DE19544777C1 - Control method for converter station of HV DC transmission network - Google Patents

Control method for converter station of HV DC transmission network

Info

Publication number
DE19544777C1
DE19544777C1 DE1995144777 DE19544777A DE19544777C1 DE 19544777 C1 DE19544777 C1 DE 19544777C1 DE 1995144777 DE1995144777 DE 1995144777 DE 19544777 A DE19544777 A DE 19544777A DE 19544777 C1 DE19544777 C1 DE 19544777C1
Authority
DE
Germany
Prior art keywords
setpoint
value
power
control
converter station
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.)
Expired - Fee Related
Application number
DE1995144777
Other languages
German (de)
Inventor
Franz Dipl Ing Karlecik-Maier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE1995144777 priority Critical patent/DE19544777C1/en
Application granted granted Critical
Publication of DE19544777C1 publication Critical patent/DE19544777C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60Arrangements for transfer of electric power between AC networks via a high-tension DC link, HVDC transmission

Abstract

A process and device are disclosed for regulating n power converter stations of a multipoint high-voltage direct current transmission network (2), wherein each station regulation (6) generates a control signal by means of a coordinated vector regulation. The extinction angle nominal value ( gamma o) of a power converter station (4) operated in the "alternating converter" mode results from the sum of a minimal extinction angle nominal value ( gamma omin) and of a generated extinction angle additional nominal value ( gamma oadd). The extinction angle additional set value ( gamma oadd) is proportional to a sensed power regulation differential value (dP) as soon as a negative or positive power regulation differential threshold value (dPu, dPo) is not reached or is exceeded. A multiterminal high-voltage direct current transmission regulation system is thus obtained which has a simple structure and a decentralised design, dispensing with an overriding master regulator and costly telecommunications installations.

Description

The invention relates to a method and a front direction for controlling n converter stations one HVDC multi-point network.

It is a "control concept for a multiterminal high chip direct current transmission "(conference proceedings East West Energy Bridge, International Conference, Warsaw, October 24-25, 1995) known, which consists of a higher-level master controller and the station's own control functions. The multi-terminal system consists of a total of five bipolar converter states tion through two parallel DC overhead lines are connected per pole. The main task of the parent Regulation consists in the coordination of performance and Current setpoints for the stationary operating point. When out In the case of a converter station, the system should remain stable ben, even if the communication between the master controller and is temporarily interrupted by the converter stations. This higher-level control sums up the power setpoints on. If this sum is not equal to zero, then the mistake ler corresponding to weighting coefficients on the ver different converter stations. The coefficients You can choose any number, and their sum must be one. From the power setpoints thus determined, the current setpoints values determined for the individual converter stations, by setting the power setpoints through the actual DC voltage value of the respective station is divided. Because the performance losses can usually not be calculated in advance and therefore when determining the power setpoints the current setpoints are not taken into account dividing usually does not result in zero in total. Similar to how the power target values are determined  therefore the current setpoints are adjusted via a control loop, so that the total current of all rectifiers and inverters is zero is. The weighting factors are set so that the Sum is one.

The station control as in every converter station exists, consists of two current control paths and two Voltage control paths and a minimum current regulator. The mo mentally active control difference is a combination of Minimum and maximum failure blocks determined. With this re only one converter station may be voltage-dependent be correct, d. that is, only one rectifier or one change richter works in this operating state. What stream judge best suited for this depends on the specific len system configuration. At the current in the operating point regulated inverters are two alternative characteristics to disposal. On the one hand, with system malfunctions reduced DC voltage with constant voltage regulation at the AC can be worked. The second alternative works with a current regulator. In this alternative, the current target value in the area of reduced DC voltage over a VDCOL function (Voltage Dependent Current Order Limit) abge lowers. Which of the two options is cheaper must through simulation calculation for a special system configuration ration can be determined. In the presented multi-terminal system the voltage determining function of a Converter station, which is operated as a rectifier, perceived. All other stations are in the stationary Operating point operated under current control. The two inverters tester stations work in the area of reduced DC voltage current controlled with a VDCOL function.

With this known control concept for a multi-terminal HVDC, consisting of five converter stations, cannot be predicted how the regulation of an nth power converter terstation will look if n converter stations in  a DC system should work together. Except the control concept is very complex and be required between the higher-level master controller and a station's regulation a telecommunications. about this costly telecommunications become a target and an actual person exchanged. Furthermore, the station's own regulations in each case several types of regulation, whereby a reg an appropriate rule type is selected.

The replacement of the control type, the higher-level control and the Te Communication deteriorate the dynamic behavior of the entire DC system of the multiterminal HVDC and can also the stability of the connected three-phase systems compromise.

A coordinated vector control is known from DE 44 20 600 C1 for a high-voltage direct current transmission system knows. With this coordinated vector control, the Power converters operated in the "Rectifier" operating mode station depending on a power to be transmitted and a setpoint value of a measured actual DC voltage value generated for current and voltage and with a determined Actual value pair for current and voltage compared. The generated Control deviations are added up. From this sum signal a signal is generated such that the sum of the rule softening becomes zero. For those in the "Change richter "operated converter station becomes dependent the power to be transmitted and an extinguishing angle setpoint tes generates a pair of setpoints for current and voltage, which is compared with a determined actual value pair. The Re gel deviations are subtracted from each other. For this Difference signal, a control signal is generated such that the difference between the control deviations becomes zero. This Coordinated vector control method has setpoint pairs for Current and voltage on both the goals of the inverter and the goals of the rectifier.  

The setpoint value pair of the inverter is thus determined that it regulates the extinguishing angle and at the same time the performance that is provided by the rectifier. The generated control characteristic of the inverter ent speaks with the characteristics of a resistance regulator a positive slope. The characteristic of the scheme for the rectifier according to the vector control method is for one Setpoint pair at the nominal point the tangent to the associated Lei Performance hyperbole of the target performance. This means that the vector control principle of voltage changes on Inverters tolerated if the power changes lie on the tangent. Through this training the Both characteristics have a stable working point.

The invention is based on the object of a method and a device for controlling n converter stations of a HVDC multi-point network.

This object is achieved with the features of the An saying 1 or 6 solved.

Because each converter station of an HVDC multi-point zes is provided with a coordinated vector control, where the controller arrangement for the inverter by one direction for determining an additional extinguishing angle setpoint is expanded, despite changes in the direct current sy stem and / or stable Ar in the associated three-phase networks operating points can be set decentrally in each station. To determine the additional extinguishing angle setpoint, a determined power control difference used. Through this Combination of the known coordinated vector control and the additional determination of the extinguishing angle setpoint in Ab a con constant load flow in the DC system who maintain the. Since this procedure works decentrally, no one is over he ordered master controllers and no longer telecommunications  necessary, which increases the effort of this control concept simplified compared to the regulatory concept mentioned at the beginning and the dynamics improve.

Advantageous embodiments of the method are the Unteran say 2 to 5 and advantageous embodiments of the front direction for performing the method according to the invention can be found in subclaims 7 to 15.

To further explain the invention, reference is made to the drawing Reference, in the an advantageous embodiment a device for performing the Ver driving is illustrated schematically.

Fig. 1 shows a HVDC multi-point network with n power stations, the

Fig. 2 shows a diagram of the working characteristics of a HVDC multi-point network with three rectifier and inverter stations

Fig. 3 shows a block diagram of a known coordinated vector control for a lossy DC line, in

Fig. 4 is a corresponding diagram of the operation characteristic curves illustrating the

Fig. 5 is a block diagram showing an apparatus for carrying out the method according to the invention for a station of the HVDC-multipoint network and in

Fig. 6 is a diagram of the associated operating characteristics is shown.

Fig. 1 shows a high voltage direct current transmission multicast network 2 with n converter stations 4 from which r be operated as a rectifier and as an inverter i. Each converter station 4 is provided with its own station control 6 . In addition, each converter station 4 is electrically connected to a three-phase network 12 via a converter transformer 8 with an associated tap changer control 10 . The HVDC multi-point network 2 , also referred to as a general direct current system, has an arbitrary topology, ie the n converter stations 4 are connected with one another as desired. The normal voltage operating range of this multipoint network 2 is between 0.8 and 1.2 pu. The total rectifier power should be 1 pu and the total inverter power is then 1 pu minus losses. In Fig. 2 is a diagram for the Ar beitsk characteristics of a HVDC multi-point network 2 is shown, where at because of the clarity only for six converter stations 4 , three of which are operated as rectifiers and three as inverters, the operating characteristics are Darge. In this general DC system 2 , the working points AW1, AW2 and AW3 can be set at all converter stations 4 in the operating mode “inverter”, which are predetermined by the transformer positions and the coordinated vector control 14 (without additional device). This means that all these converter stations 4 drive the extinguishing angle setpoint γo of, for example, 17 ° el. At a predetermined power setpoint Po. The working points AG1, AG2 and AG3 of the converter stations 4 in the “rectifier” operating mode result automatically from the topology of the direct current system 2 (Kirschhoff law, mesh equation and energy conservation rate), which corresponds in each case to a predetermined power setpoint value Por. In FIG. 2, the power of the hyperbolas operated as a rectifier converter stations 4 each terstation as solid lines and that of operating as inverter current Rich 4 are each shown as broken lines. The resistance characteristics of the converter stations 4 operated as inverters are shown as straight lines whose intersections with the associated power hyperbolas result in the working points AW1, AW2 and AW3.

Fig. 3 shows a block diagram of a known coordinated vector control 14 for a lossy direct current line 16 of a high-voltage direct current transmission system 18 , by means of which two alternating voltage networks 20 and 22 are connected to one another. This HVDC system 18 comprises two converter stations 4 , which are operated as rectifiers and inverters. These two converter stations 4 are connected to each other on the DC side by means of the DC line 16 .

The HVDC system 18 further includes sensors, not specified, for recording current and voltage values Idr, Idi or Udr, Udi. A control device 24 for controlling its valves or semiconductors is connected upstream of the converter stations 4 .

Each control device 24 receives a control signal that is generated by a first or second control arrangement 26 or 28 . The first control arrangement 26 essentially comprises a first setpoint generator 30 and a first vector regulator arrangement 32 . This setpoint generator 30 receives as input signal a power setpoint Por of a predetermined power to be transmitted and an actual DC voltage value Udr. A setpoint value pair Ior and Uor for current and voltage of the converter station 4 is determined from these values Por and Udr by means of the setpoint generator 30 . The setpoint generator 30 has two characteristic curve generators 34 and 36 . The for the voltage command value Uor selected curve of the first characteristic transmitter 34 shows the VDVOC characteristic (Voltage-Dependent Voltage-Or of-Characteristic), being provided at the upper end of the range of the steady-state operation as a characteristic feature, an arcuate curve . The lower area of the characteristic curve is designed to limit the voltage. The characteristic curve of the second characteristic curve generator 36 for the current setpoint Ior essentially has a VDCOL characteristic (Voltage-Dependent-Current-Order-Limitation), ie voltage-dependent current limitation. The vector controller arrangement 32 has two comparators 38 and 40 , an adder 42 and a control element 44 . The setpoint pair Uor, Ior formed is fed to this vector controller arrangement 32 and compared there with a determined actual value pair Udr, Idr by means of the two comparators 38 and 40 . The control deviations formed for current and voltage are added up by means of the adder 42 . This sum signal is fed to the control element 44 , at whose output the control signal for the control device 24 of the converter station 4 operated as a rectifier is present. By means of this control signal, the sum of the level deviations for current and voltage is regulated to zero.

The second control arrangement 28 is analogous to that of the control arrangement 26 . A further description of the second rule 28 is therefore unnecessary. Differences lie in the number of values supplied to the setpoint generator 46 , the characteristic curves of the two characteristic generator 48 and 50 and a device 52 for determining a power setpoint value Pol. Due to the variance of the input variables (actual voltage value Udi, actual power value Pdi, desired power value Poi, extinguishing angle setpoint γo, extinguishing angle actual value γ, control signal β), the characteristic curve, in particular the VDVOC characteristic, of the characteristic curve encoder 48 must be in its Height in the end area and its inclination can be specified. The VDCOL characteristic of the characteristic generator 50 can also be set. It is essential for the two-th setpoint generator 46 that a deletion angle setpoint γo is also specified, which must be observed. The generated setpoint pair Uoi, Ioi is compared by means of two comparators 38 and 40 with a determined actual value pair Udi, Idi. The control deviations formed are subtracted from one another by means of the adder 42 , since the voltage setpoint Uoi of the setpoint pair Uoi, Ioi is present at the inverting input of the comparator 38 . The difference signal is fed to the downstream control element 44 , at whose output the control signal for the control device 24 of the converter station 4 operated as an inverter is present. With this control signal, the difference between the control deviation for current and voltage is regulated to zero.

The device 52 for determining a desired power value Poi has a first-order delay element 54 with an upper and lower limit. A determined actual power value Pdi and an upper and lower power limit value Pgoi and Pgui are fed to this device 52 . The upper power limit value Pgoi is equal to the difference between the power setpoint Por of a power to be transmitted by the converter station 4 operated as a rectifier and a minimum power loss Pvmin, whereas the lower power limit value Pgui is equal to a difference between the power setpoint Por and a maximum power loss Pvmax.

In FIG. 4, the working characteristics GR and WR of a coordinated vector control 14 of an HVDC system 18 shown in FIG. 3 are illustrated in a diagram. The characteristic curve GR, which is composed of the sections hl, lm, mn and no, illustrates the rectifier characteristics, the section hl representing the performance hyperbola in the normal operating range and the section lm the maximum current limitation , the section mn illustrates the range of the voltage-dependent limitation and the section no the minimum current. The characteristic curve WR illustrates the inverter characteristic. Since the DC line 16 is not lossless, the power hyperbola for the converter station 4 operated as an inverter is not congruent with the power hyperbola of the converter station 4 operated as a rectifier. Since each point of the characteristic curve WR is determined by means of a current and voltage setpoint, the inverter characteristic is also referred to as resistance control, which represents a combined current-voltage control. The dash-dot line corresponds to a deletion angle setpoint γo.

The Fig. 5 is a block diagram showing an apparatus for carrying out the inventive method for Rege lung of n converter stations 4 of a HVDC-multipoint network 2. For reasons of clarity, only one coordinated vector control 14 according to the invention is illustrated for a converter station 4 of the HVDC multi-point network 2 . Since the converter system 4 can be operated as a rectifier or as an inverter, the station controller 6 contains a first and a second control arrangement 26 and 28 . Since the control element 44 occurs in both control arrangements 26 and 28 , a control element 44 can be dispensed with in this station control 6 . For this purpose, the outputs of the adders 42 of the two control arrangements 26 and 28 are each followed by a switch 56 and 58 , the outputs of which are linked to the control element 44 by means of an adder 60 .

The control arrangement 28 is expanded by a device 62 for determining a deletion angle additional setpoint value γoadd. This device 62 has a dead zone element 64 on the input side and a PI controller 66 on the output side. Since a determined extinguishing angle additional setpoint value γoadd is to be changed only at normal operating values of the DC voltage of the multipoint network 2, a switch 68 is arranged between the dead zone element 64 and the PI controller 66 . This switch 68 is closed as long as the DC voltage actual value Udi is greater than a predetermined limit value. During an error, associated with strong voltage drops, the additional extinguishing angle setpoint value γoadd can remain unchanged (switch 68 is open) or can be set to zero. For this purpose, a zero signal SV is applied to the PI controller 66 . The dead zone element 64 has a positive and a negative power control differential threshold value dPo and dPu. Between these two power control difference thresholds dPo DPU and the output value of the dead zone 64 remains independent of the input signal dPo zero.

As soon as the value of the input signal dP, namely an determined power control difference dP, becomes larger or smaller than the positive or negative power control difference threshold value dPo or dPu, the output value of the dead zone element 64 is different from zero. This output value is fed to the PI controller 66 , at the output of which an extinguishing angle setpoint value γoadd is present. So that the deletion angle γo for the setpoint generator 46 can only be changed within a predetermined range, the PI controller 66 is provided with a lower limit value zero and an upper limit value maxγoadd. The extinguishing angle setpoint value γo is composed of a minimum extinguishing angle setpoint value γomin and the determined extinguishing angle additional setpoint value γoadd, an adder 70 being provided. The limits dPu and dPo of the dead zone of the dead zone element 64 are each determined by means of a comparator 72 and 74 , a lower power limit value Pgui being present at the inverting input of the comparator 72 and a desired power value Poi at the non-inverting input. An upper power limit value Pgoi is present at the non-inverting input of comparator 74 and a power setpoint value Poi is present at the inverting input. The power control difference threshold value dP is determined by means of a further comparator 76 , a non-inverting input having a desired power value Poi and an inverted input having an actual power value Pdi.

FIG. 6 shows a diagram of the working characteristics GR and WR of the control concept presented in FIG. 5. In comparison to the diagram according to FIG. 4, a new working point NP has been determined, which is located on the same performance hyperbole of the inverter characteristic. This new operating point NP is set decentrally at a converter station 4 , since the voltage in the DC system 2 has decreased. Regardless of this change in voltage, the load flow has remained unchanged.

This control concept according to the invention for a multi-terminal high-voltage direct current transmission is simply structured, has the same structure for all converter stations 4 , is a decentralized control concept, as a result of which no expensive telecommunication is required and has a higher dynamic range since there is no controller replacement and none higher-level master controller are available. In addition, this concept can better contribute to the stabilization of the DC system 2 and the three-phase systems 12 .

Claims (15)

1. Method for controlling n converter stations ( 4 ) of an HVDC multi-point network ( 2 ),
  • - Where for each operating mode in the "Rectifier" operating converter station ( 4 ), depending on a respective power to be transmitted (Por) and a measured actual DC voltage value (Udr), a setpoint value pair (Uor, Ior) for current and voltage of the converter station ( 4 ) is generated,
  • control deviations for current and voltage are determined as a function of a determined actual value pair (Udr, Idr) and this setpoint pair (Uor, Ior) generated,
  • these control deviations are added up and a control signal is generated, as a result of which this sum becomes zero,
  • - Whereby for each in the operating mode "inverter" be operated converter station ( 4 ), depending on a power and extinction angle setpoint (Poi, γo) formed, a setpoint pair (Uoi, Ioi) for current and voltage of the converter station ( 4 ) is generated becomes,
  • control deviations for current and voltage are determined as a function of a determined actual value pair (Udi, Idi) and this generated setpoint pair (Uoi, Ioi),
  • - With these control deviations being subtracted from each other and a control signal being generated, as a result of which this difference becomes zero,
  • - The power setpoint (Poi) of a converter station ( 4 ) operated in the "inverter" operating mode is determined from its actual power value (Pdi) and a formed upper and lower power limit value (Pgoi, Pgui),
  • - The extinguishing angle setpoint (γo) of a converter station ( 4 ) operated in the operating mode "inverter" is determined as the sum of a minimum extinguishing angle setpoint (γomin) and a generated additional extinguishing angle setpoint (γoadd) and
  • - whereby this extinguishing angle additional setpoint (γoadd) is proportional to a power control difference (dP) determined from the power setpoint and actual value (Poi, Pdi) as soon as a negative or positive power control difference threshold value (dPu, dPo) is undershot or exceeded.
2. The method according to claim 1, wherein the extinguishing angle additional target value (γoadd) can only be changed during normal operation is.
3. The method of claim 1, wherein the extinguishing angle additional target value (γoadd) outside normal operation to zero is set.
4. The method according to any one of the preceding claims 1 to 3, taking the negative and positive power control difference Threshold value (dPu, dPo) is changeable.
5. The method of claim 4, wherein the negative and posi tive power control difference threshold (dPu, dPo) depending ability to transfer a power setpoint (Por) performance and maximum and minimum loss stung (Pvmax, Pvmin) is changeable.
6. Device for carrying out the method for controlling n converter stations ( 4 ) of an HVDC multi-point network ( 2 ) according to claim 1,
  • - Wherein for each in the operating mode "rectifier" ne converter station ( 4 ) a control arrangement ( 26 ) is provided, which has a setpoint generator ( 30 ) with a downstream vector regulator arrangement ( 32 ),
  • - The setpoint generator ( 30 ) is supplied with an actual voltage value (Udr) and a setpoint power value (Por) of a power to be transmitted, and the vector controller arrangement ( 32 ) is supplied with a determined actual value pair (Udr, Idr) for current and voltage,
  • - Wherein for each in the operating mode "inverter operated bene converter station ( 4 ) a controller arrangement ( 28 ) is seen before, a device ( 52 ) for determining a power setpoint (Poi), a device ( 62 ) for determining an extinction angle Additional setpoint (γoadd), a setpoint generator ( 46 ) and a vector controller arrangement ( 32 ),
  • - The device ( 52 ) for determining a desired power value (Poi) a determined actual power value (Pdi) and an upper and lower power limit value (Pgoi, Pgui), the setpoint generator ( 46 ) a desired power and Actual value (Poi, Pdi), an extinguishing angle setpoint and actual value (γo, γ), an actual voltage value (Udi) and a control signal (β), the vector controller arrangement ( 32 ) a determined actual value pair (Udi, Idi) for current and voltage and the device ( 62 ) for determining an additional extinguishing angle setpoint (γoadd) an actual and setpoint power value (Pdi, Poi), an upper and lower power limit value (dPo, dPu) and a minimum extinguishing angle value ( γomin) are supplied.
7. The device according to claim 6, wherein the control arrangements ( 26 , 28 ) of each converter station ( 4 ) can be switched on or off depending on their operating mode.
8. The device according to claim 6, wherein the device ( 52 ) for determining a desired power value (Poi) has a delay element ( 54 ) of the 1st order with an upper and lower limit (Pgoi, Pgui).
9. The device according to claim 6, wherein the device ( 62 ) for determining an extinguishing angle setpoint value (γoadd) has a dead zone element ( 64 ) and a PI controller ( 66 ), where an at an input of the dead zone element ( 64 ) determined power control difference threshold (dP) and at the output of the PI controller ( 66 ) the additional extinguishing angle setpoint (γoadd) are present.
10. The device according to claim 6, wherein each setpoint generator ( 30 , 46 ) of the two control arrangements ( 26 , 28 ) of each converter station ( 4 ) has two characteristic curve generators ( 34 , 36 ; 48 , 50 ) for the setpoint pair (Uor, Ior; Uoi, Ioi) for current and voltage.
11. The device according to claim 6, wherein each vector controller arrangement ( 32 ) of the two control arrangements ( 26 , 28 ) of each converter station ( 4 ) has two comparators ( 38 , 40 ), an ad dier ( 42 ) and a control element ( 44 ), in each case an output of a comparator ( 38 , 40 ) is linked to the adder ( 42 ), the output of which is connected to the input of the control unit ( 44 ).
12. The apparatus of claim 9, wherein a switch ( 68 ) is provided between the dead zone member ( 64 ) and the PI controller ( 66 ) of the device ( 62 ) for determining an extinguishing angle additional setpoint (γoadd) Normal operation of each converter station ( 4 ) is closed.
13. The apparatus of claim 9, wherein the PI controller ( 66 ) of the device ( 62 ) for determining an extinguishing angle setpoint value (γoadd) has a set input at which, outside of the normal operation of each converter station ( 4 ), a zero Signal (SV) is present.
14. The apparatus according to claim 9, wherein each limit value input of the dead zone element ( 64 ) of the device ( 62 ) for determining an additional extinguishing angle setpoint value (γoadd) is linked to an output of a comparator ( 72 , 74 ), to the latter Inputs each have an actual power value (Pdi) and an upper or lower power limit value (Pgoi, Pgui).
15. The apparatus of claim 6, wherein a microprocessor is provided as control arrangements ( 26 , 28 ) of each converter station ( 4 ).
DE1995144777 1995-11-30 1995-11-30 Control method for converter station of HV DC transmission network Expired - Fee Related DE19544777C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995144777 DE19544777C1 (en) 1995-11-30 1995-11-30 Control method for converter station of HV DC transmission network

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE1995144777 DE19544777C1 (en) 1995-11-30 1995-11-30 Control method for converter station of HV DC transmission network
AU17657/97A AU702779B2 (en) 1995-11-30 1996-11-18 Method and apparatus for controlling n converter stations in a multipoint HVDCT network
EP19960945729 EP0864192A2 (en) 1995-11-30 1996-11-18 Process and device for regulating n power converter stations of a multipoint hvdct network
CA 2238970 CA2238970A1 (en) 1995-11-30 1996-11-18 Process and device for regulating n power converter stations of a multipoint hvdct network
PCT/DE1996/002186 WO1997020373A2 (en) 1995-11-30 1996-11-18 Process and device for regulating n power converter stations of a multipoint hvdct network
NO982451A NO982451L (en) 1995-11-30 1998-05-28 FremgangsmÕte and apparatus for Õ regulate n str ° mretterstasjoner in a h ° yspent multipoint likestr ° msnett

Publications (1)

Publication Number Publication Date
DE19544777C1 true DE19544777C1 (en) 1996-12-05

Family

ID=7778890

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995144777 Expired - Fee Related DE19544777C1 (en) 1995-11-30 1995-11-30 Control method for converter station of HV DC transmission network

Country Status (6)

Country Link
EP (1) EP0864192A2 (en)
AU (1) AU702779B2 (en)
CA (1) CA2238970A1 (en)
DE (1) DE19544777C1 (en)
NO (1) NO982451L (en)
WO (1) WO1997020373A2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997045908A1 (en) * 1996-05-24 1997-12-04 Siemens Aktiengesellschaft Wind power site
WO2001003268A1 (en) * 1999-07-01 2001-01-11 Abb Ab Control of active power in a high voltage direct current transmission system
DE10134883A1 (en) * 2001-07-18 2003-01-30 Abb Research Ltd Method and device for speed-adjustable power electronic control of a gearless wind turbine
WO2007033619A1 (en) * 2005-09-22 2007-03-29 Siemens Akitengesellschaft Control method for direct current transmission by means of several power converters
WO2007033620A1 (en) * 2005-09-22 2007-03-29 Siemens Aktiengesellschaft Control method for transmitting direct current
WO2009152840A1 (en) * 2008-06-17 2009-12-23 Siemens Aktiengesellschaft Regulation method for a high voltage dc transmission plant with dc link and self-commutated inverters
WO2013189525A1 (en) * 2012-06-19 2013-12-27 Siemens Aktiengesellschaft High-voltage direct current transmission comprising a plurality of taps

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103257576B (en) * 2013-03-29 2015-11-18 国家电网公司 A kind of extinction angle start control simulation device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420600C1 (en) * 1994-06-13 1995-11-16 Siemens Ag HV DC power transmission system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4420600C1 (en) * 1994-06-13 1995-11-16 Siemens Ag HV DC power transmission system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
POVH, D.u.a.: "Regelungskonzept für eine Multiterminal-Hochspannungs-Gleichstrom- Übertragung" in: Tagungsband East West Energy Bridge, International Conference, Warschau, 24.-25.10.1995 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997045908A1 (en) * 1996-05-24 1997-12-04 Siemens Aktiengesellschaft Wind power site
WO2001003268A1 (en) * 1999-07-01 2001-01-11 Abb Ab Control of active power in a high voltage direct current transmission system
EP1069666A1 (en) * 1999-07-01 2001-01-17 Abb Ab Control of active power in a high voltage direct current transmission system
DE10134883A1 (en) * 2001-07-18 2003-01-30 Abb Research Ltd Method and device for speed-adjustable power electronic control of a gearless wind turbine
CN101273518B (en) * 2005-09-22 2013-09-11 西门子公司 Direct-current transmission regulating method with multiple current transformers
WO2007033619A1 (en) * 2005-09-22 2007-03-29 Siemens Akitengesellschaft Control method for direct current transmission by means of several power converters
WO2007033620A1 (en) * 2005-09-22 2007-03-29 Siemens Aktiengesellschaft Control method for transmitting direct current
CN101273518A (en) * 2005-09-22 2008-09-24 西门子公司 Direct-current transmission regulating method with multiple current transformers
CN101297468A (en) * 2005-09-22 2008-10-29 西门子公司 Regulation method of DC power transmission
US7729142B2 (en) * 2005-09-22 2010-06-01 Siemens Aktiengesellschaft Control method for direct-current by means of a plurality of converters
US7729138B2 (en) 2005-09-22 2010-06-01 Siemens Aktiengesellschaft Control method for direct-current transmission
CN101297468B (en) * 2005-09-22 2014-12-17 西门子公司 Regulation method of DC power transmission
US8351233B2 (en) 2008-06-17 2013-01-08 Siemens Aktiengesellschaft Closed-loop control method for an HVDC transfer installation having a DC voltage intermediate circuit and self-commutated converters
CN102067406B (en) * 2008-06-17 2013-07-31 西门子公司 Regulation method for a high voltage DC transmission plant with DC link and self-commutated inverters
CN102067406A (en) * 2008-06-17 2011-05-18 西门子公司 Regulation method for a high voltage DC transmission plant with DC link and self-commutated inverters
WO2009152840A1 (en) * 2008-06-17 2009-12-23 Siemens Aktiengesellschaft Regulation method for a high voltage dc transmission plant with dc link and self-commutated inverters
WO2013189525A1 (en) * 2012-06-19 2013-12-27 Siemens Aktiengesellschaft High-voltage direct current transmission comprising a plurality of taps

Also Published As

Publication number Publication date
AU1765797A (en) 1997-06-19
EP0864192A2 (en) 1998-09-16
NO982451D0 (en) 1998-05-28
WO1997020373A2 (en) 1997-06-05
WO1997020373A3 (en) 1997-07-17
NO982451L (en) 1998-05-28
AU702779B2 (en) 1999-03-04
CA2238970A1 (en) 1997-06-05

Similar Documents

Publication Publication Date Title
Liang et al. Dispatch of main transformer ULTC and capacitors in a distribution system
DE112009004353B4 (en) Power conversion device
RU2384932C1 (en) System of electricity transmission and method of its control
US20150131342A1 (en) Multi terminal hvdc control
KR101706406B1 (en) Controlling an inverter device of a high voltage dc system for supporting an ac system
EP1069666B1 (en) Control of active power in a high voltage direct current transmission system
Overbye et al. Voltage security enhancement using energy based sensitivities
EP2589128B2 (en) Method and control device for controlling power flow within a dc power transmission network
Kersting Distribution feeder voltage regulation control
US20030026111A1 (en) Power-electronic circuit arrangement, and a method for transmitting real power
JP6207730B2 (en) DC transmission power conversion apparatus and DC transmission power conversion method
JP4306760B2 (en) Distributed power supply
US9602021B2 (en) Hybrid high voltage direct current converter system and method of operating the same
JP2005341668A (en) Voltage regulator and voltage regulating method
CN104659805A (en) Method of operating a wind park
EP0147722B2 (en) A high voltage system for an x-ray tube
RU2660189C1 (en) Switching control method and switching control device
US4494179A (en) Control device for a converter
Mahmoud Voltage stability analysis of radial distribution networks using catastrophe theory
EP1174993B1 (en) Method and control system for voltage control at a converter station
CN102244400A (en) Digital control method for operating uninterruptible power supplies
CN100386962C (en) Second generation high-voltage large-power frequency converter
CN102067406B (en) Regulation method for a high voltage DC transmission plant with DC link and self-commutated inverters
Xu et al. Hybrid high-voltage direct current topology with line commutated converter and modular multilevel converter in series connection suitable for bulk power overhead line transmission
JP2005117734A (en) Method and device for voltage management of power distribution system

Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee