CN104967133A - SVC voltage regulator gain self-adaptive control method based on closed-loop integration - Google Patents
SVC voltage regulator gain self-adaptive control method based on closed-loop integration Download PDFInfo
- Publication number
- CN104967133A CN104967133A CN201510333846.1A CN201510333846A CN104967133A CN 104967133 A CN104967133 A CN 104967133A CN 201510333846 A CN201510333846 A CN 201510333846A CN 104967133 A CN104967133 A CN 104967133A
- Authority
- CN
- China
- Prior art keywords
- gain
- voltage regulator
- osc0
- amount
- svc
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
Abstract
The invention relates to an SVC voltage regulator gain self-adaptive control method based on closed-loop integration. The method comprises the following steps: 1) carrying out oscillation detection on susceptance per-unit value Bpu signals output by a voltage regulator, and carrying out quick gain adjustment when detecting that the output of the voltage regulator has oscillation; and 2) carrying out gain optimization on the susceptance per-unit value Bpu signals output by the voltage regulator if the oscillation of the susceptance per-unit value Bpu signals output by the voltage regulator disappears for 30 s. The SVC voltage regulator gain self-adaptive control method based on the closed-loop integration adopts normal adjustment without interfering SVC, does not need to carry out short circuit capacity estimation, adopts the closed-loop integration method to realize gain optimization, and monitors whether the gain is reasonable and carries out real-time gain optimization according to the oscillation detection and stabilization detection results.
Description
Technical field
The present invention relates to a kind of SVC voltage regulator gain-adaptive control method, be specifically related to a kind of SVC voltage regulator gain-adaptive control method based on closed loop integral.
Background technology
China is along with the expansion of electrical network scale and the day by day complicated of running environment, in the construction of the transformation of key electrical network, extra-high voltage grid, for improving power grid security, stable and economic operation level, receiving-end system should have enough idle deposits, especially, when receiving-end system exists Voltage-stabilizing Problems, need at the load-center substation of receiving-end system configuration dynamic passive compensation equipment.
Static reactive (SVC) voltage regulating device possesses and improves voltage control, improves the static state of system and transient stability, increase ability to transmit electricity, damping system vibration, reduces the functions such as power-frequency overvoltage in high voltage power transmisson system.SVC voltage regulating device is significant and broad prospect of application in transmission system at home and abroad.The event of any change SVC busbar short-circuit levels such as voltage regulator gain KG and electric network composition, system operation mode and switching circuit is closely related.If the gain of voltage regulator is unreasonable, the SVC response time can significantly increase, and even unstability of vibrating may appear in control loop.
At present, the method taked when the gain of design transmission system SVC voltage regulator controls is: inject a little idle step by SVC, measure idle changing value and voltage change, estimated the capacity of short circuit of points of common connection by the change of points of common connection voltage and the idle exporting change of SVC, then estimate the gain of voltage regulator according to the capacity of short circuit calculated.This method needs the normal idle output by intervening SVC to measure capacity of short circuit.If have multiple SVC in nearer electrical areas, the voltage control between each SVC will influence each other, and in order to Measurement accuracy capacity of short circuit, needs to establish a communications link between each SVC, controls with the gain coordinating each SVC.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of SVC voltage regulator gain-adaptive control method based on closed loop integral, do not need the normal regulating of intervening SVC, do not need the estimation carrying out capacity of short circuit, take the method for closed loop integral to realize the optimization of gain, according to the result of oscillation test and stability monitoring, whether monitor amount of gain rationally and real-time optimization amount of gain.
The object of the invention is to adopt following technical proposals to realize:
Based on a SVC voltage regulator gain-adaptive control method for closed loop integral, its improvements are, comprising:
(1) oscillation test being carried out to the susceptance perunit value Bpu signal that described voltage regulator exports, carrying out gain quick adjustment when detecting that voltage regulator exports to have during vibration;
(2) if the susceptance perunit value Bpu signal oscillating that described voltage regulator exports disappears and continues 30s, gain optimization is carried out to the susceptance perunit value Bpu signal that described voltage regulator exports.
Preferably, described step (1) comprising:
(1-1) by band pass filter, filtering process is carried out to the susceptance perunit value Bpu that described voltage regulator exports, obtain the signal osc0 that can reflect vibration; Wherein, describedly can reflect that the frequency of the signal osc0 of vibration is 5-60Hz;
(1-2) the first threshold value is set and compares with described osc0, judge whether described osc0 exists vibration, if there is vibration, obtain width and exceed first pulse signal of the time corresponding to described first threshold value for described osc0 amplitude and go to step (1-3), vibrate if do not exist, end operation;
(1-3) integration carried out to the time in described osc0 between two adjacent zero crossings and obtain the frequency values of described integral result, if the frequency values of described integral result is greater than 10Hz, go to step (1-4), if described frequency values is less than 10Hz, end operation;
(1-4) integration is carried out to the pulse signal in described first pulse signal between two adjacent zero crossings, and integral result is multiplied by proportionality coefficient, thus obtain the first amount of gain adjustment;
(1-5) adjust the amount of gain of described SVC voltage regulator, and upgrade described amount of gain, the amount of gain by described SVC voltage regulator deducts described first amount of gain adjustment;
If the gain of described SVC voltage regulator within the scope of gain limit value, is then measured the amount of gain after described renewal by the amount of gain after (1-6) upgrading; If the amount of gain after upgrading is greater than the maximum of gain limit value, then the gain of described SVC voltage regulator measures the maximum of gain limit value; If the amount of gain after upgrading is less than the minimum value of gain limit value, then the gain of described SVC voltage regulator measures the minimum value of gain limit value.
Further, described step (1-2), judge whether described osc0 exists vibration and comprise: the first threshold value is set and described osc0 compares, if the amplitude of described osc0 in 150ms higher than described first threshold value, then there is vibration in described osc0, if the amplitude of described osc0 is lower than described first threshold value, and when continuing 150ms, then there is not vibration in described osc0.
Preferably, described step (2) comprising:
(2-1) the second threshold value is set and compares with described osc0, if described osc0 vibration disappears and continues 30s, then judge whether state osc0 stablizes, if described osc0 stablizes, slowly increase the amount of gain of the stating SVC voltage regulator maximum to gain limit value according to step-length, exceed second pulse signal of the time corresponding to described second threshold value for described osc0 amplitude if the unstable rule of described osc0 obtains width and go to step (2-2); Wherein, described second threshold value is much smaller than stating the first threshold value;
(2-2) integration carried out to the time in described osc0 between two adjacent zero crossings and obtain the frequency values of described integral result, if the frequency values of described integral result is greater than 10Hz, go to step (2-3), if described frequency values is less than 10Hz, end operation;
(2-3) integration is carried out to the pulse signal in described second pulse signal between two adjacent zero crossings, and integral result is multiplied by proportionality coefficient, thus obtain the second amount of gain adjustment;
(2-4) adjust the amount of gain of described SVC voltage regulator, and upgrade amount of gain, the amount of gain by described SVC voltage regulator deducts described second amount of gain adjustment;
If the gain of described SVC voltage regulator within the scope of gain limit value, is then measured the amount of gain after described renewal by the amount of gain after (2-5) upgrading; If the amount of gain after upgrading is greater than the maximum of gain limit value, then the gain of described SVC voltage regulator measures the maximum of gain limit value; If the amount of gain after upgrading is less than the minimum value of gain limit value, then the gain of described SVC voltage regulator measures the minimum value of gain limit value.
Further, described step (2-1), judge that described osc0 is whether stable to comprise: arrange the second threshold value and described osc0 compares, if the amplitude of described osc0 is higher than described second threshold value, then described osc0 is unstable, if the amplitude of described osc0 is lower than described second threshold value in 150ms, then described osc0 stablizes.
Further, described gain limit value can be arranged according to the points of common connection capacity of short circuit of the capacity regulating scope of described SVC voltage regulator and described SVC voltage regulator connecting system.
Beneficial effect of the present invention:
(1) do not need the normal regulating of intervening SVC, do not need the estimation carrying out capacity of short circuit, take the method for closed loop integral to realize the optimization of gain.
(2), when being applied to transmission system many covers SVC, do not need to communicate between each SVC control, the gain that can be easily adapted for use in many cover SVC flexibly controls.
(3) effectively can monitor the vibration of SVC voltage regulator, and reduce gain rapidly, effective inhibitory control vibration, makes System recover stablize.
(4) can tracking system capacity of short circuit change adaptively, be the value adapting to current short-circuit current level by gain optimization automatically, guarantee system stability and SVC has good dynamic response characteristic.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of a kind of SVC voltage regulator gain-adaptive control method based on closed loop integral of the present invention;
Fig. 2 is the program diagram of step in Fig. 1 (1); ;
Fig. 3 is the result schematic diagram that a kind of SVC voltage regulator gain-adaptive control method based on closed loop integral of the present invention suppresses vibration;
Fig. 4 is the program diagram of step in Fig. 1 (2);
Fig. 5 is the change diagram of yield value after vibration disappearance in step (2).
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
The gain that the gain-adaptive control method based on closed loop integral control that the present invention proposes is applied to transmission system SVC voltage regulator controls, the output of continuous monitoring voltage regulator, detect and whether there is any lasting increasing oscillation, wherein, increasing oscillation can be there is when adjuster still operates in high-gain system strength reduces.If detect the increasing oscillation that voltage regulator exports, constantly gain will be reduced until vibration disappears.So not only can protecting control loop and power system; the controller instability caused due to grid short circuit volume change, system disturbance or irrational regulating parameter can be avoided simultaneously to export, have and be convenient to realize, effectively suppress vibration and optimize the superiority such as dynamic response characteristic.
Based on a SVC voltage regulator gain-adaptive control method for closed loop integral, as shown in Figure 1, comprising:
(1) oscillation test being carried out to the susceptance perunit value Bpu signal that described voltage regulator exports, carrying out gain quick adjustment when detecting that voltage regulator exports to have during vibration;
(2) if the susceptance perunit value Bpu signal oscillating that described voltage regulator exports disappears and continues 30s, gain optimization is carried out to the susceptance perunit value Bpu signal that described voltage regulator exports.
Wherein, described step (1), as shown in Figure 2, comprising:
(1-1) by band pass filter, filtering process is carried out to the susceptance perunit value Bpu that described voltage regulator exports, obtain the signal osc0 that can reflect vibration; Wherein, describedly can reflect that the frequency of the signal osc0 of vibration is 5-60Hz;
(1-2) the first threshold value is set and compares with described osc0, judge whether described osc0 exists vibration, if there is vibration, obtain width and exceed first pulse signal of the time corresponding to described first threshold value for described osc0 amplitude and go to step (1-3), vibrate if do not exist, end operation; Wherein, described first threshold value can react the sensitivity of oscillation test.
Concrete, described step (1-2), judge whether described osc0 exists vibration and comprise: the first threshold value is set and described osc0 compares, if the amplitude of described osc0 in 150ms higher than described first threshold value, then there is vibration in described osc0, if the amplitude of described osc0 is lower than described first threshold value, and when continuing 150ms, then there is not vibration in described osc0.
(1-3) integration carried out to the time in described osc0 between two adjacent zero crossings and obtain the frequency values of described integral result, if the frequency values of described integral result is greater than 10Hz, go to step (1-4), if described frequency values is less than 10Hz, end operation;
In order to avoid affecting the damping action of SVC voltage regulator to low frequency oscillations, the frequency that differentiation power system oscillation and voltage regulator vibration export vibration by measuring voltage adjuster realizes, after osc0 signal exists vibration disappearance, step (1-3) will be prohibited to perform.
(1-4) integration is carried out to the pulse signal in described first pulse signal between two adjacent zero crossings, and integral result is multiplied by proportionality coefficient, thus obtain the first amount of gain adjustment;
(1-5) adjust the amount of gain of described SVC voltage regulator, and upgrade described amount of gain, the amount of gain by described SVC voltage regulator deducts described first amount of gain adjustment;
If the gain of described SVC voltage regulator within the scope of gain limit value, is then measured the amount of gain after described renewal by the amount of gain after (1-6) upgrading; If the amount of gain after upgrading is greater than the maximum of gain limit value, then the gain of described SVC voltage regulator measures the maximum of gain limit value; If the amount of gain after upgrading is less than the minimum value of gain limit value, then the gain of described SVC voltage regulator measures the minimum value of gain limit value.
Such as, as shown in Figure 3, when system short circuit capacity reduces suddenly, the excessive vibration caused to a certain degree of original gain, gain reduces after vibration being detected by SVC voltage regulator fast, and after about 400ms, vibration is totally constrained, and system reverts to stable state again.
Described step (2), as shown in Figure 4, the principle of described osc0 being carried out to the also optimized gain amount of stability monitoring is similar with the principle of described osc0 being carried out to oscillation test, but its threshold value is lower compared with the threshold value of oscillation test, there is higher sensitivity, comprising:
(2-1) the second threshold value is set and compares with described osc0, if described osc0 vibration disappears and continues 30s, then judge whether state osc0 stablizes, if described osc0 stablizes, slowly increase the amount of gain of the stating SVC voltage regulator maximum to gain limit value according to step-length, exceed second pulse signal of the time corresponding to described second threshold value for described osc0 amplitude if the unstable rule of described osc0 obtains width and go to step (2-2); Wherein, described second threshold value is much smaller than stating the first threshold value;
Concrete, described step (2-1), judge that described osc0 is whether stable to comprise: arrange the second threshold value and described osc0 compares, if the amplitude of described osc0 is higher than described second threshold value, then described osc0 is unstable, if the amplitude of described osc0 is lower than described second threshold value in 150ms, then described osc0 stablizes.
(2-2) integration carried out to the time in described osc0 between two adjacent zero crossings and obtain the frequency values of described integral result, if the frequency values of described integral result is greater than 10Hz, go to step (2-3), if described frequency values is less than 10Hz, end operation;
(2-3) integration is carried out to the pulse signal in described second pulse signal between two adjacent zero crossings, and integral result is multiplied by proportionality coefficient, thus obtain the second amount of gain adjustment;
(2-4) adjust the amount of gain of described SVC voltage regulator, and upgrade amount of gain, the amount of gain by described SVC voltage regulator deducts described second amount of gain adjustment;
If the gain of described SVC voltage regulator within the scope of gain limit value, is then measured the amount of gain after described renewal by the amount of gain after (2-5) upgrading; If the amount of gain after upgrading is greater than the maximum of gain limit value, then the gain of described SVC voltage regulator measures the maximum of gain limit value; If the amount of gain after upgrading is less than the minimum value of gain limit value, then the gain of described SVC voltage regulator measures the minimum value of gain limit value.
Such as, as shown in Figure 5, after vibration disappears, gain is optimised for a smaller value, and system voltage keeps stable.Along with capacity of short circuit increases gradually, yield value is also constantly increased by adjustment.
Further, described gain limit value can be arranged according to the points of common connection capacity of short circuit of the capacity regulating scope of described SVC voltage regulator and described SVC voltage regulator connecting system.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or equivalent replacement; and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed within claims of the present invention.
Claims (6)
1., based on a SVC voltage regulator gain-adaptive control method for closed loop integral, it is characterized in that, comprise the steps:
(1) oscillation test being carried out to the susceptance perunit value Bpu signal that described voltage regulator exports, carrying out gain quick adjustment when detecting that voltage regulator exports to have during vibration;
(2) if the susceptance perunit value Bpu signal oscillating that described voltage regulator exports disappears and continues 30s, gain optimization is carried out to the susceptance perunit value Bpu signal that described voltage regulator exports.
2. the method for claim 1, is characterized in that, described step (1) comprising:
(1-1) by band pass filter, filtering process is carried out to the susceptance perunit value Bpu that described voltage regulator exports, obtain the signal osc0 that can reflect vibration;
(1-2) the first threshold value is set and compares with described osc0, judge whether described osc0 exists vibration, if there is vibration, obtain width and exceed first pulse signal of the time corresponding to described first threshold value for described osc0 amplitude and go to step (1-3), vibrate if do not exist, end operation;
(1-3) integration carried out to the time in described osc0 between two adjacent zero crossings and obtain the frequency values of described integral result, if the frequency values of described integral result is greater than 10Hz, go to step (1-4), if described frequency values is less than 10Hz, end operation;
(1-4) integration is carried out to the pulse signal in described first pulse signal between two adjacent zero crossings, and integral result is multiplied by proportionality coefficient, thus obtain the first amount of gain adjustment;
(1-5) adjust the amount of gain of described SVC voltage regulator, and upgrade described amount of gain, the amount of gain by described SVC voltage regulator deducts described first amount of gain adjustment;
If the gain of described SVC voltage regulator within the scope of gain limit value, is then measured the amount of gain after described renewal by the amount of gain after (1-6) upgrading; If the amount of gain after upgrading is greater than the maximum of gain limit value, then the gain of described SVC voltage regulator measures the maximum of gain limit value; If the amount of gain after upgrading is less than the minimum value of gain limit value, then the gain of described SVC voltage regulator measures the minimum value of gain limit value.
3. method as claimed in claim 2, it is characterized in that, described step (1-2), judge whether described osc0 exists vibration and comprise: the first threshold value is set and described osc0 compares, if the amplitude of described osc0 is higher than described first threshold value in 150ms, then there is vibration in described osc0, if the amplitude of described osc0 is lower than described first threshold value, and when continuing 150ms, then there is not vibration in described osc0.
4. the method for claim 1, is characterized in that, described step (2) comprising:
(2-1) the second threshold value is set and with can reflect that the signal osc0 of vibration compares, if described osc0 vibration disappears and continues 30s, then judge whether state osc0 stablizes, if described osc0 stablizes, slowly increase the amount of gain of the stating SVC voltage regulator maximum to gain limit value according to step-length, exceed second pulse signal of the time corresponding to described second threshold value for described osc0 amplitude if the unstable rule of described osc0 obtains width and go to step (2-2); Wherein, described second threshold value is much smaller than stating the first threshold value;
(2-2) integration carried out to the time in described osc0 between two adjacent zero crossings and obtain the frequency values of described integral result, if the frequency values of described integral result is greater than 10Hz, go to step (2-3), if described frequency values is less than 10Hz, end operation;
(2-3) integration is carried out to the pulse signal in described second pulse signal between two adjacent zero crossings, and integral result is multiplied by proportionality coefficient, thus obtain the second amount of gain adjustment;
(2-4) adjust the amount of gain of described SVC voltage regulator, and upgrade amount of gain, the amount of gain by described SVC voltage regulator deducts described second amount of gain adjustment;
If the gain of described SVC voltage regulator within the scope of gain limit value, is then measured the amount of gain after described renewal by the amount of gain after (2-5) upgrading; If the amount of gain after upgrading is greater than the maximum of gain limit value, then the gain of described SVC voltage regulator measures the maximum of gain limit value; If the amount of gain after upgrading is less than the minimum value of gain limit value, then the gain of described SVC voltage regulator measures the minimum value of gain limit value.
5. method as claimed in claim 4, it is characterized in that, described step (2-1), judge that described osc0 is whether stable to comprise: arrange the second threshold value and described osc0 compares, if the amplitude of described osc0 is higher than described second threshold value, then described osc0 is unstable, if the amplitude of described osc0 in 150ms lower than described second threshold value, then described osc0 stablizes.
6. the method as described in claim 2 or 4, is characterized in that, described gain limit value can be arranged according to the points of common connection capacity of short circuit of the capacity regulating scope of described SVC voltage regulator and described SVC voltage regulator connecting system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510333846.1A CN104967133B (en) | 2015-06-16 | 2015-06-16 | A kind of SVC voltage regulator gain-adaptive control methods based on closed loop integral |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510333846.1A CN104967133B (en) | 2015-06-16 | 2015-06-16 | A kind of SVC voltage regulator gain-adaptive control methods based on closed loop integral |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104967133A true CN104967133A (en) | 2015-10-07 |
| CN104967133B CN104967133B (en) | 2018-01-19 |
Family
ID=54221126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510333846.1A Active CN104967133B (en) | 2015-06-16 | 2015-06-16 | A kind of SVC voltage regulator gain-adaptive control methods based on closed loop integral |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104967133B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5438505A (en) * | 1991-02-05 | 1995-08-01 | Lambda Electronics, Inc. | Adaptive control method for power converters |
| CN1484118A (en) * | 2001-07-13 | 2004-03-24 | ����-��˹â��ϵͳ�ɷ�����˾ | Model-free self-adaptation of process controller |
| CN102157933A (en) * | 2011-03-02 | 2011-08-17 | 华北电力大学 | Design method of stabilizer of power system |
-
2015
- 2015-06-16 CN CN201510333846.1A patent/CN104967133B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5438505A (en) * | 1991-02-05 | 1995-08-01 | Lambda Electronics, Inc. | Adaptive control method for power converters |
| CN1484118A (en) * | 2001-07-13 | 2004-03-24 | ����-��˹â��ϵͳ�ɷ�����˾ | Model-free self-adaptation of process controller |
| CN102157933A (en) * | 2011-03-02 | 2011-08-17 | 华北电力大学 | Design method of stabilizer of power system |
Non-Patent Citations (1)
| Title |
|---|
| 曾智桢: "10kV静止无功补偿器的多目标控制策略及其工程实现", 《中国优秀硕士学位论文全文数据库》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104967133B (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10308127B2 (en) | Electric vehicle charging pile control system and method considering grid frequency safety | |
| CN103676832B (en) | Wind turbine and wind park are operated in different grid strengths | |
| CN201260080Y (en) | Device for passive compensation and harmonic wave control for intelligent electric power system | |
| CN105186518B (en) | A kind of distribution network electric energy quality comprehensive optimization system | |
| CA2333851C (en) | Power system stabilization system and method employing a rechargeable battery system | |
| CN102856911B (en) | Control method for access of dynamic reactive power compensation device to power transmission grid | |
| EP3631930B1 (en) | Improvements relating to voltage control in renewable power plants | |
| Farahani | Damping of subsynchronous oscillations in power system using static synchronous series compensator | |
| CN103956734A (en) | Multi-target electric energy quality comprehensive control and optimization device | |
| CN103840473A (en) | Double SVC coordination control device | |
| CN104269854B (en) | Voltage control method based on direct current inverter station stability measurement indexes | |
| CN102280886B (en) | Distribution transformer economy operation criterion algorithm system | |
| CN102868178B (en) | Method for improving grid-connected transient stability in wind power plant voltage automatic control system | |
| CN109378853B (en) | Grid-connected unit primary frequency modulation rapid adjustment system and method under direct current fault | |
| CN106849145B (en) | Control method and system for coordination of direct current frequency limiter and power modulation | |
| CN104967133A (en) | SVC voltage regulator gain self-adaptive control method based on closed-loop integration | |
| KR20160145160A (en) | Method and device for reducing voltage fluctuations in a supply network | |
| CN108110751A (en) | Emergency flight control electric system stabilizing method | |
| CN105870930B (en) | A kind of low-frequency load shedding control method of intelligent appliance | |
| CN110212543A (en) | A kind of electric power spring system that taking into account non-critical loads and its control method | |
| CN103346566B (en) | Compensation performance diagnosis and improvement method for passive filter | |
| CN201656480U (en) | Active filter and reactive power compensation device | |
| CN104201684B (en) | Low frequency low voltage load shedding optimization control method based on load control sensitivity | |
| CN110896217A (en) | Network source coordination control method and device for improving voltage stability of receiving-end power grid | |
| CN106771879B (en) | Power grid state detection method and device and static transfer switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Xiang Inventor after: Li Lanfang Inventor after: Zhao Gang Inventor after: Cui Dawei Inventor after: Chen Zhenyang Inventor after: Zhang Song Inventor before: Li Lanfang Inventor before: Zhao Gang Inventor before: Cui Dawei Inventor before: Chen Zhenyang Inventor before: Zhang Song |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 102200 Beijing city Changping District South Shao Zhen Nan Road No. 16 Co-patentee after: NARI Group Co. Ltd. Patentee after: China Electric Prime Technology Co., Ltd. Address before: 102200 Beijing city Changping District South Shao Zhen Nan Road No. 16 Co-patentee before: Nanjing Nari Co., Ltd. Patentee before: China Electric Prime Technology Co., Ltd. |