CN112202181A - Voltage-regulating and voltage-dividing ratio design method of hybrid full-compensation system based on fault phase residual voltage - Google Patents
Voltage-regulating and voltage-dividing ratio design method of hybrid full-compensation system based on fault phase residual voltage Download PDFInfo
- Publication number
- CN112202181A CN112202181A CN202011017393.9A CN202011017393A CN112202181A CN 112202181 A CN112202181 A CN 112202181A CN 202011017393 A CN202011017393 A CN 202011017393A CN 112202181 A CN112202181 A CN 112202181A
- Authority
- CN
- China
- Prior art keywords
- phase
- voltage
- power supply
- regulating transformer
- phase power
- 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
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims abstract description 94
- 230000009466 transformation Effects 0.000 claims abstract description 36
- 230000001629 suppression Effects 0.000 claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005457 optimization Methods 0.000 abstract 1
- 238000004364 calculation method Methods 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
Abstract
The application provides a mixed full compensation system voltage regulating transformer voltage division ratio design method based on fault phase residual voltage, which comprises the following steps: presetting a maximum allowable residual voltage value of a ground fault current compensation system of a self-generated power phase power supply; when the connection groups of the phase power supply generator and the phase power supply phase compensator are both DY, acquiring the maximum grounding resistance of the system during single-phase grounding; acquiring rated data of an arc suppression coil, and acquiring no-load voltage of the voltage regulating transformer based on the maximum allowable residual voltage value, the maximum ground resistance and the rated data of the arc suppression coil; acquiring a reference transformation ratio of the regulating transformer based on the no-load voltage of the regulating transformer; and determining the level difference of the regulating transformer based on the reference transformation ratio of the regulating transformer. The method and the device can effectively reduce the production and manufacturing cost of the compensating transformer, avoid the problem of unqualified design in engineering application, are important theoretical bases for designing a hybrid full-compensation system, and can greatly improve the compensation precision through the optimization design of the voltage division ratio of the compensating transformer.
Description
Technical Field
The application relates to the technical field of power distribution network compensation of a power system, in particular to a voltage regulating and voltage dividing ratio design method of a hybrid full-compensation system based on fault phase residual voltage.
Background
The single-phase earth fault of the power distribution network at home and abroad accounts for more than 80 percent, the safe operation of the power grid and equipment is seriously influenced, and the safe processing of the earth fault plays an important role in social and economic development. When the capacitance current of the system is more than 10A, an arc suppression coil grounding mode is adopted. The arc suppression coil can reduce the fault current to a certain extent, and the system can take the trouble to operate for 2 hours, but the arc suppression coil can not realize full compensation, and the fault point still has the residual current that is less than 10A, and the existence of residual current can cause the person to electrocute, the conflagration accident to and threaten the safe and stable operation of electric wire netting and equipment seriously. When the capacitance current of the system is large, a small resistance grounding mode is mostly adopted, when a single-phase grounding fault occurs, the zero sequence current of the fault line is amplified, and the relay protection device quickly cuts off the fault line.
In order to thoroughly eliminate the damage of the single-phase earth fault and ensure the power supply reliability, various methods for completely compensating the current of the single-phase earth fault point are provided at home and abroad. For example: the GFN (ground fault neutralizer) manufactured by swedish neutral in sweden represents the realization of full compensation of ground faults by using power electronic active power sources, and a power distribution network ground fault arc extinction and protection method (CN102074950A) also belongs to active full compensation in principle. On the other hand, there are also patents (CN201910992110.3, CN201910992109.0, etc.) for a system and a method for compensating for a ground fault current of a self-generated phase power supply, which have certain advantages in terms of cost and stability because of using a phase power supply converter and no power electronic power supply. When the compensation system utilizes the voltage regulating transformer to perform ground compensation regulation, the transformation ratio of the transformer affects the output voltage of the ground compensation, and further affects the compensation effect of the system.
A rated transformation ratio calculation method is provided by an analysis method (CN202010081976.1 and CN202010081977.6) of a full compensation system voltage drop of the existing patent, a compensation adjustment method (application number CN202010081967.2) of a self-generated power supply ground fault compensation system of the existing patent, and the like, but the influence of residual voltage is not considered in the design, only the rated transformation ratio is provided, and the voltage division ratio change introduced by residual voltage control is not considered, so that the accurate control of the residual voltage of the single-phase ground fault of the power distribution system cannot be realized. Therefore, a basic theory and a calculation method for voltage division ratio design of a voltage regulating transformer of a hybrid full compensation system are not available in the prior art, the production and manufacturing cost of the compensation transformer is not easy to control, the problem of unqualified design in engineering application often occurs, the compensation precision is greatly reduced, and the manufacturing cost is increased.
Disclosure of Invention
The application provides a mixed full compensation system voltage regulating transformer voltage division ratio design method based on fault phase residual voltage, and aims to solve the problem of low compensation effect in the prior art.
In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:
the application provides a mixed full compensating system voltage regulation becomes voltage division ratio design method based on trouble phase residual voltage, the design method is applied to the earth fault current compensating system who produces power supply phase power certainly, the earth fault current compensating system who produces power supply phase power certainly includes: the line phase-change converter comprises a phase power supply generator and a phase power supply phase compensator, and the voltage regulating transformer comprises an arc suppression coil; the method comprises the following steps:
presetting a maximum allowable residual voltage value of a ground fault current compensation system of the self-generated power supply phase power supply;
when the connection groups of the phase power supply generator and the phase power supply phase compensator are both DY, acquiring the maximum grounding resistance of the ground fault current compensation system of the self-generated power supply phase power supply when the phase power supply generator and the phase power supply phase compensator are grounded in a single phase;
acquiring rated data of an arc suppression coil, and acquiring no-load voltage of the voltage regulating transformer based on the maximum allowable residual voltage value, the maximum ground resistance and the rated data of the arc suppression coil;
acquiring a reference transformation ratio of the regulating transformer based on the no-load voltage of the regulating transformer;
and determining the level difference of the regulating transformer based on the reference transformation ratio of the regulating transformer.
Optionally, the maximum allowable residual voltage value of the ground fault current compensation system of the self-generated power phase power supply is set to be in a range of 0-200V.
Optionally, the obtaining of the maximum ground resistance of the ground fault current compensation system of the self-generated power supply phase power supply when the single phase is grounded includes:
obtaining rated parameters of a ground fault current compensation system of a self-generated power phase power supply, wherein the rated parameters comprise: three-phase nominal phase voltage and single phase ground admittance;
calculating the maximum grounding resistance when the single-phase is grounded:
wherein:
abs denotes a modulo function.
Optionally, the obtaining the no-load voltage of the voltage regulating transformer based on the maximum allowable residual voltage value and the maximum ground resistance includes:
wherein:
Ucis the maximum allowable residual voltage value;
is single relative admittance;
admittance of an arc suppression coil;
Optionally, the obtaining of the reference transformation ratio of the voltage regulating transformer based on the no-load voltage of the voltage regulating transformer includes:
obtaining rated parameters of a ground fault current compensation system of a self-generated power phase power supply, wherein the rated parameters comprise: the voltage ratio of the phase power supply generator, the voltage ratio of the phase power supply phase compensator, the primary side equivalent impedance of the line phase transformer and the primary side equivalent impedance of the regulating transformer;
calculating the reference transformation ratio of the regulating transformer:
wherein:
korgis the reference transformation ratio of the voltage regulating transformer;
m is the voltage ratio of the phase power supply generator, and n is the voltage ratio of the phase power supply phase compensator;
ZEdistributing parallel impedance of capacitance impedance and arc suppression coil impedance for the system to the ground;
Optionally, the determining the level difference of the regulating transformer based on the reference transformation ratio of the regulating transformer includes:
wherein:
Ustepthe step difference of the voltage regulating transformer;
m is the voltage ratio of the phase power supply generator, and n is the voltage ratio of the phase power supply phase compensator;
abs is a modulo function.
Compared with the prior art, the beneficial effect of this application is:
the application provides a mixed full compensation system voltage regulating transformer voltage division ratio design method based on fault phase residual voltage, which comprises the following steps: presetting a maximum allowable residual voltage value of a ground fault current compensation system of a self-generated power phase power supply; when the connection groups of the phase power supply generator and the phase power supply phase compensator are both DY, acquiring the maximum grounding resistance of a ground fault current compensation system of the self-generated phase power supply when the single phase is grounded; acquiring rated data of an arc suppression coil, and acquiring no-load voltage of the voltage regulating transformer based on the maximum allowable residual voltage value, the maximum ground resistance and the rated data of the arc suppression coil; acquiring a reference transformation ratio of the regulating transformer based on the no-load voltage of the regulating transformer; the level difference of the regulating transformer is determined based on the reference transformation ratio of the regulating transformer. The application designs the transformation ratio of the regulating transformer in the earth fault current compensation system of the self-generating power supply phase power supply comprising the arc suppression coil, realizes the regulation and control of the output voltage of the earth compensation, and improves the compensation effect of the system earth compensation. The method can also effectively reduce the production and manufacturing cost of the compensating transformer, avoid the problem of unqualified design in engineering application, is an important theoretical basis for the design of a hybrid full-compensation system, and can greatly improve the compensation precision by the optimized design of the voltage division ratio of the compensating transformer.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is an overall flowchart of a voltage regulating ratio design method of a hybrid total compensation system based on fault phase residual voltage according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a ground fault current compensation system for self-generated phase power supply according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, an overall flowchart of a voltage regulating ratio design method of a hybrid total compensation system based on fault phase residual voltage is provided in the embodiment of the present invention. As shown in fig. 1, the method comprises the steps of:
s1, presetting the maximum allowable residual voltage value of the earth fault current compensation system of the self-generated power supply phase power supply;
s2, when the connection group of the phase power supply generator and the phase power supply phase compensator is DY, acquiring the maximum grounding resistance of the ground fault current compensation system of the self-generated power supply phase power supply when the single phase is grounded;
s3, acquiring rated data of an arc suppression coil, and acquiring no-load voltage of the voltage regulating transformer based on the maximum allowable residual voltage value, the maximum grounding resistance and the rated data of the arc suppression coil;
s4, acquiring a reference transformation ratio of the regulating transformer based on the no-load voltage of the regulating transformer;
and S5, determining the level difference of the regulating transformer based on the reference transformation ratio of the regulating transformer.
It should be noted that the voltage-regulating voltage-variation ratio design method of the hybrid full-compensation system based on the residual voltage of the fault phase, provided by the embodiment of the present invention, is applied to a ground fault current compensation system of a self-generated power supply phase power supply, and the ground fault current compensation system of the self-generated power supply phase power supply is the prior art.
Specifically, as shown in fig. 2, it is a schematic structural diagram of a ground fault current compensation system for self-generated phase power supply in the embodiment of the present invention.
A ground fault current compensation system for self-generating phase power supply comprising: the device comprises a line phase converter, a fling-cut switch 3, a controller 4 and a regulating transformer 5. The input end of the line phase converter is connected with the bus, and the output end of the line phase converter is connected with the fling-cut switch 3; the switching-on switch 3 is connected with the input end of the regulating transformer 5, and the output end of the regulating transformer 5 is connected with the system neutral point. The line-phase converter comprises a phase power supply generator 1 and a phase power supply phase compensator 2. The voltage regulating transformer 5 does not include an arc suppression coil.
The individual steps are described in detail below:
in step S1, the maximum allowable residual voltage value of the ground fault current compensation system from which the phase power supply is generated is set in advance.
Specifically, in order to ensure personal safety, the setting range of the maximum allowable residual voltage value of the earth fault current compensation system for the self-generated power phase power supply is set to be 0-200V in the embodiment of the invention.
In step S2, when the coupling groups of the phase power supply generator and the phase power supply phase compensator are both DY, the maximum ground resistance of the ground fault current compensation system of the self-generated phase power supply when the single phase is grounded is obtained.
It should be noted that, in the embodiment of the present invention, the connection groups of the phase power supply generator and the phase compensator are all in a DY connection manner.
Specifically, step S2 includes the following steps:
s201, obtaining rated parameters of a ground fault current compensation system of a self-generated power phase power supply, wherein the rated parameters comprise: three phase nominal phase voltages and a single phase to ground admittance.
In particular, data sources for system rating parameters are well known to those skilled in the art.
S202, calculating the maximum grounding resistance when the single phase is grounded. The calculation formula is as follows:
wherein:
abs denotes a modulo function.
In step S3, arc suppression coil rated data is acquired, and the no-load voltage of the voltage regulator transformer is acquired based on the maximum allowable residual voltage value, the maximum ground resistance, and the arc suppression coil rated data.
Specifically, the arc suppression coil rated data is arc suppression coil admittance.
The calculation formula of the no-load voltage of the regulating transformer is as follows:
wherein:
Ucis the maximum allowable residual voltage value;
is single relative admittance;
admittance of an arc suppression coil;
In step S4, a reference transformation ratio of the voltage regulating transformer is acquired based on the no-load voltage of the voltage regulating transformer.
Specifically, step S4 includes the following steps:
s401, obtaining rated parameters of a ground fault current compensation system of a self-generated power phase power supply, wherein the rated parameters comprise: the voltage ratio of the phase power supply generator, the voltage ratio of the phase power supply phase compensator, the primary side equivalent impedance of the line phase transformer and the primary side equivalent impedance of the regulating transformer.
S402, calculating a reference transformation ratio of the voltage regulating transformer, wherein the calculation formula is as follows:
wherein:
korgis the reference transformation ratio of the voltage regulating transformer;
m is the voltage ratio of the phase power supply generator, and n is the voltage ratio of the phase power supply phase compensator;
ZEdistributing parallel impedance of capacitance impedance and arc suppression coil impedance for the system to the ground;
In step S5, the step difference of the voltage-regulating transformer is determined based on the reference transformation ratio of the voltage-regulating transformer.
Specifically, the primary side rated phase voltage of the voltage regulating transformer is obtained first. And then determining the level difference of the regulating transformer, wherein the calculation formula is as follows:
wherein:
Ustepthe step difference of the voltage regulating transformer;
m is the voltage ratio of the phase power supply generator, and n is the voltage ratio of the phase power supply phase compensator;
abs is a modulo function.
In one embodiment of the present invention, the method is illustrated by specific examples.
Specifically, firstly, the maximum allowable residual voltage value of the system is determined to be UC＝100V。
Obtaining rated parameters of a ground fault current compensation system for self-generating phase power supply, comprising: the single-phase-to-ground distributed capacitance of the system is 10uF, and the single-phase-to-ground admittance of the system
The inductance of the arc suppression coil is 0.31H, the inductive reactance is 97.39j omega, and the admittance of the arc suppression coil is-0.0103 jS. The capacity of the phase power supply generator is 200kVA, the short-circuit impedance is 4 percent, the voltage ratio is 10kV/10kV, the equivalent reactance of the primary side of the phase power supply generator
The capacity of the phase compensator of the phase power supply is 200kVA, the short-circuit impedance is 4 percent, the voltage transformation ratio is 10kV/10kV, the primary side equivalent reactance of the phase compensator of the phase power supply
The capacity of the regulating transformer is 60kVA, the rated voltage of the primary side is 5.773kV, the short-circuit impedance is 4 percent, and the equivalent reactance of the primary side of the regulating transformer
Conversion of self-produced power supply to neutral pointEquivalent admittance
Is-0.0197 jS.
And obtaining the maximum grounding resistance value of the system single-phase grounding according to calculation, wherein the maximum grounding resistance value is 700 omega.
And calculating the no-load voltage of the voltage regulating transformer to be 6124V under the conditions of the maximum allowable residual voltage and the maximum grounding resistance according to a no-load voltage calculation formula. Calculating the reference transformation ratio k of the compensation voltage regulating transformer according to the full compensation transformation ratio formulaorgIs 0.949.
And determining the level difference of the grounding compensation regulating transformer to be 84V according to the voltage regulator transformation ratio and the level difference determination method.
In summary, compared with the prior art, the method has the following beneficial effects:
the maximum allowable residual voltage value of the earth fault current compensation system of the self-generated power phase power supply is preset; when the connection groups of the phase power supply generator and the phase power supply phase compensator are both DY, acquiring the maximum grounding resistance of a grounding fault current compensation system of the self-generating power supply phase power supply when the single phase is grounded; acquiring rated data of an arc suppression coil, and acquiring no-load voltage of the voltage regulating transformer based on the maximum allowable residual voltage value, the maximum ground resistance and the rated data of the arc suppression coil; acquiring a reference transformation ratio of the regulating transformer based on the no-load voltage of the regulating transformer; and determining the level difference of the regulating transformer based on the reference transformation ratio of the regulating transformer. The application designs the transformation ratio of the regulating transformer in the self-generating power supply phase power supply ground fault current compensation system comprising the arc suppression coil, realizes the regulation and control of the output voltage of the ground compensation, and improves the compensation effect of the system ground compensation. The method can also effectively reduce the production and manufacturing cost of the compensating transformer, avoid the problem of unqualified design in engineering application, is an important theoretical basis for the design of a hybrid full-compensation system, and can greatly improve the compensation precision by the optimized design of the voltage division ratio of the compensating transformer.
It is noted that, in this specification, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such circuit structure, article, or apparatus. The term "comprising" a defined element does not, without further limitation, exclude the presence of other like elements in a circuit structure, article, or device that comprises the element.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims. The above-described embodiments of the present application do not limit the scope of the present application.
Claims (6)
1. A voltage regulating and voltage dividing ratio design method of a hybrid full-compensation system based on fault phase residual voltage is characterized in that the design method is applied to a ground fault current compensation system of a self-generated power phase power supply, and the ground fault current compensation system of the self-generated power phase power supply comprises the following steps: the line phase-change converter comprises a phase power supply generator and a phase power supply phase compensator, and the voltage regulating transformer comprises an arc suppression coil; the method comprises the following steps:
presetting a maximum allowable residual voltage value of a ground fault current compensation system of the self-generated power supply phase power supply;
when the connection groups of the phase power supply generator and the phase power supply phase compensator are both DY, acquiring the maximum grounding resistance of the ground fault current compensation system of the self-generated power supply phase power supply when the phase power supply generator and the phase power supply phase compensator are grounded in a single phase;
acquiring rated data of an arc suppression coil, and acquiring no-load voltage of the voltage regulating transformer based on the maximum allowable residual voltage value, the maximum ground resistance and the rated data of the arc suppression coil;
acquiring a reference transformation ratio of the regulating transformer based on the no-load voltage of the regulating transformer;
and determining the level difference of the regulating transformer based on the reference transformation ratio of the regulating transformer.
2. The design method according to claim 1, wherein the maximum allowable residual voltage value of the ground fault current compensation system of the self-generated phase power supply is set within a range of 0 to 200V.
3. The design method according to claim 1, wherein the obtaining of the maximum ground resistance of the ground fault current compensation system of the self-generated phase power supply when the system is grounded in a single phase comprises:
obtaining rated parameters of a ground fault current compensation system of a self-generated power phase power supply, wherein the rated parameters comprise: three-phase nominal phase voltages and single phase ground admittance;
calculating the maximum grounding resistance when the single-phase is grounded:
wherein:
abs denotes a modulo function.
4. The design method of claim 3, wherein the arc suppression coil rating data comprises arc suppression coil admittance;
the obtaining of the no-load voltage of the voltage regulating transformer comprises the following steps:
wherein:
Ucis the maximum allowable residual voltage value;
is single relative admittance;
admittance of an arc suppression coil;
5. The design method according to claim 1, wherein the obtaining the reference transformation ratio of the regulating transformer based on the no-load voltage of the regulating transformer comprises:
obtaining rated parameters of a ground fault current compensation system of a self-generated power phase power supply, wherein the rated parameters comprise: the voltage ratio of the phase power supply generator, the voltage ratio of the phase power supply phase compensator, the primary side equivalent impedance of the line phase transformer and the primary side equivalent impedance of the regulating transformer;
calculating the reference transformation ratio of the regulating transformer:
wherein:
korgis the reference transformation ratio of the voltage regulating transformer;
m is the voltage ratio of the phase power supply generator, and n is the voltage ratio of the phase power supply phase compensator;
ZEdistributing parallel impedance of capacitance impedance and arc suppression coil impedance for the system to the ground;
6. The design method of claim 1, wherein determining the level difference of the regulating transformer based on the reference transformation ratio of the regulating transformer comprises:
wherein:
Ustepthe step difference of the voltage regulating transformer;
m is the voltage ratio of the phase power supply generator, and n is the voltage ratio of the phase power supply phase compensator;
abs is a modulo function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011017393.9A CN112202181A (en) | 2020-09-24 | 2020-09-24 | Voltage-regulating and voltage-dividing ratio design method of hybrid full-compensation system based on fault phase residual voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011017393.9A CN112202181A (en) | 2020-09-24 | 2020-09-24 | Voltage-regulating and voltage-dividing ratio design method of hybrid full-compensation system based on fault phase residual voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112202181A true CN112202181A (en) | 2021-01-08 |
Family
ID=74006591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011017393.9A Pending CN112202181A (en) | 2020-09-24 | 2020-09-24 | Voltage-regulating and voltage-dividing ratio design method of hybrid full-compensation system based on fault phase residual voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112202181A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2188373A1 (en) * | 1996-08-15 | 1998-02-15 | Robert W. Beckwith | multifunction adaptive controls for tapswitches and capacitors |
| WO2015109551A1 (en) * | 2014-01-25 | 2015-07-30 | 孙崇山 | Transient impedance transformer based on ac voltage adjustment electronic switch |
| CN111106609A (en) * | 2020-02-06 | 2020-05-05 | 云南电网有限责任公司电力科学研究院 | Phase voltage drop calculation method for self-produced power supply |
| WO2020087811A1 (en) * | 2018-11-01 | 2020-05-07 | 杭州求创电力科技有限公司 | Method for suppressing fault phase residual voltage of resonant grounding system based on precise tuning control on active adjustable complex impedance |
| CN111293700A (en) * | 2020-02-06 | 2020-06-16 | 云南电网有限责任公司电力科学研究院 | Compensation adjustment method for self-generated power supply ground fault compensation system |
-
2020
- 2020-09-24 CN CN202011017393.9A patent/CN112202181A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2188373A1 (en) * | 1996-08-15 | 1998-02-15 | Robert W. Beckwith | multifunction adaptive controls for tapswitches and capacitors |
| WO2015109551A1 (en) * | 2014-01-25 | 2015-07-30 | 孙崇山 | Transient impedance transformer based on ac voltage adjustment electronic switch |
| WO2020087811A1 (en) * | 2018-11-01 | 2020-05-07 | 杭州求创电力科技有限公司 | Method for suppressing fault phase residual voltage of resonant grounding system based on precise tuning control on active adjustable complex impedance |
| CN111106609A (en) * | 2020-02-06 | 2020-05-05 | 云南电网有限责任公司电力科学研究院 | Phase voltage drop calculation method for self-produced power supply |
| CN111293700A (en) * | 2020-02-06 | 2020-06-16 | 云南电网有限责任公司电力科学研究院 | Compensation adjustment method for self-generated power supply ground fault compensation system |
Non-Patent Citations (1)
| Title |
|---|
| 潘晓娟;关静恩;张春丽;唐伟超;: "基于交-直-交电压柔性控制的接地故障全消弧技术分析研究", 云南电力技术, no. 04 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jung et al. | Voltage regulation method for voltage drop compensation and unbalance reduction in bipolar low-voltage DC distribution system | |
| CN109802419B (en) | Transient overvoltage evaluation and calculation method for receiving-end power grid of multi-direct-current feed-in system | |
| CN111262251B (en) | Analysis method for voltage drop of full compensation system | |
| CN110544929B (en) | Earth fault current compensation system and method for self-generating power phase power supply | |
| CN105207203B (en) | A kind of UHV transmission line highly resistance compensation method | |
| CN111193251B (en) | Analysis method for voltage sag of full-compensation system | |
| CN111293700A (en) | Compensation adjustment method for self-generated power supply ground fault compensation system | |
| Chandra et al. | Capacitor bank designing for power factor improvement | |
| CN111262250A (en) | Compensation adjustment method for self-generated power supply ground fault compensation system | |
| Yousaf et al. | A control strategy to mitigate the sensitivity deterioration of overcurrent protection in distribution networks with the higher concentration of the synchronous and inverter-based DG units | |
| CN110601206A (en) | Earth fault current compensation system and method for self-generating power phase power supply | |
| Mandi et al. | Power quality issues in electrical distribution system and industries | |
| CN110571779B (en) | Self-generating power supply type ground fault compensation system and fault line selection method | |
| CN112054531B (en) | Mixed full compensation system voltage regulating and dividing ratio design method based on fault phase residual voltage | |
| CN112202181A (en) | Voltage-regulating and voltage-dividing ratio design method of hybrid full-compensation system based on fault phase residual voltage | |
| CN111106609B (en) | Self-generated power supply phase voltage drop calculation method | |
| CN112202180B (en) | Full compensation system compensation transformer voltage division ratio design method based on fault phase residual voltage | |
| Eugeny et al. | HVDC LCC technology and power quality issues in cross-border electrical power transmission Russia—Finland | |
| CN112054534A (en) | Voltage division ratio design method of full-compensation system compensation transformer based on fault phase residual voltage | |
| Shinde et al. | Investigation of effects of solar photovoltaic penetration in an IEEE 13-bus radial low-voltage distribution feeder system | |
| Bhardwaj et al. | Installation of Automatically Controlled Compensation Banks | |
| CN109980632A (en) | Vehicle factor low-voltage distribution network electric energy quality limit of interference calculation method | |
| Bolduc et al. | Overhead-ground-wire power supply regulation by IVACE | |
| Samimi et al. | Reactor failure due to resonance in Zahedan-Iranshahr parallel EHV lines, analysis and practical solutions | |
| Hamer | Application of the duplex reactor-an unusual and forgotten technique to reduce short circuit duty |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |