CN106026119B - Over long distances, the reactive-load compensation method of more load bus wire electric power systems - Google Patents
Over long distances, the reactive-load compensation method of more load bus wire electric power systems Download PDFInfo
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- CN106026119B CN106026119B CN201610366684.6A CN201610366684A CN106026119B CN 106026119 B CN106026119 B CN 106026119B CN 201610366684 A CN201610366684 A CN 201610366684A CN 106026119 B CN106026119 B CN 106026119B
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/30—Reactive power compensation
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Abstract
The invention discloses the reactive-load compensation method of a kind of distance, more load bus wire electric power systems, one, design over long distances, more load bus wire electric power systems when, rationally definite center switch station, the position at interconnection switch station；Interconnection switch station is disposed in adjacent two center switch station centre position；2nd, overhead transmission line length, the cable run length between each center switch station and adjacent interconnection switch station are calculated, and calculates the electrical centre position of line-to-ground capacity current, fuser station is set in electrical centre position；3rd, according to centralized compensation reactive power compensation is carried out with the principle that dispersion compensation is combined.The phenomenon that power factor is relatively low, remarkable in economical benefits are greatly improved the invention has the advantages that realizing.
Description
Technical field
The present invention relates to electric power system reactive-load compensation method, more particularly, to long range, more load bus wire power supply system
The reactive-load compensation method of system.
Background technology
Over long distances, more load bus wire electric power systems are widely used in long range large water transportation water delivery engineering, at a high speed public affairs
In the engineerings such as road, high ferro, urban subway tunnel.Its main feature is that along the line（Along supply line）Load bus is more.Now with big over long distances
Exemplified by type water transfer water delivery trunk canal, bleeder gate, control gate, water-break gate, emergency repair gate and other buildings along the line
There are many object, load bus mostly so that used in number of cables also increase therewith, and electric power system is linear additionally arranges, therefore causes
Electric power system power factor is too low, causes the waste of electric energy, and the power tune expense that grid company is imposed is consequently increased, and adds power supply
The operating cost of system.Center switch station power factor is advanced and far below standard value, causes the folding of disjunction equipment difficult, works as hair
During raw singlephase earth fault, earthing capacitance current will also greatly increase, and electric arc is not easy to extinguish, and causes failure propagation, exists simultaneously
Harmonic pollution power supply environmental problem.
The content of the invention
Present invention aims at the reactive-load compensation methods for providing a kind of long range, more load bus wire electric power systems.
To achieve the above object, the present invention takes following technical proposals：
Long range of the present invention, the reactive-load compensation method of more load bus wire electric power systems, as steps described below into
Row：
The first step, when designing the long range, more load bus wire electric power systems, according to the load of more load buses
Distribution rationally determines center switch station, the position at interconnection switch station；Center switch station position considers drawing for power supply point
It connects, supply load scope, supply load size, power supply distance factor；The interconnection switch station is disposed in adjacent two center
Switchyard centre position；Over long distances, more load bus wire electric power systems are arranged as required to multiple center switch stations and contact
Switchyard, the interconnection switch at interconnection switch station is off during normal operation, and each center switch station radius of electricity supply is two-phase
The half of distance between adjacent center switch station；
Overhead transmission line length, cable run between second step, each center switch station of calculating and adjacent interconnection switch station
Length, and the electrical centre position of the line-to-ground capacity current is calculated, in the electrical centre position, fuser station is set,
The fuser station provides equipment position for the reactive-load compensation of electric power system；
3rd step, the principle being combined according to centralized compensation with dispersion compensation；
The centralized compensation is：It is idle to adjacent interconnection switch station line-to-ground capacity current to calculate each center switch station
Power capacity, the bus bar side at each center switch station implement lagging reactive power compensation, perception by dynamic reactive compensation device
Reactive power capacity is in the 30% of the center switch station to the adjacent interconnection switch station transmission line of electricity capacity current capacity of bilateral and this
Heart switchyard is the sum of to power system transformer substation transmission line of electricity capacity current capacity；
The center switch station, interconnection switch station, fuser station belong to load bus, exist including other load buses
Interior, each load bus all there are electrical equipment, also influences center when the method for operation of equipment changes, in a certain range and opens
The power factor of station busbar is closed, therefore the bus bar side at center switch station sets dynamic reactive compensation device, realizes centralized compensation.
The dispersion compensation is：Calculate each center switch station to adjacent interconnection switch station transmission line of electricity capacity current over the ground
Reactive power capacity implements lagging reactive power compensation, perceptual nothing in respective fuser station bus bar side by constant reactance device
Work(power capacity is the center switch station to the 70% of adjacent interconnection switch station transmission line of electricity capacity current.
The phenomenon that power factor is relatively low, remarkable in economical benefits are greatly improved the invention has the advantages that realizing；Using concentrate with
The ratio of the shared compensation demand capacity of the reactive-load compensation that dispersed phase combines, reasonable distribution centralized compensation capacity and dispersion compensation capacity
Example, the lagging reactive power of constant reactance device output offset the capacitive charging reactive power that line cord generates, reduce capacitive
Caused by reactive power the problem of overtension, good action is played to the operational safety of electric power supply system equipment；Each center switch
It stands and implements dynamic passive compensation realization perception, the bidirectional compensating of capacitive reactive power, dynamic tracks real-time compensation, reaches automatic tune
Section compensation, the function of filtering, it is therefore prevented that harmonic pollution power supply environment meets demand of the electric power system to harmonic wave control, reduces
Energy loss in electric power system.
Description of the drawings
Fig. 1 is the structure diagram that the present invention implements design.
Specific embodiment
As shown in Figure 1, long range of the present invention, the reactive-load compensation method of more load bus wire electric power systems, now with
It is described between two center switch stations 1,2 for Typical Representative：
First, second center switch station 1,2 is each responsible for respective power supply area, first, second center switch station 1,2
Leading-out terminal respectively constitutes respective wire electric power system, and wire electric power system is opened by the contact at interconnection switch station 3,3.1,3.2
4,4.1,4.2 connections are closed, interconnection switch station 3 is disposed in the interposition of distance between first, second center switch station 1,2
It puts；The interconnection switch 4 at interconnection switch station 3 is off during wire electric power system normal operation, wire electric power system according to
Design requirement is respectively provided with multiple load buses 1.1,2.1 etc., the end of incoming cables at first, second center switch station 1,2 respectively with
35kV electric system connects.
It is each aerial between bilateral interconnection switch station 3,3.1,3.2 that first, second center switch station 1,2 is calculated respectively
Then line length and cable run length calculate overhead transmission line described in respective bilateral and cable run capacity current over the ground
Electrical centre position sets fuser station 1.2,1.22,2.2,2.22 in respective bilateral electrical centre position；It is of the present invention
Load bus centered on all step-down substations in switchyard, interconnection switch station, fuser station and electric power system；When the electricity
Gas center is located at some load bus position（Or close to some load bus）When, fuser station may be provided in load bus
Locate, the let-down stations at the load bus become selected fuser station, have so not only been convenient for management but also have saved fuser station
Construction cost.
The principle being combined according to centralized compensation with dispersion compensation：
The centralized compensation is：（1）, calculate the first center switch station 1 to two sections of lines between bilateral interconnection switch station 3 and 3.1
The reactive power capacity of road capacity current over the ground；（2）, calculate the second center switch station 2 between bilateral interconnection switch station 3 and 3.2
The reactive power capacity of twolink capacity current over the ground；（3）, respectively calculate first, second center switch station 1,2 to corresponding
The reactive power capacity of transmission line of electricity between electric system capacity current over the ground；（4）, respectively in first, second center switch
Stand 1,2 bus bar side set dynamic reactive compensation device 1.3,2.3 implement lagging reactive power compensation.Dynamic reactive compensation device
1.3 lagging reactive power capacity are the center switch station 1 to two sections of power transmission line appearances of a street between the adjacent interconnection switch station 3 and 3.1 of bilateral
Property current capacity 30% with the center switch station 1 the sum of to 35kV power system transformer substation transmission line of electricity capacity current capacity；It is dynamic
2.3 lagging reactive power capacity of state reactive power compensator is the center switch station 2 between the adjacent interconnection switch station 3 and 3.2 of bilateral
The 30% of two sections of transmission line of electricity capacity current capacity and the center switch station 2 to 35kV power system transformer substation transmission line of electricity capacitives
The sum of current capacity.
The dispersion compensation is：Calculate respectively first, second center switch station 1,2 to bilateral interconnection switch station 3,3.1,
The reactive power capacity of 3.2 transmission lines of electricity capacity current over the ground, it is then female in respective fuser station 1.2,1.22,2.2,2.22
Line side sets constant reactance device 1.4,1.44,2.4,2.44 to implement lagging reactive power compensation；1.4 inductive reactive power of constant reactance device
Switchyard 1 is to the 70% of 3 transmission line of electricity capacity current reactive power capacity of interconnection switch station centered on power capacity；Constant reactance
Switchyard 2 is to 3 transmission line of electricity capacity current reactive power capacity of interconnection switch station centered on 2.4 lagging reactive power capacity of device
70%；Switchyard 1 is electric to 3.1 transmission line of electricity capacitive of interconnection switch station centered on 1.44 lagging reactive power capacity of constant reactance device
Flow the 70% of reactive power capacity；Switchyard 2 is to interconnection switch station centered on 2.44 lagging reactive power capacity of constant reactance device
The 70% of 3.2 transmission line of electricity capacity current reactive power capacity.
Claims (1)
1. a kind of reactive-load compensation method of long range, more load bus wire electric power systems, it is characterised in that：As steps described below
It carries out：
The first step, when designing the long range, more load bus wire electric power systems, according to the load of more load buses point
Cloth rationally determines center switch station, the position at interconnection switch station；Center switch station position considers drawing for power supply point
It connects, supply load scope, supply load size, power supply distance factor；The interconnection switch station is disposed in adjacent two center
Switchyard centre position；Over long distances, more load bus wire electric power systems according to design requirement set multiple center switch stations and
Interconnection switch station, the interconnection switch at interconnection switch station is off during normal operation, and each center switch station radius of electricity supply is
The half of distance between two adjacent center switch stations；
Overhead transmission line length, cable run length between second step, each center switch station of calculating and adjacent interconnection switch station,
And the electrical centre position of the overhead transmission line, cable run capacity current over the ground is calculated, it is set in the electrical centre position
Fuser station, the fuser station provide equipment position for the reactive-load compensation of electric power system；
The principle that 3rd step, reactive-load compensation are combined according to centralized compensation with dispersion compensation；
The centralized compensation is：Calculate the idle of each center switch station to adjacent interconnection switch station transmission line of electricity capacity current over the ground
Power capacity, the bus bar side at each center switch station implement lagging reactive power compensation, perception by dynamic reactive compensation device
Reactive power capacity is in the 30% of the center switch station to the adjacent interconnection switch station transmission line of electricity capacity current capacity of bilateral and this
Heart switchyard is the sum of to power system transformer substation transmission line of electricity capacity current capacity；
The center switch station, interconnection switch station, fuser station belong to load bus, including other load buses, respectively
Load bus all there are electrical equipment, when the method for operation of equipment changes, also influences center switch station in a certain range
The power factor of busbar, therefore the bus bar side at center switch station sets dynamic reactive compensation device, realizes centralized compensation；
The dispersion compensation is：Calculate the idle of each center switch station to adjacent interconnection switch station transmission line of electricity capacity current over the ground
Power capacity implements lagging reactive power compensation, inductive reactive power work(in respective fuser station bus bar side by constant reactance device
Rate capacity is the center switch station to the 70% of adjacent interconnection switch station transmission line of electricity capacity current reactive power capacity.
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| CN201610366684.6A CN106026119B (en) | 2016-05-30 | 2016-05-30 | Over long distances, the reactive-load compensation method of more load bus wire electric power systems |
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| CN201610366684.6A CN106026119B (en) | 2016-05-30 | 2016-05-30 | Over long distances, the reactive-load compensation method of more load bus wire electric power systems |
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| CN106026119B true CN106026119B (en) | 2018-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2813005C1 (en) * | 2023-08-18 | 2024-02-06 | федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") | METHOD OF POWER SUPPLY TO CONSUMERS IN CASE OF DAMAGE TO PHASE OF 110 kV ELECTRICAL NETWORK |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181265B (en) * | 2017-07-11 | 2019-06-18 | 刘儒水 | Distribution line one-point or multi-point reactive-load compensation method and device |
| CN110289617A (en) * | 2019-07-03 | 2019-09-27 | 厦门理工学院 | A kind of building harmonic compensation method, terminal device and storage medium |
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| CN101872969A (en) * | 2010-07-14 | 2010-10-27 | 吉林省电力有限公司电力科学研究院 | Capacitive grounding current distributed compensation method and device for medium-voltage power supply system |
| CN202503293U (en) * | 2012-03-12 | 2012-10-24 | 青海电力科学试验研究院 | Dynamic reactive power compensation device for long-distance transmission line of power grid |
| CN103078329A (en) * | 2013-02-05 | 2013-05-01 | 江苏科能电力工程咨询有限公司 | Output reactive compensation analysis method for long-distance 200kV submarine cable of offshore wind plant |
| CN104767210A (en) * | 2015-04-08 | 2015-07-08 | 广西诺思贝电气股份有限公司 | Reactive collaborative compensation system and method of power distribution network low voltage circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE510197C2 (en) * | 1997-02-06 | 1999-04-26 | Asea Brown Boveri | Method and apparatus for controlling a capacitor device for a shunt-coupled static compensator unit with unblocking signals to indicate non-current state of input valves |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101872969A (en) * | 2010-07-14 | 2010-10-27 | 吉林省电力有限公司电力科学研究院 | Capacitive grounding current distributed compensation method and device for medium-voltage power supply system |
| CN202503293U (en) * | 2012-03-12 | 2012-10-24 | 青海电力科学试验研究院 | Dynamic reactive power compensation device for long-distance transmission line of power grid |
| CN103078329A (en) * | 2013-02-05 | 2013-05-01 | 江苏科能电力工程咨询有限公司 | Output reactive compensation analysis method for long-distance 200kV submarine cable of offshore wind plant |
| CN104767210A (en) * | 2015-04-08 | 2015-07-08 | 广西诺思贝电气股份有限公司 | Reactive collaborative compensation system and method of power distribution network low voltage circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2813005C1 (en) * | 2023-08-18 | 2024-02-06 | федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") | METHOD OF POWER SUPPLY TO CONSUMERS IN CASE OF DAMAGE TO PHASE OF 110 kV ELECTRICAL NETWORK |
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Address after: 450003 Zhengzhou Jinshui Road, Henan, No. 109 Patentee after: Yellow River Survey Planning and Design Research Institute Co., Ltd. Address before: 450003 Zhengzhou Jinshui Road, Henan, No. 109 Patentee before: Yellow River Engineering Consulting Co., Ltd. |
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