CN111884231A - Method for balanced switching of capacitance of AVC equipment - Google Patents
Method for balanced switching of capacitance of AVC equipment Download PDFInfo
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- CN111884231A CN111884231A CN202010687409.0A CN202010687409A CN111884231A CN 111884231 A CN111884231 A CN 111884231A CN 202010687409 A CN202010687409 A CN 202010687409A CN 111884231 A CN111884231 A CN 111884231A
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The invention relates to the technical field of power systems, in particular to a method for balanced switching of capacitors of AVC equipment, which comprises the following steps: s1, carrying out one-to-one corresponding processing on a capacitor bank and a counter; s2, receiving an instruction issued by the AVC equipment; s3, when a command of 'newly putting in a plurality of capacitor banks' is received, reading the current states of all the capacitor banks, selecting a plurality of capacitor banks with smaller counter values from the capacitor banks in the corresponding states for putting in, adding 1 to the corresponding counter values, and then executing S4; s4, performing anti-overflow processing on all counters, and then returning to S2; and S5, when a command of 'newly quitting a plurality of capacitor banks' is received, reading the current states of all the capacitor banks, selecting a plurality of capacitor banks with smaller counter values from the capacitor banks in the corresponding states to quit, and returning to S2. The invention can realize balanced switching of all the capacitor banks by the AVC equipment, and effectively avoids the phenomenon that a part of the capacitor banks which are extremely small frequently act.
Description
Technical Field
The invention relates to the technical field of power systems, in particular to a method for balanced switching of capacitors of AVC equipment.
Background
The Automatic Voltage Control (AVC) is one of automatic control systems of modern power grids, has the functions of improving the voltage quality of the power grids, reducing the grid loss, increasing the stability margin and lightening the labor intensity of dispatching operators on duty, and can ensure the safe, economic and high-quality operation of the power grids. The automatic voltage control refers to centralized monitoring and analysis and calculation of the reactive voltage state of the whole power grid, and coordinated optimization control of the wide-area distributed power grid reactive devices from the global perspective. The AVC equipment is used for adjusting the bus voltage of the transformer substation and improving the voltage qualification rate, but the input and exit control of the AVC equipment on the capacitor bank of the transformer substation is unbalanced, and a control object is usually concentrated on a small part of the capacitor bank, so that the switching switch of the corresponding capacitor bank frequently acts. Frequent mechanical actions seriously threaten the service life of the capacitor bank switching switch and increase the operation and maintenance cost of the transformer substation equipment.
The Chinese patent document with the publication number of CN103812112B discloses a regional power grid AVC control method, which adds a hierarchical and partitioned control strategy on a traditional automatic voltage control system (AVC), additionally sets a load prediction link and a link for considering the current state electrical control attribute diagnosis of equipment, so that the control strategy has more foresight, and meanwhile realizes advanced control according to the running state of the equipment, thereby reducing the action delay of the equipment.
However, the above scheme is complex and relatively troublesome to implement, and equalization control is not implemented on the input and the exit of the capacitor bank.
Disclosure of Invention
The invention aims to overcome the defect of unbalanced control on the input and the exit of the existing AVC equipment on the transformer substation capacitor bank, and provides a method for the AVC equipment to switch the capacitor in a balanced manner, so that the AVC equipment can realize balanced switching of all the capacitor banks, and the phenomenon that a part of the capacitor banks which are extremely small frequently act is effectively avoided.
In order to solve the technical problems, the invention adopts the technical scheme that:
the method for the balanced switching of the capacitance of the AVC equipment comprises the following steps:
s1, carrying out one-to-one corresponding processing on a capacitor bank and a counter;
s2, after the step S1, receiving an instruction issued by the AVC equipment;
s3, after the step S2, when a command of 'newly putting in a plurality of capacitor banks' is received, reading the current states of all the capacitor banks, selecting a plurality of capacitor banks with smaller counter values from the capacitor banks in the corresponding states to put in, then adding 1 to the corresponding counter values, and then executing a step S4;
s4, performing anti-overflow processing on all counters, and then returning to the step S2;
s5, after the step S2, when a command of 'newly exiting a plurality of capacitor banks' is received, reading the current states of all the capacitor banks, selecting a plurality of capacitor banks with smaller counter values from the capacitor banks in the corresponding states to exit, and then returning to the step S2.
The invention relates to a method for uniformly switching capacitors of AVC equipment.A counter is used for counting the switching action times of a switching switch of a capacitor bank; when an AVC device issues a command of 'newly switching in a plurality of capacitor banks', a plurality of corresponding capacitor banks with smaller counter values are selected to execute the switching command, namely, the capacitor banks with less switching action times are selected to be switched in control, and frequent switching of only a very small part of the capacitor banks is avoided; and when receiving an instruction of 'newly quitting a plurality of capacitor banks' issued by AVC equipment, selecting a plurality of corresponding capacitor banks with smaller counter values to execute the quitting instruction, namely selecting the capacitor banks with less switching action times to quit control, so that the partially quitted capacitor banks can be put into use again when needed next time, and the switching action times of the switching switches of the capacitor banks can be similar or consistent.
Further, the step S1 specifically includes: the method comprises the steps of setting M groups of capacitor groups accessed into the AVC device, numbering i (i is 1,2,3, …, M) for each capacitor group in sequence, and numbering k for a counter corresponding to each capacitor groupi(i＝1,2,3,…,M)。
Further, in step S1, all counter values k when the AVC apparatus is initially accessed1＝k2＝k3＝…＝kM＝0。
Further, the specific steps of step S3 are as follows:
s31, when a command of 'newly putting in x groups of capacitor banks' is received, reading the current states of all the capacitor banks, wherein the current states comprise an 'putting-in' state and an 'exiting' state;
s32. after step S31, all capacitor banks in the Exit state are screened out and the corresponding counter k is countediSelecting x groups of capacitor banks with smaller numerical values to be put into use;
s33. after step S32, the corresponding counter kiThe value is incremented by 1 and then step S4 is performed.
Further, in step S32, when there is a counter kiAnd when a plurality of groups of capacitor groups with the same value are used, the capacitor group with the smaller capacitor group number i is preferably selected for inputting.
Further, the step S4 specifically includes: determine all counters kiWhether the numerical value has a numerical value greater than or equal to the total number M of the capacitor bank, if so, assigning new values to all the counters, and then returning to the step S2; otherwise, it returns directly to step S2.
Further, the specific steps of step S4 are as follows:
s41, selecting a counter kiMaximum value Max (k) among the numerical valuesi) And a minimum Min (k)i)；
S42, when the value is Max: (ki) When not less than M, k is counted for all countersiNumerical value of ki＝ki-Min(ki) Processing then returns to step S2; otherwise, it returns directly to step S2.
Further, the specific steps of step S4 are as follows:
s41, selecting a counter kiMaximum value Max (k) among the numerical valuesi) And a minimum Min (k)i)；
S42, when the value is Max (k)i)>At M, for all counters kiNumerical value of ki＝ki-Min(ki) Processing then returns to step S2; otherwise, it returns directly to step S2.
Further, the specific steps of step S5 are as follows:
s51, when a command of 'newly quitting the y groups of capacitor banks' is received, reading the current states of all the capacitor banks, wherein the current states comprise an 'input' state and an 'quitting' state;
s52, after step S51, all capacitor banks in the "on" state are screened out and the corresponding counter k is countediThe y capacitor banks with smaller values are selected for exit, and then the process returns to step S2.
Further, in step S52, when there is a counter kiAnd when the plurality of groups of capacitor banks with the same numerical value are selected, the capacitor bank with the smaller capacitor bank number i is preferentially selected to exit.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a method for uniformly switching capacitors of AVC equipment.A counter is used for counting the switching action times of a switching switch of a capacitor bank; when an AVC device issues a command of 'newly switching in a plurality of capacitor banks', a plurality of corresponding capacitor banks with smaller counter values are selected to execute the switching command, namely, the capacitor banks with less switching action times are selected to be switched in control, and frequent switching of only a very small part of the capacitor banks is avoided; and when receiving an instruction of 'newly quitting a plurality of capacitor banks' issued by AVC equipment, selecting a plurality of corresponding capacitor banks with smaller counter values to execute the quitting instruction, namely selecting the capacitor banks with less switching action times to quit control, so that the partially quitted capacitor banks can be put into use again when needed next time, and the switching action times of the switching switches of the capacitor banks can be similar or consistent.
Drawings
Fig. 1 is a flowchart of a method for equalizing switching of capacitors in an AVC apparatus.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Example 1
Fig. 1 shows a first embodiment of a method for equalizing switching capacitance of an AVC apparatus, including the following steps:
s1, one-to-one correspondence processing is carried out on the capacitor bank and the counter.
Specifically, the capacitor banks accessed into the AVC device are set to be M banks, and each capacitor bank is numbered with i (i is 1) in sequence2,3, …, M), then the counter corresponding to each capacitor bank is also numbered ki(i ═ 1,2,3, …, M); that is, the capacitor bank numbered 1 corresponds to the counter numbered k1Capacitor bank numbered 2, and counter numbered k corresponding thereto2And so on.
In step S1, if all the M capacitor banks are initially connected to the AVC apparatus, all the counter values are 0, that is, k1＝k2＝k3＝…＝kM0; if the capacitor bank is not initially accessed to the AVC equipment, the original value of the counter is reserved.
S2, after the step S1, receiving an instruction issued by the AVC device.
S3, after the step S2, when a command of 'newly putting in a plurality of capacitor banks' is received, reading the current states of all the capacitor banks, selecting a plurality of capacitor banks with smaller counter values from the capacitor banks in the corresponding states to put in, then adding 1 to the corresponding counter values, and then executing the step S4.
The specific steps of step S3 are as follows:
s31, when a command of 'newly putting in x groups of capacitor banks' is received, reading the current states of all the capacitor banks, wherein the current states comprise an 'putting-in' state and an 'exiting' state;
s32. after step S31, all capacitor banks in the Exit state are screened out and the corresponding counter k is countediSelecting x groups of capacitor banks with smaller numerical values to be put into use; when there is a counter kiWhen a plurality of groups of capacitor banks with the same numerical value are used, the capacitor bank with the smaller capacitor bank number i is preferentially selected to be put into use;
s33, after the step S32, a counter k corresponding to the newly input capacitor bank is addediThe value is incremented by 1 and then step S4 is performed.
It should be noted that, a plurality of corresponding capacitor banks with smaller counter values are selected to execute the switching instruction, that is, a capacitor bank with a smaller switching operation frequency is selected to perform switching control, so that frequent switching of only a very small part of the capacitor banks can be avoided.
S4, performing anti-overflow treatment on all counters, namely judging all counters kiWhether the numerical value has a numerical value greater than or equal to the total number M of the capacitor bank, if so, assigning new values to all the counters, and then returning to the step S2; otherwise, it returns directly to step S2.
The specific steps of step S4 are as follows:
s41, selecting a counter kiMaximum value Max (k) among the numerical valuesi) And a minimum Min (k)i)；
S42, when the value is Max (k)i) When not less than M, k is counted for all countersiNumerical value of ki＝ki-Min(ki) Processing then returns to step S2; otherwise, when Max (k)i)<M, the process returns to step S2.
Note that if the counter value is always increased, an overflow may occur, causing a program error, and in order to prevent the overflow, the maximum value Max (k) of the counter value is seti) When the value is greater than or equal to M, all counters are assigned with new values, and the new values are assigned by subtracting the minimum value Min (k) of the counter values from all counter valuesi) Therefore, the counter value does not lose the original counting significance.
S5, after the step S2, when a command of 'newly exiting a plurality of capacitor banks' is received, reading the current states of all the capacitor banks, selecting a plurality of capacitor banks with smaller counter values from the capacitor banks in the corresponding states to exit, and then returning to the step S2.
The specific steps of step S5 are as follows:
s51, when a command of 'newly quitting the y groups of capacitor banks' is received, reading the current states of all the capacitor banks, wherein the current states comprise an 'input' state and an 'quitting' state;
s52, after step S51, all capacitor banks in the "on" state are screened out and the corresponding counter k is countediSelecting y groups of capacitor banks with smaller values to exit; when there is a counter kiWhen a plurality of capacitor groups with the same value are selected, the capacitor group with the smaller number i is selected preferentiallyThe capacitor bank exits and then returns to step S2.
It should be noted that, a plurality of corresponding capacitor banks with smaller counter values are selected to execute the exit instruction, that is, the capacitor bank with less switching operation times is selected to perform exit control, so that the capacitor bank which is partially exited can be put into use again when needed next time, and the switching operation times of the switching switches of the capacitor banks can be similar or consistent.
Specifically, when the AVC apparatus issues an instruction of "newly investing 3 capacitor banks", that is, it indicates that a new investment of 3 capacitor banks is required:
when in the initial state, i.e. all capacitor banks are in the "exit" state, the value k of the counter1＝k2＝k3＝…＝kMAt this time, since the values of all the counters are the same, capacitor groups No. 1, No. 2, and No. 3 having smaller capacitor group numbers are selected to execute the throw-in command.
When the AVC device is in a random state (assuming that the state is that the capacitor banks accessed into the AVC device are 5 banks in total, namely M is 5, the capacitor banks No. 1, No. 2, No. 4 and No. 5 are in an exit state, the capacitor bank No. 3 is in an input state, the corresponding counter values are k respectively1＝4、k2＝4、k3＝3、k4＝3、k53), then the input process is: firstly, screening out capacitor banks in an exit state, namely No. 1, No. 2, No. 4 and No. 5; then selecting a capacitor bank with a smaller counter value, namely selecting No. 4 and No. 5 capacitor banks; and since the counter values of the No. 1 and No. 2 capacitor banks are the same, k1＝k2If 4, the capacitor group No. 1 with the smaller number is preferentially selected; so that the capacitor banks No. 1, No. 4 and No. 5 are finally selected to execute the input command.
Example 2
This embodiment is similar to embodiment 1, except that the specific steps of step S4 in this embodiment are as follows:
s41, selecting a counter kiMaximum value Max (k) among the numerical valuesi) And a minimum Min (k)i)；
S42, when the value is Max (k)i)>At M, for all counters kiNumerical value of ki＝ki-Min(ki) Processing then returns to step S2; otherwise, when Max (k)i) When M is less than or equal to M, the step returns to the step S2 directly.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A method for equalizing switching of capacitance of AVC equipment is characterized by comprising the following steps:
s1, carrying out one-to-one corresponding processing on a capacitor bank and a counter;
s2, after the step S1, receiving an instruction issued by the AVC equipment;
s3, after the step S2, when a command of 'newly putting in a plurality of capacitor banks' is received, reading the current states of all the capacitor banks, selecting a plurality of capacitor banks with smaller counter values from the capacitor banks in the corresponding states to put in, adding 1 to the corresponding counter values, and then executing a step S4;
s4, performing anti-overflow processing on all counters, and then returning to the step S2;
s5, after the step S2, when a command of 'newly exiting a plurality of capacitor banks' is received, reading the current states of all the capacitor banks, selecting a plurality of capacitor banks with smaller counter values from the capacitor banks in the corresponding states to exit, and then returning to the step S2.
2. The method for equalizing switching capacitance of AVC apparatuses according to claim 1, wherein said step S1 specifically includes: setting and connectingThe capacitors of the AVC device are grouped into M groups, and each capacitor group is numbered i (i is 1,2,3, …, M) in turn, and then the counter corresponding to each capacitor group is also numbered ki(i＝1,2,3,…,M)。
3. The method according to claim 2, wherein in step S1, when the AVC apparatus is initially connected, all the counter values k are equal1＝k2＝k3＝…＝kM＝0。
4. The method for equalizing switching capacitance of an AVC apparatus according to claim 2, wherein said step S3 includes the following steps:
s31, when a command of 'newly putting in x groups of capacitor banks' is received, reading the current states of all the capacitor banks, wherein the current states comprise an 'putting-in' state and an 'exiting' state;
s32. after step S31, all capacitor banks in the Exit state are screened out and the corresponding counter k is countediSelecting x groups of capacitor banks with smaller numerical values to be put into use;
s33. after step S32, the corresponding counter kiThe value is incremented by 1 and then step S4 is performed.
5. The method for equalizing the switched capacitances of the AVC device of claim 4, wherein in step S32, when the counter k existsiAnd when a plurality of groups of capacitor groups with the same value are used, the capacitor group with the smaller capacitor group number i is preferably selected for inputting.
6. The method for equalizing switching capacitance of AVC apparatuses according to claim 2, wherein said step S4 specifically includes: determine all counters kiWhether the numerical value has a numerical value greater than or equal to the total number M of the capacitor bank, if so, assigning new values to all the counters, and then returning to the step S2; otherwise, it returns directly to step S2.
7. The method for equalizing switching capacitance of an AVC apparatus according to claim 6, wherein said step S4 comprises the following steps:
s41, selecting a counter kiMaximum value Max (k) among the numerical valuesi) And a minimum Min (k)i)；
S42, when the value is Max (k)i) When not less than M, k is counted for all countersiNumerical value of ki＝ki-Min(ki) Processing then returns to step S2; otherwise, it returns directly to step S2.
8. The method for equalizing switching capacitance of an AVC apparatus according to claim 6, wherein said step S4 comprises the following steps:
s41, selecting a counter kiMaximum value Max (k) among the numerical valuesi) And a minimum Min (k)i)；
S42, when the value is Max (k)i)>At M, for all counters kiNumerical value of ki＝ki-Min(ki) Processing then returns to step S2; otherwise, it returns directly to step S2.
9. The method for equalizing switching capacitance of an AVC apparatus according to claim 2, wherein said step S5 includes the following steps:
s51, when a command of 'newly quitting the y groups of capacitor banks' is received, reading the current states of all the capacitor banks, wherein the current states comprise an 'input' state and an 'quitting' state;
s52, after step S51, all capacitor banks in the "on" state are screened out and the corresponding counter k is countediThe y capacitor banks with smaller values are selected for exit, and then the process returns to step S2.
10. The method according to claim 7, wherein in step S52, when there is a counter kiWhen multiple sets of capacitor sets with the same value are used, the advantages are achievedAnd firstly selecting the capacitor bank with the smaller capacitor bank number i to exit.
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| CN202010687409.0A CN111884231A (en) | 2020-07-16 | 2020-07-16 | Method for balanced switching of capacitance of AVC equipment |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529720A (en) * | 2015-11-23 | 2016-04-27 | 国家电网公司 | Dynamic reactive power priority based automatic switching method of capacitor of wind power plant |
| CN106655211A (en) * | 2016-12-19 | 2017-05-10 | 中电普瑞科技有限公司 | Coordination control interface device for transformer substation reactive-load compensation equipment |
| CN110854876A (en) * | 2019-12-12 | 2020-02-28 | 国网上海市电力公司 | Switching control method for reactive compensation capacitor |
-
2020
- 2020-07-16 CN CN202010687409.0A patent/CN111884231A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529720A (en) * | 2015-11-23 | 2016-04-27 | 国家电网公司 | Dynamic reactive power priority based automatic switching method of capacitor of wind power plant |
| CN106655211A (en) * | 2016-12-19 | 2017-05-10 | 中电普瑞科技有限公司 | Coordination control interface device for transformer substation reactive-load compensation equipment |
| CN110854876A (en) * | 2019-12-12 | 2020-02-28 | 国网上海市电力公司 | Switching control method for reactive compensation capacitor |
Non-Patent Citations (1)
| Title |
|---|
| 卞超: "广东清远电网自动电压控制策略研究", 《电子世界》 * |
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