CN105720589A - Reactive power control method and system of convertor station - Google Patents
Reactive power control method and system of convertor station Download PDFInfo
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- CN105720589A CN105720589A CN201610211859.6A CN201610211859A CN105720589A CN 105720589 A CN105720589 A CN 105720589A CN 201610211859 A CN201610211859 A CN 201610211859A CN 105720589 A CN105720589 A CN 105720589A
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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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
Abstract
The invention relates to a reactive power control method and system of a convertor station, and a high voltage direct current transmission system; wherein the method comprises following steps of collecting the total reactive power value provided by an alternating current filer put into the convertor station; obtaining the preset exchanging reactive power expected value of the convertor station and an alternating current system; summing the total reactive power value and the reactive power expected value, thus obtaining the reactive power instruction value consumed by a converter in the converter station; according to the reactive power instruction value and the preset direct current power instruction value of the converter station, obtaining the direct current voltage instruction value of the converter station; according to the direct current voltage instruction value and the direct current power instruction value, obtaining the direct current instruction value of the converter station; and controlling the converter station according to the direct current voltage instruction value and the direct current instruction value. Through adoption of the scheme provided by the invention, the transmitted active power is kept unchanged; moreover, the exchanging reactive power of the convertor station and the alternating current system is controlled; and the dynamic reactive power adjusting capability of the convertor is exerted fully.
Description
Technical field
The present invention relates to technical field of HVDC transmission, particularly relate to a kind of current conversion station reactive power control method and system.
Background technology
D.C. high voltage transmission (HVDC, HighVoltageDirectCurrentTransmission) owing to transmission capacity is big and loss is little, power adjustments flexibility and reliability, the stable problem being absent from synchronous operation, the advantage such as the asynchronous networking that can realize between power system, in the transmission of electricity of remote high-capacity direct current, back-to-back DC networking, the transmission of electricity of gorge over strait direct current submarine cable, ac and dc systems series-parallel connection etc., be obtained for extensive use.
Owing to inverter is non-linear element, thus inverter needs to consume a large amount of reactive power in running, is about the 40%～60% of dc power.Thus current conversion station all configures Reactive Power Control function, adjusted the input capacity of reactive-load compensation equipment by switching alternating current filter, the reactive power exchange amount between ac and dc systems is controlled within the specific limits, or by ac bus Control of Voltage within the specific limits.Current conversion station consumes the size of reactive power, has relation with system control mode, direct current transmission power, DC voltage, DC current, angle of overlap and commutating reactance.In the idle control of HVDC transmission system, commonly use and be stepped up direct current transportation active power, determine reactive power compensator Switching Strategy according to the change of reactive power numerical value.
It addition, when direct current transmission power level is relatively low, due to the restriction by current conversion station alternating current filter equipment performance and access point harmonic performance, the alternating current filter capacity of input is likely to the reactive power consumption amount much larger than inverter, will produce a large amount of idle residue.For this, Partial DC power transmission engineering is configured with for the idle control function under direct current underload, directly increases the Trigger Angle of inverter according to default operating mode, increase the reactive power consumption of inverter, reach to reduce the purpose of ac and dc systems reactive power exchange.
The method of the current conversion station Reactive Power Control of existing HVDC transmission system is based entirely on calculated off line data and implements, the adjustment of the reactive power exchange amount between current conversion station and AC system is static state, has level to regulate, it does not have makes full use of the idle dynamic regulating power of inverter.
Summary of the invention
The purpose of invention is in that to provide a kind of current conversion station reactive power control method and system, it is possible to give full play to the idle dynamic regulating power of inverter.
The purpose of the present invention is achieved through the following technical solutions:
A kind of current conversion station reactive power control method, including:
Gather total reactive power value that the alternating current filter put in current conversion station provides, and obtain the described current conversion station preset and the reactive power expected value of AC system exchange；
The reactive power command value that the inverter obtaining in described current conversion station that described total reactive power value and described reactive power expected value are sued for peace consumes；
Dc power command value according to described reactive power command value and default described current conversion station obtains the DC voltage command value of described current conversion station；
The DC current command value of described current conversion station is obtained according to described DC voltage command value and described dc power command value；
According to described DC voltage command value and described DC current command value, described current conversion station is controlled.
A kind of current conversion station power reactive power control system, including:
Acquisition module, for gathering total reactive power value that the alternating current filter put in current conversion station provides, and obtain the described current conversion station preset and reactive power expected value that AC system exchanges；
Summation module, for the reactive power command value that the inverter obtaining in described current conversion station that described total reactive power value and described reactive power expected value are sued for peace consumes；
First processing module, for obtaining DC voltage command value according to described reactive power command value and default dc power command value；
Second processing module, for obtaining DC current command value according to described DC voltage command value and described dc power command value；
Control module, for described current conversion station being controlled according to described DC voltage command value and described DC current command value.
Scheme according to the invention described above, it is to gather total reactive power value that the alternating current filter put in current conversion station provides, and obtain the described current conversion station preset and the reactive power expected value of AC system exchange, the reactive power command value that the inverter obtaining in described current conversion station that described total reactive power value and described reactive power expected value are sued for peace consumes, dc power command value according to described reactive power command value and default described current conversion station obtains the DC voltage command value of described current conversion station, the DC current command value of described current conversion station is obtained according to described DC voltage command value and described dc power command value, according to described DC voltage command value and described DC current command value, described current conversion station is controlled；Owing to being according to described DC voltage command value and described DC current command value, described current conversion station is controlled, and described DC voltage command value and described DC current command value are based in the current conversion station of Real-time Collection total reactive power value that the alternating current filter put into provides and the reactive power expected value preset, default dc power command value obtains, may insure that conveying active power realizes the purpose to current conversion station with AC system exchange Reactive Power Control while constant, give full play to inverter dynamic reactive power regulating power.
Accompanying drawing explanation
Fig. 1 be the embodiment of the present invention one current conversion station reactive power control method realize schematic flow sheet；
Fig. 2 is converting plant " open loop+closed loop " control flow schematic diagram with AC system exchange reactive power of the present invention；
Fig. 3 is the straight-flow system model structure signal of the CIGRE direct current transportation standard test system in an example；
Ac and dc systems reactive power exchange situation when Fig. 4 is do not use embodiment of the present invention scheme；
Ac and dc systems reactive power exchange situation when Fig. 5 is only use " open loop " segmentation scheme in the embodiment of the present invention；
Fig. 6 is for using ac and dc systems reactive power exchange situation during " open loop+closed loop " scheme in the embodiment of the present invention；
Fig. 7 is the composition structural representation of the embodiment of the present invention two current conversion station power reactive power control system.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that detailed description of the invention described herein is only in order to explain the present invention, does not limit protection scope of the present invention.
Shown in Figure 1, for the flowchart of the current conversion station reactive power control method of the embodiment of the present invention one.As it is shown in figure 1, the current conversion station reactive power control method in the present embodiment comprises the steps:
Step S101: gather total reactive power value that the alternating current filter put in current conversion station provides, and obtain the described current conversion station preset and the reactive power expected value of AC system exchange；
Here, described current conversion station includes converting plant or Inverter Station, is provided with commutator in converting plant, is provided with inverter in Inverter Station；
Here, described reactive power expected value refers to the size expecting described current conversion station with the reactive power of AC system exchange, it is possible to set according to actual needs；
Specifically, it is possible to total reactive power value that the alternating current filter put in Real-time Collection current conversion station provides；
Step S102: the reactive power command value that the inverter obtaining in described current conversion station that described total reactive power value and described reactive power expected value are sued for peace consumes；
Step S103: obtain the DC voltage command value of described current conversion station according to the dc power command value of described reactive power command value and default described current conversion station；
Specifically, it is possible to according toObtain DC voltage command value；
Wherein, UdcR_ordRepresent described DC voltage command value, PdcR_ordRepresent described dc power command value, QdcR_ordRepresent described reactive power command value, Udc0RRepresent the ideal DC floating voltage value of described inverter, Idc_ordRepresent DC current command value；
Step S104: obtain the DC current command value of described current conversion station according to described DC voltage command value and described dc power command value；
Specifically, it is possible to according toObtain DC current command value；
Wherein, UdcR_ordRepresent described DC voltage command value, PdcR_ordRepresent described reactive power command value, Idc_ordRepresent described DC current command value；
Step S105: described current conversion station is controlled according to described DC voltage command value and described DC current command value；
Specifically, it is possible to control described current conversion station, so that the DC voltage of described current conversion station is consistent with described DC voltage command value, and make the DC current of described current conversion station consistent with described DC voltage command value.
Accordingly, scheme according to above-mentioned the present embodiment, it is to gather total reactive power value that the alternating current filter put in current conversion station provides, and obtain the described current conversion station preset and the reactive power expected value of AC system exchange, the reactive power command value that the inverter obtaining in described current conversion station that described total reactive power value and described reactive power expected value are sued for peace consumes, dc power command value according to described reactive power command value and default described current conversion station obtains the DC voltage command value of described current conversion station, the DC current command value of described current conversion station is obtained according to described DC voltage command value and described dc power command value, according to described DC voltage command value and described DC current command value, described current conversion station is controlled；Owing to being according to described DC voltage command value and described DC current command value, described current conversion station is controlled, and described DC voltage command value and described DC current command value are based in the current conversion station of Real-time Collection total reactive power value that the alternating current filter put into provides, and the reactive power expected value preset, the dc power command value preset obtains, may insure that conveying active power realizes the purpose to current conversion station with AC system exchange Reactive Power Control while constant, give full play to inverter dynamic reactive power regulating power, the present embodiment scheme utilizes opened loop control ensure that, and current conversion station exchanges the quick control of reactive power with AC system.
In addition, further, step can also be included: with described reactive power command value for reference quantity, described current conversion station and AC system actual exchange reactive power value are feedback quantity, process proportional, integral algorithm calculates the knots modification of described DC voltage command value, DC voltage command value according to this knots modification correction；
Specifically, it is possible to according to Δ UdcR_ord=KP(QsysR_ord-QsysR)+KI∫(QsysR_ord-QsysR) obtain the knots modification of described DC voltage command value；
Wherein, QsysR_ordRepresent described reactive power command value, QsysRRepresent described border exchange reactive power value, KPRepresent the proportionality coefficient in described proportional, integral algorithm, KIRepresent the integral coefficient in described proportional, integral algorithm.
In the present embodiment scheme, by feedback, DC voltage command value is modified, it is possible to reach the reactive power of current conversion station with AC system exchange is accurately controlled.
For the ease of understanding the solution of the present invention, below for converting plant, the principle of the current conversion station reactive power control method of the present invention is illustrated.
The reactive power that converting plant exchanges with AC system is expressed as:
QsysR=QdcR-QfcR(1)
In formula, QdcRRepresent the reactive power that the inverter (referring specifically to commutator) in converting plant consumes；QfcRRepresent the reactive power of the alternating current filter output put in converting plant；QsysRThe reactive power that-converting plant exchanges with AC system.
The reactive power Q that inverter in converting plant consumesdcRAvailable following formula calculates:
In formula, PdcRRepresent rectification side direct current transmission power；The power-factor angle of the inverter in expression converting plant.
The power factor of the inverter in converting plant is:
In formula, UdcRRepresent converting plant DC voltage；Udc0RThe ideal DC floating voltage of the inverter in expression converting plant.
The active power of converting plant is:
PdcR=UdcRId(4)
In formula, UdcRRepresent the DC voltage of converting plant, IdThe DC current of table HVDC transmission system.
DC current Id
In formula, UdcRRepresent the DC voltage of converting plant, UdcIRepresent the DC voltage of Inverter Station, RdFor DC loop line resistance.
The reactive power Q that converting plant inverter consumesdcRCan be further represented as:
Wherein,The power-factor angle of the inverter in expression converting plant.
If the reactive power that expectation converting plant and AC system exchange is QsysR_ord, by measuring total reactive power Q that the alternating current filter put into providesfcR, regulate the reactive power consumption amount Q of inverterdcRCan changing the reactive power of converting plant and AC system exchange, namely the reactive power command value of the inverter consumption in converting plant is:
QdcR_ord=QsysR_ord+QfcR(7)
When given dc power command value is Pdc_ordTime, DC voltage command value UdcR_ordFor
DC current command value Idc_ordFor
HVDC transmission system is controlled the DC voltage of described current conversion station, DC current according to formula (8) and (9) respectively, just can realize guaranteeing that conveying active power realizes the purpose to converting plant with AC system exchange Reactive Power Control while constant, give full play to inverter dynamic reactive power regulating powero
On the basis of formula (8), reactive power command value is exchanged for reference quantity with AC system with converting plant, converting plant and AC system actual exchange reactive power are feedback quantity, through can calculate the knots modification of DC voltage command value with proportional, integral (PI) algorithm:
ΔUdcR_ord=KP(QsysR_ord-QsysR)+KI∫(QsysR_ord-QsysR)(10)
In formula, Δ UdcR_ordFor the knots modification of DC voltage command value, wherein, the output area of this knots modification be rated direct voltage ± 5%-± 10%；KPFor proportionality coefficient；KIFor integral coefficient.
Scheme in above-described embodiment, can preferably be applied to HVDC transmission system (HVDC), extra-high voltage DC transmission system (UHVDC), back-to-back DC power transmission system (backtobackDCtransmissionsystem)), there is good application prospect.Usually, HVDC transmission system, extra-high voltage DC transmission system, back-to-back DC power transmission system are also collectively referred to as HVDC transmission system.
Concrete example
Utilize the straight-flow system model of CIGRE direct current transportation standard test system in PSCAD/EMTDC, can be shown in Figure 3, the present invention is proposed a plan and tests, increase formula (8) and (10) that the present invention proposes, to verify the idle control optimization method that the present invention proposes.
In CIGRE direct current transportation standard test system, change of current bus respectively configures three groups of alternating current filters, under different dc power levels, need to put into different alternating current filter group numbers, to ensure the voltage stability of AC system.Dc power level, when below 300MW, only puts into one group of double-tuned filter (250Mvar)；Dc power level, when more than 300MW, puts into one group of bivalent high-pass filter (250Mvar) more；Dc power level is when more than 700MW, then puts into a group capacitor (125Mvar).
When the idle control optimization method of the current conversion station not using the present invention to propose, the ac and dc systems reactive power exchange situation of rectification side and inverter side is as shown in Figure 4.
When the ring opening moiety of the powerless control method only using the present invention to propose, shown in reactive power exchange situation such as Fig. 5 (a) and Fig. 5 (b) of rectification side and inverter side ac and dc systems.As shown in Figure 5, the idle control optimization method of the present invention respond well, by reducing the mode of DC voltage, can reduce the reactive power exchange amount of current conversion station and AC system, but and not up to desired value (converting plant desired value is set to zero), main cause is that two ends AC system is weak AC system, while reducing DC voltage, alternating voltage also decreases, thus steady-state deviation amount occurs, and the departure of rectification side reaches 30～50Mvar.
Fig. 6 (a) and Fig. 6 (b) is after using the reactive power control method that the present invention proposes to have closed loop control function respectively, the reactive power exchange situation of rectification side and inverter side ac and dc systems.As shown in Figure 6, the idle control optimization method using closed loop control function can make current conversion station substantially zeroed with the reactive power exchange amount of AC system, reach target call, wherein, closed loop control link is the amount trimmed of one direct voltage reference value of output, the reactive power consumption amount of inverter is finely tuned, thus finally realizing controlling the purpose of reactive power exchange amount.
Embodiment two
Current conversion station reactive power control method according to the invention described above embodiment, the embodiment of the present invention also provides for a kind of current conversion station power reactive power control system.
Fig. 7 is the composition structural representation of the current conversion station power reactive power control system of the embodiment of the present invention two.Fig. 7 has illustrated the structural representation of a preferable examples of the current conversion station power reactive power control system of the present invention.According to different Considerations, when implementing the current conversion station power reactive power control system of the present invention, it is possible to what comprise shown in Fig. 7 is whole, it is also possible to only comprise a portion shown in Fig. 7.
The current conversion station power reactive power control system of an embodiment wherein, including the acquisition module 201 in Fig. 7, summation module the 202, first processing module the 203, second processing module 204, controls module 205, wherein:
Acquisition module 201, for gathering total reactive power value that the alternating current filter put in current conversion station provides, and obtain the described current conversion station preset and reactive power expected value that AC system exchanges；
Summation module 202, for the reactive power command value that the inverter obtaining in described current conversion station that described total reactive power value and described reactive power expected value are sued for peace consumes；
First processing module 203, for obtaining DC voltage command value according to described reactive power command value and default dc power command value；
Second processing module 204, for obtaining DC current command value according to described DC voltage command value and described dc power command value；
Control module 205, for described current conversion station being controlled according to described DC voltage command value and described DC current command value.
Current conversion station power reactive power control system in an embodiment wherein, it is also possible to include the correcting module 206 in Fig. 7, wherein:
Correcting module 206, for with described reactive power command value for reference quantity, described current conversion station and AC system actual exchange reactive power value are feedback quantity, through calculating the knots modification of described DC voltage command value, DC voltage command value according to this knots modification correction with proportional, integral algorithm.
Wherein in an embodiment, the first processing module 203 can basisObtain DC voltage command value；Second processing module 204 can basisObtain DC current command value；
Wherein, UdcR_ordRepresent described DC voltage command value, PdcR_ordRepresent described dc power command value, QdcR_ordRepresent described reactive power command value, Udc0RRepresent the ideal DC floating voltage value of described inverter, Idc_ordRepresent described DC current command value.
Wherein in an embodiment, correcting module 206 is according to Δ UdcR_ord=KP(QsysR_ord-QsysR)+KI∫(QsysR_ord-QsysR) obtain the knots modification of described DC voltage command value；The output area of this knots modification be rated direct voltage ± 5%-± 10%；
Wherein, QsysR_ordRepresent described reactive power command value, QsysRRepresent described border exchange reactive power value, KPRepresent the proportionality coefficient in described proportional, integral algorithm, KIRepresent the integral coefficient in described proportional, integral algorithm.
The current conversion station power reactive power control system that the embodiment of the present invention provides, it is noted that the above description to current conversion station power reactive power control system, description with above-mentioned current conversion station reactive power control method is similar, and there is the beneficial effect of above-mentioned current conversion station reactive power control method, for saving length, repeat no more；Therefore, the ins and outs not disclosed in the above current conversion station power reactive power control system that the embodiment of the present invention is provided, the description of the current conversion station reactive power control method of above-mentioned offer is provided.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics is absent from contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a current conversion station reactive power control method, it is characterised in that including:
Gather total reactive power value that the alternating current filter put in current conversion station provides, and obtain the described current conversion station preset and the reactive power expected value of AC system exchange；
The reactive power command value that the inverter obtaining in described current conversion station that described total reactive power value and described reactive power expected value are sued for peace consumes；
Dc power command value according to described reactive power command value and default described current conversion station obtains the DC voltage command value of described current conversion station；
The DC current command value of described current conversion station is obtained according to described DC voltage command value and described dc power command value；
According to described DC voltage command value and described DC current command value, described current conversion station is controlled.
2. current conversion station reactive power control method according to claim 1, it is characterised in that also include:
With described reactive power command value for reference quantity, described current conversion station and AC system actual exchange reactive power value are feedback quantity, process proportional, integral algorithm calculates the knots modification of described DC voltage command value, DC voltage command value according to this knots modification correction.
3. current conversion station reactive power control method according to claim 1, it is characterised in that:
According toObtain DC voltage command value；
According toObtain DC current command value；
Wherein, UdcR_ordRepresent described DC voltage command value, PdcR_ordRepresent described dc power command value, QdcR_ordRepresent described reactive power command value, Udc0RRepresent the ideal DC floating voltage value of described inverter, Idc_ordRepresent described DC current command value.
4. current conversion station reactive power control method according to claim 2, it is characterised in that:
According to Δ UdcR_ord=KP(QsysR_ord-QsysR)+KI∫(QsysR_ord-QsysR) obtain the knots modification of described DC voltage command value；
Wherein, QsysR_ordRepresent described current conversion station and AC system exchange reactive power command value, QsysRRepresent described current conversion station and AC system actual exchange reactive power value, KPRepresent the proportionality coefficient in described proportional, integral algorithm, KIRepresent the integral coefficient in described proportional, integral algorithm.
5. current conversion station reactive power control method according to claim 1, it is characterised in that described current conversion station reactive power control method is applied to HVDC transmission system, extra-high voltage DC transmission system, back-to-back DC power transmission system.
6. a current conversion station power reactive power control system, it is characterised in that including:
Acquisition module, for gathering total reactive power value that the alternating current filter put in current conversion station provides, and obtain the described current conversion station preset and reactive power expected value that AC system exchanges；
Summation module, for the reactive power command value that the inverter obtaining in described current conversion station that described total reactive power value and described reactive power expected value are sued for peace consumes；
First processing module, for obtaining DC voltage command value according to described reactive power command value and default dc power command value；
Second processing module, for obtaining DC current command value according to described DC voltage command value and described dc power command value；
Control module, for described current conversion station being controlled according to described DC voltage command value and described DC current command value.
7. current conversion station power reactive power control system according to claim 6, it is characterised in that also include:
Correcting module, for with described reactive power command value for reference quantity, described current conversion station and AC system actual exchange reactive power value are feedback quantity, through calculating the knots modification of described DC voltage command value, DC voltage command value according to this knots modification correction with proportional, integral algorithm.
8. current conversion station power reactive power control system according to claim 6, it is characterised in that:
Described first processing module according toObtain DC voltage command value；
Described second processing module according toObtain DC current command value；
Wherein, UdcR_ordRepresent described DC voltage command value, PdcR_ordRepresent described dc power command value, QdcR_ordRepresent described reactive power command value, Udc0RRepresent the ideal DC floating voltage value of described inverter, Idc_ordRepresent described DC current command value.
9. current conversion station power reactive power control system according to claim 7, it is characterised in that:
Described correcting module is according to Δ UdcR_ord=KP(QsysR_ord-QsysR)+KI∫(QsysR_ord-QsysR) obtain the knots modification of described DC voltage command value；The output area of this knots modification be rated direct voltage ± 5%-± 10%；
Wherein, QsysR_ordRepresent described current conversion station and AC system exchange reactive power command value, QsysRRepresent described current conversion station and AC system actual exchange reactive power value, KPRepresent the proportionality coefficient in described proportional, integral algorithm, KIRepresent the integral coefficient in described proportional, integral algorithm.
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| 赵畹君: "<<高压直流输电工程技术>>", 31 August 2004 * |
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| CN107302224B (en) * | 2017-07-17 | 2019-10-15 | 南京南瑞集团公司 | A kind of multi-terminal direct current transmission system converter station control method based on interior point method |
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| CN111525588A (en) * | 2020-04-08 | 2020-08-11 | 南方电网科学研究院有限责任公司 | Control method and device for voltage stabilization of direct current power transmission system and storage medium |
| CN111525588B (en) * | 2020-04-08 | 2021-12-14 | 南方电网科学研究院有限责任公司 | Control method and device for voltage stabilization of direct current power transmission system and storage medium |
| CN112202195A (en) * | 2020-09-10 | 2021-01-08 | 深圳供电局有限公司 | Converter station control method, converter station control device, computer equipment and readable storage medium |
| CN112202195B (en) * | 2020-09-10 | 2023-01-24 | 深圳供电局有限公司 | Converter station control method, converter station control device, computer equipment and readable storage medium |
| CN114123288A (en) * | 2021-11-30 | 2022-03-01 | 国网河南省电力公司直流运检分公司 | Method for determining optimal reactive power exchange capacity of converter station and alternating current power grid |
| CN114123288B (en) * | 2021-11-30 | 2023-11-21 | 国网河南省电力公司直流运检分公司 | Method for determining optimal reactive power exchange quantity between converter station and alternating current power grid |
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