CN110661269A - Phase modulator reactive power rapid supporting method for resisting direct-current continuous commutation failure - Google Patents
Phase modulator reactive power rapid supporting method for resisting direct-current continuous commutation failure Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- 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
- H02J3/1885—Arrangements for adjusting, eliminating or compensating reactive power in networks using rotating means, e.g. synchronous generators
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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
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- 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]
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Abstract
The invention provides a phase modulator reactive power rapid supporting method for resisting direct current continuous commutation failure, which comprises the following steps of (1) establishing a direct current commutation failure bus voltage critical value model under the current working condition; (2) establishing a phase modulator reactive power limit value model; (3) establishing a direct-current reactive power shortage model under the conditions of direct-current three-phase faults and single-phase faults; (4) judging whether the voltage of the direct current bus is lower than the critical value of the voltage of the direct current commutation failure bus; if yes, executing the step (5), otherwise, keeping the original operation mode of the phase modulator unchanged; (5) judging whether the deficit value of the direct-current reactive power is greater than a reactive limit value which can be sent by the phase modulator, and sending an instruction to an excitation system of the phase modulator according to a judgment result; (6) and the phase modulator excitation system sends out reactive power according to the received reactive power instruction value. The invention enables the reactive power of the phase modulator to be supported according to the reactive power value required by the direct current during the fault period, thereby avoiding the phenomena of undervoltage and overvoltage.
Description
Technical Field
The invention belongs to the technical field of power systems, and particularly relates to a phase modulator reactive power fast supporting method for resisting direct-current continuous commutation failure.
Background
Because of the outstanding advantages of ultra-high voltage direct current transmission engineering in the aspects of technology, economy, safety and the like, China has become the country with the widest application prospect of remote direct current transmission worldwide. However, with the increasingly prominent problem of 'strong direct current and weak direct current' of the power grid of a company, the extra-high voltage direct current transmission project puts higher demands on dynamic reactive support of the power grid, so that a new generation of large phase modulators with the characteristics of high-capacity bidirectional dynamic reactive support and the like are produced in response to operation, and the phase modulators are deployed on the extra-high voltage power grid in a large scale. However, the reactive power generated by the phase modulator of the new generation at present mainly follows the voltage fluctuation, and the suppression effect on the direct current continuous commutation failure and the actual requirement of the direct current reactive power are not directly considered. Meanwhile, the direct current commutation failure scene is not considered, so that the direct current bus voltage has an overvoltage phenomenon possibly.
Aiming at the problem that the reactive power generated by a phase modulator in an extra-high voltage direct current converter station lacks a theoretical basis and does not consider the actual requirement of the direct current reactive power, the invention provides a phase modulator reactive power rapid supporting method for resisting direct current continuous commutation failure, and the method has an important guiding function for improving the rapid supporting capability of the phase modulator in the direct current converter station.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art and the problem that the reactive power generated by a phase modulator in a direct current converter station under a typical fault condition is lack of a reference value, the invention provides a phase modulator reactive power rapid supporting method for resisting direct current continuous phase conversion failure, and aims to support the reactive power of the phase modulator according to the reactive power value required by direct current during the fault period, avoid the phenomena of undervoltage and overvoltage and play an important role in guiding the engineering practice.
In order to achieve the above object, according to an aspect of the present invention, a method for fast supporting reactive power of a phase modulator to resist direct current continuous commutation failure is provided, which specifically includes the following steps:
(1) establishing a direct-current commutation failure bus voltage critical value model under the current working condition according to the direct-current bus voltage, the direct-current turn-off angle and the trigger angle under the direct-current normal operation working condition;
(2) establishing a phase modulator reactive power limit value model;
(3) establishing a direct-current reactive power shortage model under the conditions of direct-current three-phase faults and single-phase faults;
(4) judging whether the voltage of the direct current bus is lower than the critical value of the voltage of the direct current commutation failure bus; if the direct current judgment result is yes, indicating that the direct current commutation failure occurs, and executing the step (5); if the direct judgment result is negative, the direct current commutation failure does not occur, and the phase modulator keeps the original operation mode unchanged;
(5) calculating the DC reactive power shortage according to the actual voltage value, judging whether the DC reactive power shortage value is larger than a reactive limit value which can be sent by a phase modulator or not, if so, sending an instruction to an excitation system of the phase modulator according to the maximum reactive limit value of the phase modulator, and if not, sending a control instruction to the excitation system of the phase modulator according to the DC reactive power shortage value;
(6) and the phase modulator excitation system sends out reactive power according to the received reactive power instruction value.
Further, the voltage critical value U causing the direct current commutation failure under the condition of three-phase fault in the step (1)2The calculation formula is as follows:
wherein, U1Indicating the voltage value of the direct current bus under normal condition, alpha is the trigger delay angle, gamma is the converter cut-off angle under normal working condition, gamma is0The current converter turn-off angle under the rated working condition;
critical commutation failure voltage critical value U under single-phase fault condition of power grid3The calculation is as follows:
wherein the content of the first and second substances,
is the phase offset angle of the commutation zero crossing.
Further, the direct current reactive power shortage model under the conditions of the direct current three-phase fault and the single-phase fault established in the step (3) is concretely defined as follows;
wherein, is Δ Q1The value is a reactive deficit value under the condition of single-phase fault; delta Q3The value is a reactive power deficit value under the condition of three-phase fault, and alpha is a trigger delay angle; mu is a commutation angle.
Further, the step (5) is specifically as follows: comparing the deficiency value of the DC reactive power with the limit value Q of the phase-lag reactive power generated by the phase modulator in the step (2)cxmaxAnd an absorbable phase-advance reactive limit QjxmaxJudging whether the required direct current reactive power deficit value exceeds the maximum output range of the phase modulator or not; if the fault is a single-phase fault, judging according to the formula (9); if the fault is a three-phase fault, judging according to the formula (10):
Qjxmax＜ΔQ3＜Qcxmax (10)
wherein, XdFor phase-modifier stator inductive reactance, SNRated capacity for phase-modifying machines, KfmThe strong excitation multiple of the phase modulator, Kc the short-circuit ratio of the phase modulator, E0And (4) the rated potential of the unit.
The phase modifier reactive power rapid supporting method for resisting the direct current continuous commutation failure provided by the invention adjusts the reactive power of the phase modifier according to the actual requirement of direct current during the fault period and the condition that the phase modifier can send out reactive power limit, avoids the overvoltage phenomenon of bus voltage, can ensure that the phase modifier still has certain dynamic reactive power supporting capability during the slight fault period of a power grid, and has important significance for improving the transmission capability of extra-high voltage direct current.
Drawings
Fig. 1 is a schematic flow chart of a phase modulator reactive power fast supporting method for resisting direct-current continuous commutation failure according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a phase modulator rapidly generating reactive power to support a grid voltage and a non-phase modulator to support the grid voltage.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The phase modulator reactive power fast supporting method for resisting direct current continuous commutation failure provided by the invention is concretely explained by combining with an embodiment; the phase modulator reactive power fast supporting method for resisting direct current continuous commutation failure provided by the embodiment has a flow shown in fig. 1, and specifically comprises the following steps:
step 1: establishing a direct-current commutation failure bus voltage critical value model under the current working condition according to the direct-current bus voltage, the direct-current turn-off angle and the trigger angle under the direct-current normal operation working condition;
under normal operating conditions, the converter turn-off angle γ can be characterized as:
wherein k is the transformation ratio of the converter transformer; i isdIs direct current; u shapeLThe voltage of an inversion side alternating current bus; xcLeakage reactance of the converter transformer; beta is the leading flip angle of the inversion side.
The dc current will increase after the bus voltage has dropped, and the inverter turn-off angle γ' can be expressed as:
wherein, I'dThe voltage is the direct current after the voltage drops; alpha is a trigger delay angle; gamma ray0The current converter turn-off angle under the normal working condition.
Calculating a voltage critical value U causing direct current commutation failure under the condition of three-phase failure according to the principle that direct current commutation voltage-time area are equal and the condition that direct current commutation failure is caused by the fact that the turn-off angle of a converter of an inverter station is smaller than 7 DEG2：
Wherein, U1Indicating the voltage value of the direct current bus under normal condition, alpha is the trigger delay angle, and gamma
The converter turn-off angle, gamma, under normal working condition0The turn-off angle of the converter under the rated working condition.
Similarly, under the condition of single-phase fault of the power grid, the critical phase change failure voltage critical value U3Can be calculated as:
wherein the content of the first and second substances,
is the phase offset angle of the commutation zero crossing.
Step 2: establishing a phase modulator reactive power limit value model;
according to the electromagnetic equation and control system of the phase modulator unit, the terminal voltage U and the phase modulator phase-in operation limit Q are combinedjx_SCmaxAnd hysteresis operating limit Qcx_SCmax：
Wherein, XdFor phase-modifier stator inductive reactance, SNRated capacity for phase-modifying machines, KfmThe strong excitation multiple of the phase modulator, Kc the short-circuit ratio of the phase modulator, E0And (4) the rated potential of the unit.
And step 3: establishing a direct-current reactive power shortage model under the conditions of direct-current three-phase faults and single-phase faults;
wherein, is Δ Q1The value is a reactive deficit value under the condition of single-phase fault; delta Q3The value is the reactive deficit value under the condition of three-phase fault; alpha is a trigger delay angle; mu is a commutation angle.
And 4, step 4: judging whether the voltage of the direct current bus is lower than the critical value of the voltage of the direct current commutation failure bus; if the voltage of the direct-current bus is lower than the critical value of the voltage of the direct-current commutation failure bus, indicating that the direct-current commutation failure occurs, and entering the step 5; otherwise, it indicates that no DC commutation failure occurs, and the phase modulator keeps the original operation mode unchanged.
Specifically, the real-time voltage U is judgeda，Ub，UcWhether all are less than U2(ii) a If U is presenta，Ub，UcWhether all are less than U2If so, sending out a criterion of three-phase fault of the power grid to cause direct-current commutation failure, and entering the step 5; otherwise, judging Ua，Ub，UcWhether a certain item is less than U3If a certain phase voltage is less than U3If so, sending out a direct current commutation failure criterion caused by a single-phase fault of the power grid, and entering the step 5; if U is presenta，Ub，UcOne term is greater than or equal to U3To indicate noWhen the direct current commutation fails, the phase modulator keeps the original operation mode unchanged.
And 5: calculating a direct current reactive power deficit value according to the fault type and the actual voltage value and the three-phase or single-phase fault reactive power deficit model established in the step 3, and judging whether the direct current reactive power deficit value is larger than a reactive power limit value which can be sent by the phase modulator; if the DC reactive power shortage value is smaller than the reactive limit value which can be sent by the phase modulator, sending a control instruction to the phase modulator excitation system according to the DC reactive power shortage value; and if the DC reactive power shortage value is larger than the reactive limit value which can be sent by the phase modulator, sending an instruction to the phase modulator excitation system according to the maximum reactive limit value of the phase modulator.
Specifically, the deficiency value of the DC reactive power is compared with the lag phase reactive limit value Q generated by the phase modulator in the step 2cxmaxAnd an absorbable phase-advance reactive limit QjxmaxJudging whether the required direct current reactive power deficit value exceeds the maximum output range of the phase modulator or not; if the fault is a single-phase fault, judging according to the formula (8); if the fault is a three-phase fault, judging according to the formula (9). If the DC reactive power shortage value is smaller than the reactive limit value which can be sent by the phase modulator, sending a control instruction to the phase modulator excitation system according to the DC reactive power shortage value; otherwise, sending an instruction to the phase modulator excitation system according to the maximum reactive power limit value of the phase modulator.
Qjx_SCmax＜ΔQ1＜Qcx_SCmax (8)
Qjx_SCmax＜ΔQ3＜Qcx_SCmax (9)
Step 6: and the phase modulator excitation system sends out reactive power according to the received reactive power instruction value.
According to the phase modulator reactive power quick support method for resisting direct current continuous commutation failure, the reactive power output of the phase modulator is adjusted according to the actual requirement of direct current during the fault period and the condition that the phase modulator can send out reactive power limit, the overvoltage phenomenon of bus voltage is avoided, meanwhile, the phase modulator can be guaranteed to have certain dynamic reactive power support capability during the slight fault period of a power grid, and the method has important significance for improving the ultra-high voltage direct current transmission capability.
Fig. 2 is a schematic diagram of the phase modulator of the present invention for rapidly generating reactive power to support the grid voltage and the existing non-phase modulator to support the grid voltage. It can be seen from the figure that the phase modulator of the invention is adopted to rapidly support the voltage of the power grid, is beneficial to the recovery of the direct current bus voltage, and simultaneously avoids the phenomenon of overvoltage of the bus voltage.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A phase modulator reactive power fast supporting method for resisting direct current continuous commutation failure is characterized by comprising the following steps:
(1) establishing a direct-current commutation failure bus voltage critical value model under the current working condition according to the direct-current bus voltage, the direct-current turn-off angle and the trigger angle under the direct-current normal operation working condition;
(2) establishing a phase modulator reactive power limit value model;
(3) establishing a direct-current reactive power shortage model under the conditions of direct-current three-phase faults and single-phase faults;
(4) judging whether the voltage of the direct current bus is lower than the critical value of the voltage of the direct current commutation failure bus; if the direct current judgment result is yes, indicating that the direct current commutation failure occurs, and executing the step (5); if the direct judgment result is negative, the direct current commutation failure does not occur, and the phase modulator keeps the original operation mode unchanged;
(5) calculating the DC reactive power shortage according to the actual voltage value, judging whether the DC reactive power shortage value is larger than a reactive limit value which can be sent by a phase modulator or not, if so, sending an instruction to an excitation system of the phase modulator according to the maximum reactive limit value of the phase modulator, and if not, sending a control instruction to the excitation system of the phase modulator according to the DC reactive power shortage value;
(6) and the phase modulator excitation system sends out reactive power according to the received reactive power instruction value.
2. The phase modulator reactive power fast supporting method for resisting direct current continuous commutation failure of claim 1, wherein:
voltage critical value U causing direct current commutation failure under three-phase fault condition in step (1)2The calculation formula is as follows:
wherein, U1Indicating the voltage value of the direct current bus under normal condition, alpha is the trigger delay angle, gamma is the converter cut-off angle under normal working condition, gamma is0The current converter turn-off angle under the rated working condition;
critical commutation failure voltage critical value U under single-phase fault condition of power grid3The calculation is as follows:
wherein the content of the first and second substances,
is the phase offset angle of the commutation zero crossing.
3. The phase modulator reactive power fast supporting method for resisting direct current continuous commutation failure of claim 1, wherein: the direct current reactive power shortage model established in the step (3) under the conditions of direct current three-phase faults and single-phase faults is concretely defined as follows;
wherein, is Δ Q1The value is a reactive deficit value under the condition of single-phase fault; delta Q3The value is a reactive power deficit value under the condition of three-phase fault, and alpha is a trigger delay angle; mu is a commutation angle.
4. The phase modulator reactive power fast supporting method for resisting direct current continuous commutation failure of claim 1, wherein: the step (5) is specifically as follows: comparing the deficiency value of the DC reactive power with the limit value Q of the phase-lag reactive power generated by the phase modulator in the step (2)cxmaxAnd an absorbable phase-advance reactive limit QjxmaxJudging whether the required direct current reactive power deficit value exceeds the maximum output range of the phase modulator or not; if the fault is a single-phase fault, judging according to the formula (9); if the fault is a three-phase fault, judging according to the formula (10):
Qjxmax＜ΔQ3＜Qcxmax (10)
wherein, XdFor phase-modifier stator inductive reactance, SNRated capacity for phase-modifying machines, KfmThe strong excitation multiple of the phase modulator, Kc the short-circuit ratio of the phase modulator, E0And (4) the rated potential of the unit.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525579A (en) * | 2020-04-23 | 2020-08-11 | 国网江苏省电力有限公司无锡供电分公司 | Control method and device for energy storage power station to participate in power grid voltage regulation |
| CN111769569A (en) * | 2020-05-26 | 2020-10-13 | 国电南瑞科技股份有限公司 | Control method, device and system for phase modulator of extra-high voltage direct current transmitting end converter station |
| CN112234625A (en) * | 2020-09-11 | 2021-01-15 | 国网湖北省电力有限公司电力科学研究院 | Practical direct-current continuous commutation failure suppression device and method based on phase modulator and stability system |
| WO2021208293A1 (en) * | 2020-04-14 | 2021-10-21 | 中国电力科学研究院有限公司 | Phase modifier control method and device, phase modifier system, and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545835A (en) * | 2013-09-22 | 2014-01-29 | 国家电网公司 | Direct-current power system commutation failure judgment method |
| CN107342630A (en) * | 2017-07-31 | 2017-11-10 | 国电南瑞科技股份有限公司 | A kind of phase modifier emergency control method and system for suppressing the continuous commutation failure of direct current |
| CN109802399A (en) * | 2019-01-24 | 2019-05-24 | 重庆大学 | Consider phase modifier coordinative role and the UHVDC converter station dynamic reactive power optimization method that system filter requires |
| CN110323772A (en) * | 2019-04-26 | 2019-10-11 | 国网浙江省电力有限公司电力科学研究院 | The phase modifier and capacitor control method and system of promotion direct current receiving end power system restoration ability |
-
2019
- 2019-11-03 CN CN201911062505.XA patent/CN110661269A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545835A (en) * | 2013-09-22 | 2014-01-29 | 国家电网公司 | Direct-current power system commutation failure judgment method |
| CN107342630A (en) * | 2017-07-31 | 2017-11-10 | 国电南瑞科技股份有限公司 | A kind of phase modifier emergency control method and system for suppressing the continuous commutation failure of direct current |
| CN109802399A (en) * | 2019-01-24 | 2019-05-24 | 重庆大学 | Consider phase modifier coordinative role and the UHVDC converter station dynamic reactive power optimization method that system filter requires |
| CN110323772A (en) * | 2019-04-26 | 2019-10-11 | 国网浙江省电力有限公司电力科学研究院 | The phase modifier and capacitor control method and system of promotion direct current receiving end power system restoration ability |
Non-Patent Citations (2)
| Title |
|---|
| 李兆伟 等: "抑制直流连续换相失败的调相机紧急控制", 《电力系统自动化》 * |
| 王维 等: "接地故障下的ＳＶＣ优化设计及其对后续换相失败控制策略", 《电力系统自动化》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208293A1 (en) * | 2020-04-14 | 2021-10-21 | 中国电力科学研究院有限公司 | Phase modifier control method and device, phase modifier system, and storage medium |
| CN111525579A (en) * | 2020-04-23 | 2020-08-11 | 国网江苏省电力有限公司无锡供电分公司 | Control method and device for energy storage power station to participate in power grid voltage regulation |
| CN111769569A (en) * | 2020-05-26 | 2020-10-13 | 国电南瑞科技股份有限公司 | Control method, device and system for phase modulator of extra-high voltage direct current transmitting end converter station |
| CN112234625A (en) * | 2020-09-11 | 2021-01-15 | 国网湖北省电力有限公司电力科学研究院 | Practical direct-current continuous commutation failure suppression device and method based on phase modulator and stability system |
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Application publication date: 20200107 |