CN105826941B - A kind of control method for D.C. high voltage transmission receiving end black starting-up - Google Patents
A kind of control method for D.C. high voltage transmission receiving end black starting-up Download PDFInfo
- Publication number
- CN105826941B CN105826941B CN201610282025.4A CN201610282025A CN105826941B CN 105826941 B CN105826941 B CN 105826941B CN 201610282025 A CN201610282025 A CN 201610282025A CN 105826941 B CN105826941 B CN 105826941B
- Authority
- CN
- China
- Prior art keywords
- control
- additional frequency
- pattern
- controller
- frequency controller
- 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.)
- Active
Links
Classifications
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Landscapes
- Inverter Devices (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
Abstract
The invention discloses a kind of control methods for D.C. high voltage transmission receiving end black starting-up, comprise the following steps：The control of D.C. high voltage transmission rectification side increases constant DC voltage control pattern；The control of D.C. high voltage transmission inverter side is based on original inverter side Given current controller pattern, blow-out angle mould formula is determined as limiter using original, constant DC voltage control pattern is increased newly with reference to rectification side, realizes straight-flow system rectification side constant voltage, the control model of inverter side constant current；Additional frequency controller is increased based on original inverter side Given current controller pattern；Additional frequency controller is designed, additional frequency controller is configured by pole-assignment so that it provides system positive damping, and additional frequency controller design is first-order lead delay component.Algorithm for power modulation end is set in inverter side by the present invention, and increases additional frequency controller in inverter side, realizes and FREQUENCY CONTROL strategy is locally-attached during black starting-up, improve system stability.
Description
Technical field
It is more particularly to a kind of to be opened for D.C. high voltage transmission receiving end to be black the present invention relates to D.C. high voltage transmission black starting-up field
Dynamic control method.
Background technology
After black starting-up refers to that whole system is stopped transport because of failure, independent of the help of other networks, by having in system
Self-startup ability unit drives the unit of non self starting, and gradually expands the scope that system is recovered, final to realize entire system
The recovery of system.Traditional power grid"black-start" mode, general fuel oil consump-tion, the Hydropower Unit using this area with self-startup ability
As black starting-up power supply, progressively start other large-scale conventional power generation usage units.Power system restoration is driven using ac transmission mode, is had
Start the problems such as speed is slow, subsidiary engine startup impact is big, influence the speed of load restoration power supply during black starting-up.
Direct current transportation has many advantages, such as that transmission power is big, start and speed governing is fast, controllability is strong, and these features are in black starting-up
Initial stage can play larger effect.Particularly black starting-up when using HVDC supplementary control strategy can to AC system frequency, have
Work(etc. is modulated, and improves receiving-end system stability.Traditional DC additional controller is generally installed at DC rectifier side, and utilization is whole
It flows side Given current controller pattern and improves system stability, choosing the existing local signal of control signal also has distal end wide area signal.But
During receiving end power grid"black-start", receiving end active power is modulated using rectification side and inevitably faces signal delay
And the communication issues such as packet loss, it is unfavorable for the fast quick-recovery of receiving end power grid.Therefore, how to be utilized during receiving end power grid"black-start"
The additional modulation function of direct current transportation, give full play to customary DC transmission of electricity transmission capacity, governing speed etc. advantage into
For urgent problem to be solved.
The content of the invention
The problem to be solved by this invention that connects is to provide a kind of control method for D.C. high voltage transmission receiving end black starting-up,
Increase rectification side constant voltage, inverter side Given current controller pattern on original hvdc control mode, algorithm for power modulation end is set in
Inverter side, and increase additional frequency controller in inverter side so that black starting-up speed is fast, system is recovered to stablize.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of control method for D.C. high voltage transmission receiving end black starting-up comprises the following steps：
Step 1 controls increase constant DC voltage control pattern in D.C. high voltage transmission rectification side, i.e., described to determine DC voltage
Control model uses PI controllers, and the difference to measure voltage and reference voltage, using Trigger Angle as output, is exported as input
Trigger Angle takes higher value as output compared with the Trigger Angle output of original rectification side Given current controller；
Step 2, the control of D.C. high voltage transmission inverter side determine blow-out angle mould formula based on original Given current controller pattern with original
As limiter, i.e., constant DC current control pattern uses PI controllers, to measure the difference of electric current and reference current as defeated
Enter, using Trigger Angle as output, output Trigger Angle takes higher value conduct compared with determining the Trigger Angle of gamma kick and exporting
Output；The inverter side Given current controller pattern combination rectification side increases constant DC voltage control pattern and determines so as to form rectification side
Voltage inverter side Given current controller pattern；
Step 3 increases additional frequency controller, additional frequency control with inverter side change of current busbar frequency measurement with
The difference of 50Hz fundamental frequencies as output and is superimposed to original Given current controller circuit as input using current control amount；
Step 4 is designed additional frequency controller, special to system using least square-invariable rotary identification technique
Property recognized, draw system poles and zeros assignment situation, then pass through pole-assignment and configure system zero pole point, lifting system resistance
Buddhist nun forms additional frequency controller so that it provides positive damping to system.
According to said program, the additional frequency controller is arranged to single order or second order lead-lag link, wherein, single order
Additional frequency controller isWherein K is additional frequency controller transfer function, and s is multifrequency domain variable.
Compared with prior art, the beneficial effects of the invention are as follows：Receiving end is improved using the fast modulation function of direct current transportation
The stability of power grid, to realize that it is a kind of with weight that the fast quick-recovery of power grid after massive blackout provides with direct current drop point power grid
Want the new technology of practical value.FREQUENCY CONTROL, which is locally-attached, can not only greatly improve receiving-end system frequency wave phenomenon, and keep away
Exempt from telecommunication, improve the reliability of control strategy.The dc power that the present invention is suitable for black starting-up process is promoted, to weak
The algorithm for power modulation of D.C. high voltage transmission can also provide technical guarantee under receiving end AC system, have important promotional value.
Description of the drawings
Fig. 1 is the simulation model structure diagram used in specific example of the present invention.
Fig. 2 is rectification side control model schematic diagram in the present invention.
DC operation characteristic schematic diagram when Fig. 3 is rectification side constant voltage of the present invention, inverter side constant current.
Fig. 4 is inverter side additional frequency control schematic diagram in the present invention.
Fig. 5 be in the present invention inverter side additional frequency control before and after system frequency comparison diagram.
Fig. 6 is that system dc sends active power comparison diagram outside before and after the control of inverter side additional frequency in the present invention.
Fig. 7 be in the present invention inverter side additional frequency control before and after DC consumption reactive power comparison diagram.
Fig. 8 be in the present invention inverter side additional frequency control before and after system voltage comparison diagram.
Specific embodiment
Invention is described in further detail with reference to the accompanying drawings and detailed description, a kind of use provided by the invention
In the control method of D.C. high voltage transmission receiving end black starting-up, comprise the following steps：
Step 1 controls increase constant DC voltage control pattern in D.C. high voltage transmission rectification side, i.e., described to determine DC voltage
Control model uses PI controllers, and the difference to measure voltage and reference voltage, using Trigger Angle as output, is exported as input
Trigger Angle takes higher value as output compared with the Trigger Angle output of original rectification side Given current controller.
Step 2, the control of D.C. high voltage transmission inverter side determine blow-out angle mould formula based on original Given current controller pattern with original
As limiter, i.e., constant DC current control pattern uses PI controllers, to measure the difference of electric current and reference current as defeated
Enter, using Trigger Angle as output, output Trigger Angle takes higher value conduct compared with determining the Trigger Angle of gamma kick and exporting
Output；The inverter side Given current controller pattern combination rectification side increases constant DC voltage control pattern and determines so as to form rectification side
Voltage inverter side Given current controller pattern.
Step 3 increases additional frequency controller, additional frequency control with inverter side change of current busbar frequency measurement with
The difference of 50Hz fundamental frequencies as output and is superimposed to original Given current controller circuit as input using current control amount.
Step 4 is designed additional frequency controller, special to system using least square-invariable rotary identification technique
Property recognized, draw system poles and zeros assignment situation, then pass through pole-assignment and configure system zero pole point, lifting system resistance
Buddhist nun forms additional frequency controller so that it provides positive damping to system.
Specifically, the additional frequency controller is arranged to first-order lead delay component, additional frequency controller isWherein K is additional frequency controller transfer function, and s is multifrequency domain variable.
Below by specific example application, the present invention will be described.As shown in Figure 1, simulation model is mainly equivalent by sending end
Machine, imperial political affairs direct current, preferably assist unit and load structure at receiving end Yixing pump-storage generator.The check-ins such as sending end are in black starting-up system
The 500kV equivalent power supplies of 6125MVA capacities of short circuit；Imperial political affairs direct current is bipolar 12 pulse wave, ± 500kV rated voltages, the specified electricity of 3kA
Stream, 3000MW rated power；Yixing pump-storage generator is made of 4 250MW units comprising excitation and governing system；Preferably assist
Unit is made of the fired power generating unit of 3 170MW, wherein station service is preferably assisted to be simulated using asynchronous motor.
The control of D.C. high voltage transmission rectification side increases constant DC voltage control pattern, as shown in Figure 2.D.C. high voltage transmission is inverse
Become side control based on original inverter side Given current controller pattern, and to determine blow-out angle mould formula as limiter, so as to fulfill direct current
System rectification side constant voltage, the control model of inverter side constant current；Direct current VI operation characteristics are as shown in Figure 3 at this time.Utilize inversion
Side constant current mode increases additional frequency controller, as shown in figure 4, wherein input signal uses inverter side change of current busbar difference on the frequency
To realize local control.
System operation conditions are set as that receiving end Yixing pumped storage system opens a machine, and band 200MW burdens with power and 50MW are idle
Load, AC circuit breaker closes a floodgate within the 1.5th second, the 3rd second direct current, establishes power after direct current unlock in the 0.5th second, 3s direct currents are with 70%
Decompression, the unlock of 5% minimum current pattern, after dc power is established within the 3.7th second, one group of input 200Mvar capacity wave filter, simultaneously
Input 50Mvar reactors, which stabilize voltage fluctuation and put into additional frequency controller, inhibits frequency fluctuation, the 25th second input Yi Xie factory
Electricity consumption increases load on the 30th second again, until stopping within 130 seconds emulating.System frequency, direct current send active, generator outside and send nothing outside
Work(and system voltage are respectively as shown in Fig. 5, Fig. 6, Fig. 7 and Fig. 8.
From simulation result, after the control of inverter side additional frequency is put into, system frequency stability is largely increased, together
When dc power be modulated with system requirements, demonstrate and FREQUENCY CONTROL strategy validity be locally-attached, on the other hand, due to
The promotion of system frequency stability, system overvoltage and voltage stability are also accordingly improved, and demonstrate the effective of the strategy
Property.
Claims (2)
1. a kind of control method for D.C. high voltage transmission receiving end black starting-up, which is characterized in that comprise the following steps：
Step 1 controls increase constant DC voltage control pattern, i.e., described constant DC voltage control in D.C. high voltage transmission rectification side
Pattern uses PI controllers, and the difference to measure voltage and reference voltage, using Trigger Angle as output, exports triggering as input
Angle takes higher value as output compared with the Trigger Angle output of original rectification side Given current controller；
Step 2, the control of D.C. high voltage transmission inverter side based on original Given current controller pattern, using it is original determine blow-out angle mould formula as
Limiter, i.e. Given current controller pattern use PI controllers, to measure the difference of electric current and reference current as input, to trigger
Angle takes higher value as output as output, output Trigger Angle compared with determining the Trigger Angle of gamma kick and exporting；It is described
Inverter side Given current controller pattern combination rectification side increases constant DC voltage control pattern so as to form rectification side constant voltage inversion
Side Given current controller pattern；
Step 3, increase additional frequency controller, the additional frequency controller with inverter side change of current busbar frequency measurement with
The difference of 50Hz fundamental frequencies as output and is superimposed to original Given current controller circuit as input using current control amount；
Step 4 is designed additional frequency controller, using least square-invariable rotary identification technique to system performance into
Row identification draws system poles and zeros assignment situation, then configures system zero pole point by pole-assignment, and lifting system damps,
Form additional frequency controller so that it provides positive damping to system.
2. the as described in claim a kind of control method for being used for D.C. high voltage transmission receiving end black starting-up, which is characterized in that described
Additional frequency controller is arranged to first-order lead delay component, and additional frequency controller isWherein K is attached
Add frequency controller transmission function, s is multifrequency domain variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282025.4A CN105826941B (en) | 2016-04-29 | 2016-04-29 | A kind of control method for D.C. high voltage transmission receiving end black starting-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282025.4A CN105826941B (en) | 2016-04-29 | 2016-04-29 | A kind of control method for D.C. high voltage transmission receiving end black starting-up |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105826941A CN105826941A (en) | 2016-08-03 |
| CN105826941B true CN105826941B (en) | 2018-06-05 |
Family
ID=56527854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610282025.4A Active CN105826941B (en) | 2016-04-29 | 2016-04-29 | A kind of control method for D.C. high voltage transmission receiving end black starting-up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105826941B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108388235B (en) * | 2018-04-10 | 2020-10-16 | 南京南瑞继保电气有限公司 | Method for testing dynamic performance of high-voltage/extra-high-voltage direct-current control system |
| CN110365048B (en) * | 2019-07-19 | 2022-11-29 | 昆明理工大学 | Black-start net rack dynamic stability assessment method based on optimized trend |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035214A (en) * | 2010-12-15 | 2011-04-27 | 山东大学 | System operating mode selecting method in process of restoring direct current support weak receiving system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3277138B2 (en) * | 1997-03-07 | 2002-04-22 | 株式会社東芝 | Power converter |
-
2016
- 2016-04-29 CN CN201610282025.4A patent/CN105826941B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035214A (en) * | 2010-12-15 | 2011-04-27 | 山东大学 | System operating mode selecting method in process of restoring direct current support weak receiving system |
Non-Patent Citations (1)
| Title |
|---|
| 无站间通信下的高压直流输电系统逆变侧频率控制方法;李林等;《电力系统自动化》;20151125;第39卷(第22期);第131-135页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105826941A (en) | 2016-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Erlich et al. | Modeling of wind turbines based on doubly-fed induction generators for power system stability studies | |
| CN103078349B (en) | A kind of double-fed wind power generator system and low voltage traversing control method | |
| CN104113077A (en) | Coordination control method for double-fed asynchronous wind driven generator high voltage ride through | |
| CN103701148A (en) | Starting control method for large-size wind power plant access VSC-MTDC (voltage source converter based multi-terminal direct-current transmission) system | |
| CN106066944A (en) | Dual feedback wind power generation system short-circuit current calculation method under low voltage crossing | |
| CN104283207A (en) | Raising-voltage-from-zero starting method for wind farm to be connected to flexible direct-current power transmission system | |
| CN106026122A (en) | Integrated asynchronous excitation phase modifier and reactive compensation and active balance method thereof | |
| CN105140963A (en) | Doubly-fed wind generator system based on fault current-limiting control and low voltage ride through method | |
| CN103441530A (en) | Wind power generating device group high and low voltage crossing device, system and method | |
| CN103701147B (en) | Based on the double-fed unit fault ride-through method of rotor crosstalk resistance | |
| CN105826941B (en) | A kind of control method for D.C. high voltage transmission receiving end black starting-up | |
| CN106026177B (en) | The power grid"black-start" method of electricity generation system is stored up based on light | |
| CN205509501U (en) | Transient state energy dissipation device | |
| Fang et al. | Analysis of the influence of large-scale integration of centralized energy storage into the power grid on voltage security and stability of power system | |
| Jin et al. | Optimal power distribution method for wind farms to enhance the FRT capability of the LCC-HVDC system under commutation failure | |
| CN106443135A (en) | Hybrid wind power plant output power frequency short-circuit current calculation method | |
| CN107732969A (en) | Consider the double-fed fan motor unit short-circuit current calculation method of low voltage crossing overall process | |
| CN111130331B (en) | Overvoltage suppression control method for flexible direct-current transmission wind power grid-connected converter | |
| Shah et al. | Impedance-based prediction of SSR-generated harmonics in doubly-fed induction generators | |
| CN107658905A (en) | A kind of fault ride-through of power grid system and method based on double-fed fan motor field | |
| Dong et al. | Low voltage ride through capability enhancement of PMSG-based wind turbine | |
| CN203445627U (en) | Wind power generator set high and low voltage ride through device and system thereof | |
| CN203630230U (en) | Simulation test system in flexible direct current system and wind farm parallel connection mode | |
| CN106936154A (en) | Start method for the grid-connected series-parallel connection direct current network of extensive remote offshore wind farm | |
| CN206559058U (en) | A kind of grid-connected Large Copacity energy-accumulating power station of synchronized motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |