, thereby avoid occurring the situation of " have serious mistake of system of arc suppression coil to mend, the system that does not have arc suppression coil is again less than compensation ".
In order to achieve the above object, the present invention adopts following technical scheme:
The operational mode of the distributed compensation of a kind of arc suppression coil, this operational mode is based on the self-tuning arc-extinguishing complete set of equipments of a cover band automatic tuning capabilities and the fixed compensation extinguishing arc complete set of equipments that some covers are in the fixed compensation gear, described some cover fixed compensation extinguishing arc complete set of equipments distribute and are arranged at corresponding compensation node in the distribution network system, described fixed compensation extinguishing arc complete set of equipments is in the slave status, run on the setting compensation gear, in distribution network system, provide the fixed size offset current from each compensation node; Described self-tuning arc-extinguishing complete set of equipments is in the main frame status, according to distribution network system circuit switching state automatic tracking and compensating is calculated and realized to the vacancy size of system capacitive current and fixed compensation extinguishing arc complete set of equipments offset current.
Described some cover fixed compensation extinguishing arc complete set of equipments offset current sums are less than the system capacitive current size, and both differences should be within the described self-tuning arc-extinguishing complete set of equipments compensation range.
The position of described compensation node make distribution network system under the running status that routine may occur or distribution network system the division running status under, the offset current of the fixed compensation extinguishing arc complete set of equipments of the capacitance current of each subsystem and described compensation node is complementary.
Change in the distribution network system operational mode, when causing system capacitive current that bigger variation takes place, can pass through the operational taps of the fixed compensation extinguishing arc complete set of equipments of the corresponding compensation node of adjustment, in a big way, adjust the total condenser current compensation ability of distribution network system, to adapt to new operational mode.
The distributed compensation operational mode of arc suppression coil provided by the invention has the following advantages:
1. this mode can realize multiple spot inductance current compensation, under failure condition, when electrical network resolves into several sections, the localized network that arc suppression coil arranged still can be in its range of capacity independent compensation, roughly keep poised state;
2. because the compensation that distributes, that it goes without doing is very big for the arc suppression coil of each compensation point, grounding transformer capacity, so more helps design, manufacturing and the safe operation of equipment;
3. the compensation that distributes can realize that arc suppression coil is standby each other, when one fixedly arc suppression coil is out of service, because its finite capacity is little to the influence of system.
This operational mode has well solved system capacitive current and has constantly increased, the problem of automatic tuning arc depression coil compensation capacity deficiency, and choosing of compensation point is more versatile and flexible, for big capacity capacitance current of distribution network compensation way provides a kind of good alternatives, have a good application prospect.
Description of drawings
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Fig. 1 is the system diagram of many arc suppression coil on-line executes.
Fig. 2 is many arc suppression coil on-line execute equivalence Dai Weinan circuit theory diagrams.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
For realizing distributed compensation, automatic compensating arc extinguishing coil is installed, i.e. the self-tuning arc-extinguishing complete set of equipments in transformer station; Switching station under this transformer station, power distribution station etc. on the same electric pressure circuit, according to the capacitance current distribution situation of location, are installed the fixed arc suppression coil complete set of equipments of suitable capacity simultaneously.
In whole electrical network, the total offset current of arc suppression coil is whole complete set of equipments offset current sums.Therefore, as long as arc suppression coil total capacity and system equivalent electric capacity coupling can realize the compensation of similar unit operation by fixed compensation extinguishing arc complete set of equipments in parallel.
When many extinguishing arc complete set of equipments on-line executes, with the self-tuning arc-extinguishing complete set of equipments as main extinguishing arc equipment, other fixed compensation extinguishing arc complete set of equipments can not change reactance value automatically from extinguishing arc equipment, and reactance value is greater than the capacitance to earth value of place circuit as from extinguishing arc equipment.
Referring to Fig. 1, arc suppression coil L is main extinguishing arc equipment, 1 ..., i ..., n (n is a natural number) fixed compensation arc suppression coil is from extinguishing arc equipment.By changing the inductance value of main arc suppression coil L, main arc suppression coil L controller sampling obtains the system electrical amount, and then calculate the capacitance current of system behind the corresponding fixed compensation arc suppression coil in parallel, it also is the capacitance current (XCs represents the capacitive reactance of system capacitance, and XLp ' represents each slave unit arc suppression coil induction reactance in parallel) of Zp=jXCs//jXLp ' correspondence.
Utilize Thevenin's theorem to determine XC
SWith Z
P(as shown in Figure 2) relation, as shown in Figure 2, wherein, Uo ', Uo1 ' ... Uoi ' ... Uon ', be the unbalance voltage of each extinguishing arc branch road; L, L1 ... Li ... Ln, represent that each arc suppression coil, Cs are the total direct-to-ground capacitance of system.So corresponding system capacitive current (Z behind the fixed compensation arc suppression coil in parallel that obtains by previous calculations
PCorresponding capacitance current), can calculate simple system capacitance capacitive reactance XC
SThereby, calculate actual system capacitive current size, and automatic tuning arc depression coil transferred to the The optimal compensation gear automatically.
Therefore, can realize the calculating of system capacitive current under many extinguishing arc equipment on-line execute situations by the way, and regulate main extinguishing arc equipment operation gear, realize compensation automatically by controller.
Based on above-mentioned principle, the operational mode of the distributed compensation of arc suppression coil provided by the invention is a kind of operational mode that power network neutral point small current neutral grounding compensation the complete sets of equipment are used in combination that is used for.
The enforcement of this mode is based on the self-tuning arc-extinguishing complete set of equipments of a cover band automatic tuning capabilities and the fixed compensation extinguishing arc complete set of equipments that some covers are in the fixed compensation gear.
Wherein complete set of equipments mainly comprises: combination sideboard, three-phase isolation switch, grounding transformer, lightning arrester, voltage transformer, single-phase isolation switch, arc suppression coil, middle resistance, damping case, zero sequence CT, PK screen, secondary circuit, controller etc.
When concrete operation, some fixed compensation extinguishing arc complete set of equipments are distributed in the important compensation node of distribution network system, realize providing in distribution network system from each compensation node the function of fixed size offset current.The difference of simultaneity factor capacitance current and each fixed compensation electric current sum is compensated by the self-tuning arc-extinguishing complete set of equipments.
In the whole service mode, the controller of self-tuning arc-extinguishing complete set of equipments is the core of whole system, is controlling the action that combination sideboard is interior in the self-tuning arc-extinguishing complete set of equipments, PK shields interior first and second equipment; Primary equipment is finished the directly operation relevant with system in the combination sideboard; PK screen is realized being connected of primary equipment control signal and sampled signal etc. and controller, plays the effect of connection first and second equipment.These equipment are combined common realization system capacitive current are calculated and compensates.
The fixed compensation extinguishing arc complete set of equipments that relates among the present invention is in the slave status, runs on the setting compensation gear, realizes the target of compensation fixed size offset current in this way; And insert all fixed compensation extinguishing arc complete set of equipments offset current sums of distribution network system less than the system capacitive current size, both differences should be within the compensation range of self-tuning arc-extinguishing complete set of equipments.
For the compensation node that installs and fixes the compensating arc distinction complete set of equipments, be generally more important control points such as transformer station, switching station, the determining and to follow of fixed compensation node: under the running status that routine may occur or under system's division running status, the capacitance current and the offset current of each subsystem are complementary.
The self-tuning arc-extinguishing complete set of equipments that relates among the present invention is in the main frame status, its controller is the core of whole system, and automatic tracking and compensating is calculated and realized to system capacitive current and fixed compensation extinguishing arc equipment replacement electric current vacancy size by self-tuning arc-extinguishing equipment according to system line switching state.
Further, mode provided by the invention is when operation, when system operation mode changes, when causing system capacitive current that bigger variation takes place, can also be by adjusting fixed compensation extinguishing arc complete set of equipments operational taps, the total condenser current compensation ability of Adjustment System in a big way is to adapt to new operational mode.
Based on such scheme, it specifically implements as follows:
1. in conjunction with field condition, the constructing system model is simplified necessarily, the bucking-out system analytical model that obtains distributing, group's group analysis problem.
2. in conjunction with the distribute characteristics of compensation of whole distribution network system, adjust the hardware circuit and the software of the fixed compensation extinguishing arc complete set of equipments of each compensation point, make it change the corresponding pattern of slave operation into, to adapt to the needs of the compensation that distributes.
In conjunction with the distribute characteristics of compensation of whole distribution network system, be provided with that the self-tuning arc-extinguishing complete set of equipments is the online running status of distributed extinguishing arc transformer station in, and change calculation procedure, the calculation procedure of use on-line execute pattern.
3. in conjunction with the parameter of on-the-spot distribution network system and corresponding complete set of equipments thereof, determine extinguishing arc equipment operating mode and operational taps thereof.Fixed compensation point fixed compensation extinguishing arc complete set of equipments operational mode is set, and make it run on the suitable compensation gear, for guaranteeing the computational accuracy of self-tuning arc-extinguishing complete set of equipments, further adjust the structure of each fixed compensation point fixed compensation extinguishing arc complete set of equipments and damping resistance circuit, to adapt to on-the-spot needs.
4. determine distribution compensation capacity allocative decision and strategy, should accomplish: the offset current sum of each fixed compensation point arc suppression coil should be lower than the total capacitance current of system, by the capacitance current of the automatic tuning arc depression coil compensate for residual of transformer station, the advantage of performance automatic tuning arc depression coil.The distribution of capacity should guarantee under the various possible operational modes, and the subsystem of each independent operating does not all have the situation of obvious capacity shortcoming or far super desired volume.
The operational mode that combines with the self-tuning arc-extinguishing complete set of equipments by this fixedly extinguishing arc complete set of equipments resolution system capacitance current well realizes the automatic tuning and the compensation of big capacitance current system much larger than the problem of self-tuning arc-extinguishing complete set of equipments compensation capacity.
This mode is more flexible, economical.Under the fault condition, when system split into several sections, subsystem still can compensate in the certain limit, kept roughly balance of system capacitive current and offset current; Arc extinction compensation equipment is standby each other, and is little to the overall system influence when indivedual arc extinction compensation equipment are out of service, still can compensate preferably; Simultaneously, because single complete equipment capacity does not need to do very greatly, the design of equipment and manufacturing are more prone to realization, also more economically.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.Those skilled in the art should be able to understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. the operational mode of the distributed compensation of arc suppression coil, it is characterized in that, described operational mode is based on the self-tuning arc-extinguishing complete set of equipments of a cover band automatic tuning capabilities and the fixed compensation extinguishing arc complete set of equipments that some covers are in the fixed compensation gear, described some cover fixed compensation extinguishing arc complete set of equipments distribute and are arranged at corresponding compensation node in the distribution network system, described fixed compensation extinguishing arc complete set of equipments is in the slave status, run on the setting compensation gear, in distribution network system, provide the fixed size offset current from each compensation node; Described self-tuning arc-extinguishing complete set of equipments is in the main frame status, according to distribution network system circuit switching state automatic tracking and compensating is calculated and realized to the vacancy size of system capacitive current and fixed compensation extinguishing arc complete set of equipments offset current.
2. the operational mode of the distributed compensation of a kind of arc suppression coil according to claim 1, it is characterized in that, described some cover fixed compensation extinguishing arc complete set of equipments offset current sums are less than the system capacitive current size, and both differences should be within the described self-tuning arc-extinguishing complete set of equipments compensation range.
3. the operational mode of the distributed compensation of a kind of arc suppression coil according to claim 1, it is characterized in that, the position of described compensation node make distribution network system under the running status that routine may occur or distribution network system the division running status under, the offset current of the fixed compensation extinguishing arc complete set of equipments of the capacitance current of each subsystem and described compensation node is complementary.
4. the operational mode of the distributed compensation of a kind of arc suppression coil according to claim 1, it is characterized in that, change in the distribution network system operational mode, when causing system capacitive current that bigger variation takes place, can pass through the operational taps of the fixed compensation extinguishing arc complete set of equipments of the corresponding compensation node of adjustment, in in a big way, adjust the total condenser current compensation ability of distribution network system, to adapt to new operational mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102938600A CN101950957A (en) | 2010-09-27 | 2010-09-27 | Method for operating distributed compensation of arc suppression coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102938600A CN101950957A (en) | 2010-09-27 | 2010-09-27 | Method for operating distributed compensation of arc suppression coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101950957A true CN101950957A (en) | 2011-01-19 |
Family
ID=43454351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102938600A Pending CN101950957A (en) | 2010-09-27 | 2010-09-27 | Method for operating distributed compensation of arc suppression coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101950957A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097799A (en) * | 2011-01-25 | 2011-06-15 | 宁波市鄞州供电局 | Arc suppression coil compensating system and compensating method |
| CN102122817A (en) * | 2011-01-25 | 2011-07-13 | 宁波市鄞州供电局 | Balanced arc suppression coil-compensating system |
| CN102130450A (en) * | 2011-03-22 | 2011-07-20 | 江苏省电力试验研究院有限公司 | Distributed compensation method for single-phase grounded faults of distribution network |
| CN112688436A (en) * | 2021-03-15 | 2021-04-20 | 国网四川省电力公司电力科学研究院 | Arc suppression coil online sensing system and method based on power distribution internet of things |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0963025A2 (en) * | 1998-06-02 | 1999-12-08 | ABB Substation Automation Oy | Faulted feeder detection in earth fault in electricity distribution network |
| CN1588741A (en) * | 2004-07-08 | 2005-03-02 | 上海思源电气股份有限公司 | Combined automatic tracing arc extinction compensation and line selecting device |
| CN101212138A (en) * | 2006-12-25 | 2008-07-02 | 万达集团股份有限公司 | Capacitance-adjustable automatic compensating arc extinguishing coil |
| CN101369728A (en) * | 2008-10-15 | 2009-02-18 | 中国矿业大学 | Automatic tuning control method of arc suppression coil by compensation susceptance incremental method |
-
2010
- 2010-09-27 CN CN2010102938600A patent/CN101950957A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0963025A2 (en) * | 1998-06-02 | 1999-12-08 | ABB Substation Automation Oy | Faulted feeder detection in earth fault in electricity distribution network |
| CN1588741A (en) * | 2004-07-08 | 2005-03-02 | 上海思源电气股份有限公司 | Combined automatic tracing arc extinction compensation and line selecting device |
| CN101212138A (en) * | 2006-12-25 | 2008-07-02 | 万达集团股份有限公司 | Capacitance-adjustable automatic compensating arc extinguishing coil |
| CN101369728A (en) * | 2008-10-15 | 2009-02-18 | 中国矿业大学 | Automatic tuning control method of arc suppression coil by compensation susceptance incremental method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097799A (en) * | 2011-01-25 | 2011-06-15 | 宁波市鄞州供电局 | Arc suppression coil compensating system and compensating method |
| CN102122817A (en) * | 2011-01-25 | 2011-07-13 | 宁波市鄞州供电局 | Balanced arc suppression coil-compensating system |
| CN102130450A (en) * | 2011-03-22 | 2011-07-20 | 江苏省电力试验研究院有限公司 | Distributed compensation method for single-phase grounded faults of distribution network |
| CN112688436A (en) * | 2021-03-15 | 2021-04-20 | 国网四川省电力公司电力科学研究院 | Arc suppression coil online sensing system and method based on power distribution internet of things |
| CN112688436B (en) * | 2021-03-15 | 2021-06-29 | 国网四川省电力公司电力科学研究院 | Arc suppression coil online sensing system and method based on power distribution internet of things |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110741522B (en) | Arrangement for earth fault current compensation in an electric power network | |
| CN101950958B (en) | Capacitance-adjusting type arc suppression coil complete device and operation mod of same | |
| RU2644584C2 (en) | Device containing controlled grounding transformer | |
| CN106786636A (en) | A kind of power network neutral point flexible ground current compensation system | |
| CN101950957A (en) | Method for operating distributed compensation of arc suppression coil | |
| KR20180113524A (en) | METHOD FOR CONTROLLING A VARIABLE TRANSFORMER AND ELECTRIC SYSTEM COMBINING TWO AC NETWORKS | |
| CN103441501B (en) | Method for achieving arc suppression coil function by using high-voltage cascading type SVG | |
| CN108736361A (en) | Becoming platform on the closed integrated column of one kind | |
| CN112421621B (en) | Integrated intelligent distribution network operation monitoring cloud system based on 5G Internet of things | |
| CN103384066A (en) | Automatic tracking compensation system of turns adjusting type arc suppression coil | |
| CN201054500Y (en) | Direction ground arc-elimination and cable selection suite device | |
| Emhemed et al. | Protection analysis for plant rating and power quality issues in LVDC distribution power systems | |
| CN207039184U (en) | Automatic switchover earthing mode complexes | |
| CN204179658U (en) | Arc suppression coil is incorporated into the power networks system | |
| CN106208085B (en) | Breaker phase-controlled method based on frequency-tracking | |
| CN202068183U (en) | Arc suppression coil compensating system | |
| CN108183014A (en) | A kind of voltage transformer | |
| CN103730890A (en) | Method for restraining secondary arc current of transposition-free super-high voltage/ultra-high voltage transmission line | |
| Buchholz et al. | Modern technologies and the smart grid challenges in transmission networks | |
| CN201616334U (en) | Intelligent oil immersed transformer | |
| Helmi et al. | The application of power factor correction capacitors to reserve spare capacity of existing main transformers | |
| CN208835748U (en) | Arc suppression coil automatically tracks earthing compensation device | |
| Liu et al. | The compensation effect of the distributed Arc suppression coil in 10kV network system | |
| CN217063280U (en) | Full compensation device using stepless regulation arc suppression coil | |
| CN201966606U (en) | Balance type arc suppression coil compensating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110119 |