CN107026453B - Network voltage control method and its control system - Google Patents
Network voltage control method and its control system Download PDFInfo
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- CN107026453B CN107026453B CN201710202911.6A CN201710202911A CN107026453B CN 107026453 B CN107026453 B CN 107026453B CN 201710202911 A CN201710202911 A CN 201710202911A CN 107026453 B CN107026453 B CN 107026453B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The invention discloses a kind of network voltage control methods, for controlling after the operation of 1000kV extra-high voltage system the voltage of 1000kV extra-high voltage system Zhong Ge substation near region 500kV bus, it comprises the steps of: under 1000kV extra-high voltage system normal operating mode and extra-high voltage element maintenance mode, the voltage fluctuation of 1000/500kV after failure is analyzed, each substation near region 500kV busbar voltage increasing degree value before and after failure is obtained；According to 500kV busbar voltage increasing degree value in substation near region each before and after failure, and combine each substation near region 500kV busbar voltage early warning upper limit value, 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage upper control limit value is obtained, is controlled using voltage of the voltage upper control limit value to corresponding substation near region 500kV bus.The invention also discloses a kind of network voltage control systems.The present invention can effectively improve the Reactive-power control ability of 1000kV extra-high voltage system, and 500kV network voltage is effectively controlled early warning upper limit value or less.
Description
Technical field
The present invention relates to power system voltage automatic control technology fields, and in particular to a kind of network voltage control method and
Its control system.
Background technique
1000kV ac bus power-frequency overvoltage tolerance is 1130kV, and the duration is 30 minutes.Extra-high voltage system
When operation, power transformation may be led to because cutting off main transformer and then losing low tension reactor or cut off due to route loses highly resistance in turn after failure
Busbar voltage of standing increases.And with the intensive feed-in of 500kV power grid high power DC, low-valley interval especially festivals or holidays low ebb when
Section need to mediate a large amount of units for cooperation peak regulation, weaken System Reactive Power regulating power, and busbar voltage increases after may cause accident
More than permissible level, it is therefore desirable to control busbar voltage.
Summary of the invention
The purpose of the present invention is to provide a kind of network voltage control method and its control systems, effectively improve 1000kV
500kV network voltage is effectively controlled early warning upper limit value or less by the Reactive-power control ability of extra-high voltage system.
In order to achieve the above object, the invention is realized by the following technical scheme: a kind of network voltage control method, special
Point is, to the electricity of 1000kV extra-high voltage system Zhong Ge substation near region 500kV bus after running for 1000kV extra-high voltage system
Voltage-controlled system, the network voltage control method comprise the steps of:
Under 1000kV extra-high voltage system normal operating mode, the voltage fluctuation of 1000/500kV after failure is analyzed,
Each substation near region 500kV busbar voltage increasing degree value in failure front and back in 1000kV extra-high voltage system under acquisition normal operating mode；
In 1000kV extra-high voltage system under extra-high voltage element maintenance mode, the voltage fluctuation of 1000/500kV after failure is analyzed,
Each substation near region 500kV busbar voltage increasing degree value in failure front and back in 1000kV extra-high voltage system under acquisition maintenance mode；
According to each substation near region 500kV bus is electric before and after failure in 1000kV extra-high voltage system under normal operating mode
Each substation near region 500kV busbar voltage increasing degree in failure front and back in 1000kV extra-high voltage system under pressure increasing degree value and maintenance mode
Value, and 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value is combined, it is special to obtain 1000kV
High-pressure system Zhong Ge substation near region 500kV busbar voltage upper control limit value, using each power transformation in the 1000kV extra-high voltage system
Near region 500kV busbar voltage upper control limit value of standing is to substation near region 500kV bus corresponding in 1000kV extra-high voltage system
Voltage is controlled.
Under the 1000kV extra-high voltage system normal operating mode, the voltage fluctuation of 1000/500kV after failure is carried out
It analyzes, each substation near region 500kV busbar voltage liter in failure front and back in 1000kV extra-high voltage system under acquisition normal operating mode
Include in amplitude:
Establish fault set；
To fault type each in fault set, determine its under 1000kV extra-high voltage system normal operating mode, it is right
The increasing degree value of each substation near region 500kV busbar voltage in failure front and back in 1000kV extra-high voltage system；
Determine failure front and back each substation near region 500kV busbar voltage biggest advance value institute in 1000kV extra-high voltage system
Corresponding fault type, and record substation's near region 500kV busbar voltage biggest advance value.
It include main transformer N-1 fault type, route N-1 fault type and route N-2 fault type in the fault set.
In the 1000kV extra-high voltage system under extra-high voltage element maintenance mode, to the electricity of 1000/500kV after failure
Pressure fluctuation is analyzed, each substation near region 500kV bus in failure front and back in 1000kV extra-high voltage system under acquisition maintenance mode
Include in voltage increasing degree value:
Establish fault set and extra-high voltage element maintenance mode collection；
To fault type each in fault set, determine that extra-high voltage element maintenance mode is concentrated under each maintenance type, it is right
The increasing degree value of each substation near region 500kV busbar voltage in failure front and back in 1000kV extra-high voltage system；
Determine failure front and back each substation near region 500kV busbar voltage biggest advance value institute in 1000kV extra-high voltage system
Corresponding fault type and maintenance type, and record substation's near region 500kV busbar voltage biggest advance value.
It include main transformer N-1 fault type, route N-1 fault type and route N-2 fault type in the fault set；
The extra-high voltage element maintenance mode collection includes that main transformer maintenance type, I line maintenance type and II line overhaul type.
The range of the 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value is
520kV~525kV.
It is described according to each substation near region 500kV is female before and after failure in 1000kV extra-high voltage system under normal operating mode
Each substation near region 500kV busbar voltage liter in failure front and back in 1000kV extra-high voltage system under line voltage increasing degree value and maintenance mode
Amplitude, and 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value is combined, it is special to obtain 1000kV
High-pressure system Zhong Ge substation near region 500kV busbar voltage upper control limit value, using each power transformation in the 1000kV extra-high voltage system
Near region 500kV busbar voltage upper control limit value of standing is to substation near region 500kV bus corresponding in 1000kV extra-high voltage system
Voltage controlled in include:
Step A, each substation near region 500kV before and after failure is determined under normal operating mode in 1000kV extra-high voltage system
The maximum value of busbar voltage increasing degree；
Step B, each substation near region 500kV bus before and after failure is determined under maintenance mode in 1000kV extra-high voltage system
The maximum value of voltage increasing degree；
Step C, the peak of selecting step A and substation near region 500kV busbar voltage increasing degree corresponding in step B；
Step D, 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value and step are walked
The peak of corresponding substation near region 500kV busbar voltage increasing degree makes the difference in rapid C, obtains corresponding substation near region 500kV
Busbar voltage upper control limit value；
Step E, using 500kV busbar voltage upper control limit value pair in each substation near region obtained in step step D
The voltage of corresponding substation near region 500kV bus is controlled in 1000kV extra-high voltage system.
A kind of network voltage control system, its main feature is that, include:
First data acquisition module, for obtaining under 1000kV extra-high voltage system normal operating mode, 1000kV extra-high voltage
Each substation near region 500kV busbar voltage increasing degree value before and after failure in system；
Second data acquisition module, for obtaining under 1000kV extra-high voltage system overhaul mode, 1000kV extra-high voltage system
Each substation near region 500kV busbar voltage increasing degree value before and after middle failure；
Data processor is connect with first data acquisition module and the second data acquisition module respectively, is used for root
According under normal operating mode in 1000kV extra-high voltage system before and after failure each substation near region 500kV busbar voltage increasing degree value and
Each substation near region 500kV busbar voltage increasing degree value in failure front and back in 1000kV extra-high voltage system under maintenance mode, and combine
1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value obtains in 1000kV extra-high voltage system
Each substation near region 500kV busbar voltage upper control limit value,
Execution module is controlled, is connect with the data processor, for according to each power transformation in 1000kV extra-high voltage system
Near region 500kV busbar voltage upper control limit value of standing is to substation near region 500kV bus corresponding in 1000kV extra-high voltage system
Voltage is controlled.
The data processor includes:
First data analysis module is connect with first data acquisition module, for according to 1000kV extra-high voltage system
Each substation near region 500kV busbar voltage increasing degree value before and after failure, obtains 1000kV extra-high voltage system under system normal operating mode
The maximum value of each substation near region 500kV busbar voltage increasing degree in failure front and back under normal operating mode；
Second data analysis module is connect with second data acquisition module, for according to 1000kV extra-high voltage system
Each substation near region 500kV busbar voltage increasing degree value before and after failure, obtains 1000kV extra-high voltage system overhaul under system maintenance mode
The maximum value of each substation near region 500kV busbar voltage increasing degree in failure front and back under mode；
Comparison module is connect with first data analysis module and the second data analysis module respectively, is used for basis
The maximum of each substation near region 500kV busbar voltage increasing degree in failure front and back under 1000kV extra-high voltage system normal operating mode
The maximum of value and each substation near region 500kV busbar voltage increasing degree before and after failure under 1000kV extra-high voltage system overhaul mode
Value, obtains the peak of corresponding substation near region 500kV busbar voltage increasing degree；
Memory module analyzes mould with first data acquisition module, the second data acquisition module, the first data respectively
Block, the second data analysis module and comparison module connection, for storing failure under 1000kV extra-high voltage system normal operating mode
Each power transformation before and after failure under each substation near region 500kV busbar voltage increasing degree value in front and back, 1000kV extra-high voltage system overhaul mode
Standing under near region 500kV busbar voltage increasing degree value, 1000kV extra-high voltage system normal operating mode, each substation is close before and after failure
The maximum value of area 500kV busbar voltage increasing degree obtains each substation in failure front and back under 1000kV extra-high voltage system overhaul mode
The maximum value and 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage of near region 500kV busbar voltage increasing degree are pre-
Alert upper limit value；
Difference seeks module, connect respectively with the comparison module and memory module, for close according to each substation
The peak of area 500kV busbar voltage increasing degree and corresponding substation near region 500kV busbar voltage early warning upper limit value, are corresponded to
Substation's near region 500kV busbar voltage upper control limit value, and by each substation near region 500kV busbar voltage upper control limit value
It stores to memory module；
The control execution module seeks module with the difference respectively and memory module is connect, for according to every
One substation's near region 500kV busbar voltage upper control limit value is to corresponding substation near region 500kV in 1000kV extra-high voltage system
The voltage of bus is controlled
The range of the 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value is
520kV~525kV.
A kind of network voltage control method of the present invention and its control system have the advantage that pass through compared with prior art
Voltage fluctuation under normal mode and maintenance mode is analyzed, corresponding substation near region 500kV busbar voltage liter is obtained
The peak of width, and 500kV busbar voltage early warning upper limit value is combined, 500kV busbar voltage is effectively controlled, it is special that body improves 1000kV
The Reactive-power control ability of high-pressure system.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of network voltage control system of the present invention；
Fig. 2 is a kind of flow chart of network voltage control method of the present invention.
Specific embodiment
The present invention is further elaborated by the way that a preferable specific embodiment is described in detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of network voltage control system, includes: the first data acquisition module 100, for obtaining
Under 1000kV extra-high voltage system normal operating mode, each substation near region 500kV is female before and after failure in 1000kV extra-high voltage system
Line voltage increasing degree value；Second data acquisition module 200, for obtaining under 1000kV extra-high voltage system overhaul mode, 1000kV is special
Each substation near region 500kV busbar voltage increasing degree value before and after failure in high-pressure system；Data processor 900 includes the first data point
Analysis module 300, the second data analysis module 400, comparison module 500, memory module 600 and difference seek module 700, wherein
First data analysis module 300 is connect with first data acquisition module 100, for according to 1000kV extra-high voltage system
Each substation near region 500kV busbar voltage increasing degree value before and after failure, is obtaining 1000kV extra-high voltage system just under normal operating mode
The maximum value of each substation near region 500kV busbar voltage increasing degree in failure front and back under the normal method of operation；Second data analysis module
400, it is connect with second data acquisition module 200, before according to failure under 1000kV extra-high voltage system overhaul mode
Hou Ge substation near region 500kV busbar voltage increasing degree value obtains each before and after failure under 1000kV extra-high voltage system overhaul mode
The maximum value of substation's near region 500kV busbar voltage increasing degree；Comparison module 500, respectively with first data analysis module
300 and second data analysis module 400 connect, for according under 1000kV extra-high voltage system normal operating mode before and after failure
It is every before and after failure under the maximum value and 1000kV extra-high voltage system overhaul mode of each substation near region 500kV busbar voltage increasing degree
The maximum value of one substation's near region 500kV busbar voltage increasing degree, obtains corresponding substation near region 500kV busbar voltage increasing degree
Peak；Memory module 600, respectively with first data acquisition module 100, the second data acquisition module 200, first
Data analysis module 300, the second data analysis module 400 and comparison module 500 connect, for storing 1000kV extra-high voltage system
Each substation near region 500kV busbar voltage increasing degree value in failure front and back, 1000kV extra-high voltage system overhaul under system normal operating mode
Under mode before and after failure under each substation near region 500kV busbar voltage increasing degree value, 1000kV extra-high voltage system normal operating mode
The maximum value of each substation near region 500kV busbar voltage increasing degree, acquisition 1000kV extra-high voltage system overhaul mode before and after failure
The maximum value of each substation near region 500kV busbar voltage increasing degree and 1000kV extra-high voltage system Zhong Ge substation before and after lower failure
Near region 500kV busbar voltage early warning upper limit value；Difference seeks module 700, respectively with the comparison module 500 and memory module
600 connections, for according to the peak of each substation near region 500kV busbar voltage increasing degree and corresponding substation near region
500kV busbar voltage early warning upper limit value obtains corresponding substation near region 500kV busbar voltage upper control limit value, and will be each
Substation's near region 500kV busbar voltage upper control limit value is stored to memory module 600；Control execution module 800, respectively with it is described
Difference seek module 700 and memory module 600 and connect, for being controlled according to each substation near region 500kV busbar voltage
Limit value controls the voltage of substation near region 500kV bus corresponding in 1000kV extra-high voltage system.
As shown in Fig. 2, a kind of network voltage control method, for extra-high to 1000kV after the operation of 1000kV extra-high voltage system
The voltage of pressure system Zhong Ge substation near region 500kV bus controls, which comprises the steps of:
Under S1,1000kV extra-high voltage system normal operating mode, the voltage fluctuation of 1000/500kV after failure is divided
It analyses, each substation near region 500kV busbar voltage increasing degree in failure front and back in 1000kV extra-high voltage system under acquisition normal operating mode
Value.
S1.1, fault set is established；
S1.2, to fault type each in fault set, determine its under 1000kV extra-high voltage system normal operating mode, it is right
The increasing degree value of each substation near region 500kV busbar voltage in failure front and back in 1000kV extra-high voltage system；
S1.3, determine that each substation near region 500kV busbar voltage most rises higher before and after failure in 1000kV extra-high voltage system
Fault type corresponding to amplitude, and record substation's near region 500kV busbar voltage biggest advance value.
In S2,1000kV extra-high voltage system under extra-high voltage element maintenance mode, to the voltage wave of 1000/500kV after failure
It is dynamic to be analyzed, each substation near region 500kV busbar voltage in failure front and back in 1000kV extra-high voltage system under acquisition maintenance mode
Increasing degree value.
S2.1, fault set and extra-high voltage element maintenance mode collection are established；
S2.2, to fault type each in fault set, determine that extra-high voltage element maintenance mode is concentrated under each maintenance type,
To the increasing degree value of each substation near region 500kV busbar voltage before and after failure in 1000kV extra-high voltage system；
S2.3, determine that each substation near region 500kV busbar voltage most rises higher before and after failure in 1000kV extra-high voltage system
Fault type corresponding to amplitude and maintenance type, and record substation's near region 500kV busbar voltage biggest advance value.
In the present invention, the sequence of step S1 and step S2 can be interchanged, it can first carry out 1000kV extra-high voltage system
Under middle extra-high voltage element maintenance mode, the voltage fluctuation of 1000/500kV after failure is analyzed, it is rear to carry out 1000kV extra-high voltage system
It unites under normal operating mode, the voltage fluctuation of 1000/500kV after failure is analyzed.
S3, according to each substation near region 500kV bus before and after failure in 1000kV extra-high voltage system under normal operating mode
Each substation near region 500kV busbar voltage increasing degree in failure front and back in 1000kV extra-high voltage system under voltage increasing degree value and maintenance mode
Value, and 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value is combined, it is special to obtain 1000kV
High-pressure system Zhong Ge substation near region 500kV busbar voltage upper control limit value, using each power transformation in the 1000kV extra-high voltage system
Near region 500kV busbar voltage upper control limit value of standing is to substation near region 500kV bus corresponding in 1000kV extra-high voltage system
Voltage is controlled.
S3.1, each substation near region 500kV before and after failure is determined under normal operating mode in 1000kV extra-high voltage system
The maximum value of busbar voltage increasing degree；
S3.2, each substation near region 500kV bus before and after failure is determined under maintenance mode in 1000kV extra-high voltage system
The maximum value of voltage increasing degree；
The highest of S3.3, selecting step S3.1 and substation near region 500kV busbar voltage increasing degree corresponding in step S3.2
Value；
S3.4, by 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value and step
The peak of corresponding substation near region 500kV busbar voltage increasing degree makes the difference in S3.3, obtains corresponding substation near region 500kV
Busbar voltage upper control limit value；
S3.5, using each substation near region 500kV busbar voltage upper control limit value obtained in step S3.4 to 1000kV
The voltage of corresponding substation near region 500kV bus is controlled in extra-high voltage system.
In one particular embodiment of the present invention, to Zhe Bei~Foochow ultra-high voltage AC input transformation engineering, (1000kV is special
High-pressure system) put into operation after the control of the voltage of East China Power Grid (500kV) is analyzed.1000kV Zhe Bei~Foochow exchanges work
Journey will create 3 station, 6 line, 6 main transformer, rise from Zhe Bei 1000kV substation, Jing Zhezhong 1000kV substation, the 1000kv power transformation of Zhejiang south
It stands, terminates in Foochow 1000kV substation, total line length is that (wherein common-tower double-return road line length is 2X to 2X597.9km
160km, single loop line length are 2X437.9km).Wherein Zhe Bei to Zhejiang middle section line length be 2X197.4km, to Zhejiang in Zhejiang
Southern section line length is 2X 121.5km, and Zhe Nan to Foochow section line length is 2X 279km.Route is by way of Zhejiang and Fujian two
It saves, wherein the domestic line length in Zhejiang is 2X 423.9km, and the domestic line length in Fujian is 2X174km.Foochow-Zhejiang south section is
Whole process is non-to joint use, remaining two sections are joint used for part (with bar ratio about 50%).
Calculation condition is assumed to voltage fluctuation meter first:
102,000,000 kilowatts of East China Power Grid the whole network load, 17,000,000 kilowatts of Zhejiang load, by 10,000,000 kilowatts of electricity；It send in Fujian
2,000,000 kilowatts out.
Zhejiang power grid 220kV substation high-pressure side power factor is set as 0.97,500kV initial voltage in 525~530kV
Between.
In Anji, Zhejiang, Zhe Nan, low anti-all investments in four station station of Foochow.
Because unit under-excitation ability according to test determine, the present invention in temporarily by following principle be arranged: power output up to 50% it is specified go out
The above person of power is controlled by power rate 0.99；Otherwise it is controlled by power rate 0.90；Nuclear power, pumped storage unit do not take into account phase.
The main unit that Zhejiang mediates are as follows: good two #6/8, northern logical sequence #4/5/6, Wu Shashan #4, Tongbai #2/3/4, day famine level ground #
5/6, win dragon #5, Yuhuan #2/3, Lanxi #2/3, Leqing #2/3, Cangnan #1 and part 220kV power grid unit.
The main unit that Fujian mediates are as follows: fine river #3/4, mouth of a river whole unit, rear stone #1/3 machine, Datang
Table 1 is arranged, it is known that cause 1000kV extra-high voltage system and its drop point near region busbar voltage increasing degree highest
Failure mode is as shown in table 2.
Cause extra-high voltage system and its highest failure mode of drop point near region busbar voltage increasing degree under 2 normal mode of table
Unit: kV
| Bus | Maximum voltage increasing degree | Failure mode |
| Anji 1050 | 8.3 | Anji main transformer N-1 |
| Anji 525 | 4.3 | Anji main transformer N-1 |
| 1050 in Zhejiang | 10.2 | Main transformer N-1 in Zhejiang |
| 525 in Zhejiang | 5.6 | Main transformer N-1 in Zhejiang |
| Zhejiang south 1050 | 12.0 | Zhejiang south main transformer N-1 |
| Zhejiang south 525 | 5.6 | Zhejiang south main transformer N-1 |
| Foochow 1050 | 10.7 | Foochow main transformer N-1 |
| Foochow 525 | 3.0 | Zhejiang south main transformer N-1 |
| Wonderful western 525 | 4.0 | Anji main transformer N-1 |
| Renhe 525 | 2.7 | Anji main transformer N-1 |
| Phoenix instrument 525 | 2.9 | Main transformer N-1 in Zhejiang |
| Double imperial 525 | 3.7 | Zhejiang south main transformer N-1 |
| Everything 525 | 5.3 | Zhejiang south main transformer N-1 |
| Ouhai 525 | 2.6 | Zhejiang south main transformer N-1 |
| Fine river 525 | 2.0 | Zhejiang south main transformer N-1 |
| 525 in large bamboo hat with a conical crown and broad brim | 2.6 | Zhejiang south main transformer N-1 |
As can be seen from Table 2, cause Anji, in Zhejiang, Zhejiang Nan Sanzhan extra-high voltage and its drop point near region 500kV busbar voltage
The maximum failure of increasing degree is our station extra-high voltage transformer tripping.And Foochow station is low anti-due to only having two groups, adjacent Zhejiang southern station is matched
Anti- 4 groups are set low, therefore the failure of Foochow station drop point near region 500kV busbar voltage highest increasing degree is caused to be Zhejiang southern station main transformer N-1.
Under all fault conditions, each busbar voltage increasing degree of 1000kV ultra-high voltage transformer station is between 8~12kV, near region
500kV busbar voltage increasing degree is between 2~6kV.
1000/500kV voltage fluctuation is analyzed after failure under extra-high voltage element maintenance mode:
Under extra-high voltage element maintenance mode, system pressure regulating ability is further weakened.Still consider above-mentioned fault set.Specifically
Each busbar voltage increasing degree calculated result is shown in Table 3 after failure.
Table 3 is arranged, it is known that cause extra-high voltage system and its highest maintenance/event of drop point near region busbar voltage increasing degree
Barrier form is as shown in table 4.
Cause extra-high voltage system and its highest maintenance of drop point near region busbar voltage increasing degree and its failure under 4 maintenance mode of table
Form
Unit: kV
| Bus | Maintenance mode | Failure | Maximum voltage increasing degree |
| Anji 1050 | Main transformer overhauls in Zhejiang | Anji main transformer N-1 | 9.0 |
| Anji 525 | II line overhauls in peace | Anji main transformer N-1 | 5.0 |
| 1050 in Zhejiang | II line overhauls in peace | Main transformer N-1 in Zhejiang | 11.8 |
| 525 in Zhejiang | I line overhauls in peace | Main transformer N-1 in Zhejiang | 6.4 |
| Zhejiang south 1050 | The maintenance of Foochow main transformer | Zhejiang south main transformer N-1 | 13.8 |
| Zhejiang south 525 | Southern good fortune I line maintenance | Zhejiang south main transformer N-1 | 6.3 |
| Foochow 1050 | The maintenance of Foochow main transformer | Foochow main transformer N-1 | 21.6 |
| Foochow 525 | The maintenance of Zhejiang south main transformer | Zhejiang south main transformer N-1 | 4.2 |
| Wonderful western 525 | II line overhauls in peace | Anji main transformer N-1 | 4.6 |
| Renhe 525 | II line overhauls in peace | Anji main transformer N-1 | 3.1 |
| Phoenix instrument 525 | I line overhauls in peace | Main transformer N-1 in Zhejiang | 3.3 |
| Double imperial 525 | I line overhauls in peace | Zhejiang south main transformer N-1 | 4.0 |
| Everything 525 | Southern good fortune II line maintenance | Zhejiang south main transformer N-1 | 5.9 |
| Ouhai 525 | Southern good fortune II line maintenance | Zhejiang south main transformer N-1 | 3.0 |
| Fine river 525 | The maintenance of Zhejiang south main transformer | Zhejiang south main transformer N-1 | 3.7 |
| 525 in large bamboo hat with a conical crown and broad brim | The maintenance of Zhejiang south main transformer | Zhejiang south main transformer N-1 | 3.8 |
As can be seen from Table 4, cause Anji, in Zhejiang, Zhejiang Nan Sanzhan extra-high voltage and its drop point near region 500kV busbar voltage
The maximum maintenance of increasing degree is that our station extra-high voltage list returns back out line maintenance,
Failure is our station extra-high voltage transformer tripping.And Foochow station is low anti-due to only having two groups, adjacent Zhejiang southern station configuration
It is low 4 groups anti-, therefore cause the maintenance form of Foochow station drop point near region 500kV busbar voltage highest increasing degree for the maintenance of Zhejiang south main transformer, therefore
Barrier is Zhejiang southern station main transformer N-1.
Under all maintenance modes and its fault condition, in Anji, Zhejiang, Zhejiang Nan Sanzhan extra-high voltage busbar voltage increasing degree is 9
Between~14kV, and if the remaining main transformer N-1 of generation, extra-high voltage bus are equivalent to by route sky under Foochow station owner change maintenance mode
It fills, voltage increasing degree reaches 21.6kV.Each station near region 500kV busbar voltage increasing degree is between 3~7kV.
It controls and requires according to the current voltage of East China Power Grid, Zhejiang 500kV voltage upper control limit is in 515~520kV, in advance
The alert upper limit is in 520~525kV.According to the analysis of front, in Anji, Zhejiang, Zhe Nan, Foochow side 500kV voltage highest increasing degree difference
For 5kV, 6.4kV, 6.3kV, 4.2kV.In conjunction with the current 500kV voltage early warning upper limit value in each extra-high voltage station drop point near region, deduct
Maximum voltage increasing degree obtains drop point near region 500kV voltage upper control limit value after extra-high voltage operation, as shown in table 5.
Drop point near region 500kV voltage upper control limit value after 5 extra-high voltage of table is gone into operation
Unit: kV
Note: the Fujian Electric Power Network voltage early warning upper limit temporarily presses 530kV consideration.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a kind of network voltage control method, which is characterized in that for extra-high to 1000kV after the operation of 1000kV extra-high voltage system
The voltage of pressure system Zhong Ge substation near region 500kV bus controls, which comprises the steps of:
Under 1000kV extra-high voltage system normal operating mode, to 1000kV extra-high voltage system Zhong Ge substation near region after failure
The voltage fluctuation of 500kV bus is analyzed, and each before and after failure in 1000kV extra-high voltage system under normal operating mode become is obtained
Power station near region 500kV busbar voltage increasing degree value；In 1000kV extra-high voltage system under extra-high voltage element maintenance mode, after failure
The voltage fluctuation of 1000kV extra-high voltage system Zhong Ge substation near region 500kV bus is analyzed, and is obtained under maintenance mode
Each substation near region 500kV busbar voltage increasing degree value before and after failure in 1000kV extra-high voltage system；
According to each substation near region 500kV busbar voltage increasing degree before and after failure in 1000kV extra-high voltage system under normal operating mode
Each substation near region 500kV busbar voltage increasing degree value in failure front and back in 1000kV extra-high voltage system under value and maintenance mode, and tie
1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value is closed, 1000kV extra-high voltage system is obtained
Zhong Ge substation near region 500kV busbar voltage upper control limit value, using the 1000kV extra-high voltage system Zhong Ge substation near region
500kV busbar voltage upper control limit value to the voltage of substation near region 500kV bus corresponding in 1000kV extra-high voltage system into
Row control includes:
Step A, each substation near region 500kV bus before and after failure is determined under normal operating mode in 1000kV extra-high voltage system
The maximum value of voltage increasing degree；
Step B, each substation near region 500kV busbar voltage before and after failure is determined under maintenance mode in 1000kV extra-high voltage system
The maximum value of increasing degree；
Step C, the peak of selecting step A and substation near region 500kV busbar voltage increasing degree corresponding in step B；
Step D, by 1000kV extra-high voltage system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value with it is right in step C
The peak for the substation's near region 500kV busbar voltage increasing degree answered makes the difference, and obtains corresponding substation near region 500kV busbar voltage
Upper control limit value；
Step E, using each substation near region 500kV busbar voltage upper control limit value obtained in step D to 1000kV extra-high voltage
The voltage of corresponding substation near region 500kV bus is controlled in system.
2. network voltage control method as described in claim 1, which is characterized in that the 1000kV extra-high voltage system is normal
Under the method for operation, the voltage fluctuation of 1000kV extra-high voltage system Zhong Ge substation near region 500kV bus after failure is analyzed,
Under acquisition normal operating mode in 1000kV extra-high voltage system in each substation near region 500kV busbar voltage increasing degree value in failure front and back
Include:
Establish fault set；
To fault type each in fault set, it is determined under 1000kV extra-high voltage system normal operating mode, to 1000kV spy
The increasing degree value of each substation near region 500kV busbar voltage in failure front and back in high-pressure system；
It determines in 1000kV extra-high voltage system corresponding to each substation near region 500kV busbar voltage biggest advance value in failure front and back
Fault type, and record substation's near region 500kV busbar voltage biggest advance value.
3. network voltage control method as claimed in claim 2, which is characterized in that include main transformer N-1 in the fault set
Fault type, route N-1 fault type and route N-2 fault type.
4. network voltage control method as described in claim 1, which is characterized in that special in the 1000kV extra-high voltage system
Voltage fluctuation under high voltage device maintenance mode, to 1000kV extra-high voltage system Zhong Ge substation near region 500kV bus after failure
It is analyzed, each substation near region 500kV busbar voltage liter in failure front and back in 1000kV extra-high voltage system under acquisition maintenance mode
Include in amplitude:
Establish fault set and extra-high voltage element maintenance mode collection；
To fault type each in fault set, determine that extra-high voltage element maintenance mode is concentrated under each maintenance type, to 1000kV
The increasing degree value of each substation near region 500kV busbar voltage in failure front and back in extra-high voltage system；
It determines in 1000kV extra-high voltage system corresponding to each substation near region 500kV busbar voltage biggest advance value in failure front and back
Fault type and maintenance type, and record substation's near region 500kV busbar voltage biggest advance value.
5. network voltage control method as claimed in claim 4, which is characterized in that include main transformer N-1 in the fault set
Fault type, route N-1 fault type and route N-2 fault type；The extra-high voltage element maintenance mode collection includes main transformer
It overhauls type, I line maintenance type and II line and overhauls type.
6. network voltage control method as described in claim 1, which is characterized in that each in the 1000kV extra-high voltage system
The range of substation's near region 500kV busbar voltage early warning upper limit value is 520kV~525kV.
7. a kind of network voltage control system, characterized by comprising:
First data acquisition module, for obtaining under 1000kV extra-high voltage system normal operating mode, 1000kV extra-high voltage system
Each substation near region 500kV busbar voltage increasing degree value before and after middle failure；
Second data acquisition module, for obtaining under 1000kV extra-high voltage system overhaul mode, event in 1000kV extra-high voltage system
Each substation near region 500kV busbar voltage increasing degree value in barrier front and back；
Data processor is connect with first data acquisition module and the second data acquisition module respectively, for according to just
Each substation near region 500kV busbar voltage increasing degree value and maintenance side before and after failure in 1000kV extra-high voltage system under the normal method of operation
Each substation near region 500kV busbar voltage increasing degree value in failure front and back in 1000kV extra-high voltage system under formula, and combine 1000kV special
High-pressure system Zhong Ge substation near region 500kV busbar voltage early warning upper limit value obtains 1000kV extra-high voltage system Zhong Ge substation
Near region 500kV busbar voltage upper control limit value,
Execution module is controlled, is connect with the data processor, for close according to 1000kV extra-high voltage system Zhong Ge substation
Voltage of the 500kV busbar voltage upper control limit value in area to substation near region 500kV bus corresponding in 1000kV extra-high voltage system
It is controlled；
The data processor includes:
First data analysis module is connect with first data acquisition module, is used for according to 1000kV extra-high voltage system just
Each substation near region 500kV busbar voltage increasing degree value before and after failure, it is normal to obtain 1000kV extra-high voltage system under the normal method of operation
The maximum value of each substation near region 500kV busbar voltage increasing degree in failure front and back under the method for operation；
Second data analysis module is connect with second data acquisition module, for being examined according to 1000kV extra-high voltage system
Each substation near region 500kV busbar voltage increasing degree value in failure front and back under mode is repaired, 1000kV extra-high voltage system overhaul mode is obtained
The maximum value of each substation near region 500kV busbar voltage increasing degree before and after lower failure；
Comparison module is connect with first data analysis module and the second data analysis module respectively, is used for basis
The maximum value of each substation near region 500kV busbar voltage increasing degree in failure front and back under 1000kV extra-high voltage system normal operating mode
With under 1000kV extra-high voltage system overhaul mode before and after failure each substation near region 500kV busbar voltage increasing degree maximum value,
Obtain the peak of corresponding substation near region 500kV busbar voltage increasing degree；
Memory module, respectively with first data acquisition module, the second data acquisition module, the first data analysis module,
Second data analysis module and comparison module connection, for storing under 1000kV extra-high voltage system normal operating mode before and after failure
Each substation is close before and after failure under each substation near region 500kV busbar voltage increasing degree value, 1000kV extra-high voltage system overhaul mode
Each substation near region before and after failure under area 500kV busbar voltage increasing degree value, 1000kV extra-high voltage system normal operating mode
The maximum value of 500kV busbar voltage increasing degree obtains under 1000kV extra-high voltage system overhaul mode that each substation is close before and after failure
The maximum value and the near region 500kV busbar voltage early warning of 1000kV extra-high voltage system Zhong Ge substation of area 500kV busbar voltage increasing degree
Upper limit value；
Difference seeks module, connect respectively with the comparison module and memory module, for according to each substation near region
The peak of 500kV busbar voltage increasing degree and corresponding substation near region 500kV busbar voltage early warning upper limit value obtain corresponding
Substation's near region 500kV busbar voltage upper control limit value, and each substation near region 500kV busbar voltage upper control limit value is deposited
It stores up to memory module；
The control execution module seeks module with the difference respectively and memory module is connect, for according to each change
Power station near region 500kV busbar voltage upper control limit value is to substation near region 500kV bus corresponding in 1000kV extra-high voltage system
Voltage controlled.
8. network voltage control system as claimed in claim 7, which is characterized in that each in the 1000kV extra-high voltage system
The range of substation's near region 500kV busbar voltage early warning upper limit value is 520kV~525kV.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049646A (en) * | 2012-11-28 | 2013-04-17 | 广东电网公司电力科学研究院 | Comprehensive risk assessment method for power grid 500kV terminal substation construction |
| CN103972897A (en) * | 2014-05-29 | 2014-08-06 | 国家电网公司 | Method for determining control range of operation voltage of 500kV bus of extra-high voltage alternating-current transformer substation |
| CN106327034A (en) * | 2015-06-18 | 2017-01-11 | 中国电力科学研究院 | Cascading failure search and weak link analysis method based on operation reliability model |
| CN106410812A (en) * | 2016-08-30 | 2017-02-15 | 上海交通大学 | Network voltage out-of-limit adjusting method for use after access of ultrahigh voltage |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049646A (en) * | 2012-11-28 | 2013-04-17 | 广东电网公司电力科学研究院 | Comprehensive risk assessment method for power grid 500kV terminal substation construction |
| CN103972897A (en) * | 2014-05-29 | 2014-08-06 | 国家电网公司 | Method for determining control range of operation voltage of 500kV bus of extra-high voltage alternating-current transformer substation |
| CN106327034A (en) * | 2015-06-18 | 2017-01-11 | 中国电力科学研究院 | Cascading failure search and weak link analysis method based on operation reliability model |
| CN106410812A (en) * | 2016-08-30 | 2017-02-15 | 上海交通大学 | Network voltage out-of-limit adjusting method for use after access of ultrahigh voltage |
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