WO2003047065A1 - Gradateur de tension - Google Patents

Gradateur de tension Download PDF

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Publication number
WO2003047065A1
WO2003047065A1 PCT/JP2002/012457 JP0212457W WO03047065A1 WO 2003047065 A1 WO2003047065 A1 WO 2003047065A1 JP 0212457 W JP0212457 W JP 0212457W WO 03047065 A1 WO03047065 A1 WO 03047065A1
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WO
WIPO (PCT)
Prior art keywords
voltage
control device
control
value
range
Prior art date
Application number
PCT/JP2002/012457
Other languages
English (en)
Japanese (ja)
Inventor
Kazuhiro Nishi
Original Assignee
Kazuhiro Nishi
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 Kazuhiro Nishi filed Critical Kazuhiro Nishi
Priority to JP2003548373A priority Critical patent/JPWO2003047065A1/ja
Publication of WO2003047065A1 publication Critical patent/WO2003047065A1/fr

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Classifications

    • 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
    • H02J3/1878—Arrangements for adjusting, eliminating or compensating reactive power in networks using tap changing or phase shifting transformers
    • 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

Definitions

  • the present invention relates to a voltage control device that stably supplies power and saves power by adjusting the voltage B on the load side to a preset value. Further, the present invention relates to a voltage control system having a plurality of settings and adjusting a voltage supplied from a power supply side to each set voltage.
  • the power supply side supplied by the power association has a voltage drop during power transmission, and power exceeding the ben voltage is supplied to consumers.
  • the voltage ⁇ is used when more voltage is supplied than the reference voltage
  • the amount of current flowing through the device increases, consuming more power than necessary. Therefore, a voltage control device that reduces the power supply ⁇ j ⁇ ffi to an appropriate set voltage by a transformer and supplies the voltage to the consumer as a load side has been used more and more.
  • a control device of the above-mentioned ⁇ there is one disclosed in Japanese Patent Application Laid-Open No. 8-250506, which is shown in FIG. 15 as an overall circuit configuration diagram.
  • the control device performs power saving by supplying the power supply from the power source side 120, which has been stepped down by the autotransformer 100, to the load side 110, and the setting circuit 105.
  • the control circuit 102 causes the reciter 107 to switch the tap of the autotransformer 100, and to pass the autotransformer 100 on. And supply the grapes voltage to the load side 110, and the load circuit 110 4 and the 3 ⁇ 4J £ detection circuit 1 0 3 detected by the electric circuit circuit 104 and 3 ⁇ 4J £ detection circuit 103 just before the shortage.
  • the value and the current value are stored in the storage circuit 106, and the power saving operation is performed again when the power shortage recovery state is restored.
  • Wei's voltage controller Since it was configured as above, in order to match the set miH, if the measured voltage does not match the set voltage, stop immediately or for a certain period of time. It controls the switching of evening lights when it is not necessary, and often switches evening lights when it is not necessary.It has the advantage of being able to supply a very stable and constant power and not being able to obtain sufficient power saving effects. Was.
  • the other voltage control device since the other voltage control device is configured as described above, the voltage supplied from the power supply via the main circuit is stepped down to the set value, and the voltage which has been uniformly reduced is supplied via the branch circuit. Power supply is controlled based on one set voltage, and a sufficient power-saving effect can be obtained, despite the fact that many types of loads are connected to the branch circuit and each decoration is different. There is a problem that there is no.
  • the present invention has been made in order to eliminate dislikes, and it is unnecessary to suppress the switching of the t-up, to provide a very stable and constant mffi, and to obtain sufficient comfort.
  • the purpose is to test the TO control device.
  • Another object of the present invention is to provide a voltage control device that supplies a voltage corresponding to each of the loads connected to the branch circuit and that can obtain a sufficient power saving effect.
  • the voltage control device is provided in a premises of a customer to which a voltage is supplied via a distribution line, and changes an autotransformer that supplies a self-supply based on a predetermined winding ratio. Detects and measures at least one of the power supply side and the load side of the Kamaki autotransformer. ® Outputs as £. ® E detection means. Supplied to the customer side via a distribution line. The maximum value and the minimum value in the period are detected, and the load-side voltage is adjusted to the auto-transformer so as to match a set value lower than the minimum value and higher than the rated voltage of the load of the customer. And control crane means for controlling.
  • the disgusting control calculating means controls the switching of the auto-transformer so that the load-side voltage matches the set value from the measured voltage detected by the kamami voltage detecting means and the set value.
  • a stable voltage can be supplied very close to the value, and power consumption can be reduced in proportion to the stepped-down voltage.
  • the voltage control device receives the measurement 3 ⁇ 4J £ from the self-detection means as needed, compares the measured voltage with a lower limit value that is equal to or higher than the voltage and set to a maximum value, When the value falls below the lower limit, the distribution line separates the auto-transformer, and monitoring means is provided for controlling the power supply side current of the distribution line so as to directly supply it to the customer side.
  • the monitoring means determines that the fiber self-measurement ® E has fallen below the lower limit value: At ⁇ , the step-down of the auto-transformer is stopped, and the original current is supplied directly to the customer side.
  • the tiff self-control operation means controls the smart transformer, thereby preventing a state in which ⁇ does not operate normally due to excessive voltage drop.
  • the voltage control device includes taps to which springs having different numbers of turns are connected
  • the self-control means includes: A set period and tapping of the auto transformer by the control arithmetic means Tap switching control is performed based on the response time, which is a waiting period before judging the execution of switching, in order to make the selfish load side voltage match the set value.
  • the control calculation means reads out the measured voltage by the voltage detection means during ⁇ of the response time which is expressed every time the switch is made, and reads out the measured value and the set value.
  • the switching of the autotransformer is controlled according to the installation environment, so that the switching of the autotransformer with high switching to the evening has a short response time, and the switching of the autotransformer with low switching to the tap with low switching By setting a long response time, it is possible to control the tap switching of the auto transformer according to the key of the tap, and to obtain the power saving effect corresponding to the fiber.
  • the self-control control operation means includes a set value within a range, and sets a desired range based on an allowable range set to an allowable width and a measured voltage.
  • the response time is determined, and taps are switched based on the determined response time.
  • the control calculation means reads the measured voltage for a predetermined time from the detection means, and decorates the voltage outside the allowable range during the measurement within the conversion time: ⁇ , within the allowable range. Since the response period is determined as the period determined from the period of the measured voltage, the response time for each evening is automatically set, and it is difficult to shorten the conduction ⁇ 3 ⁇ 4. However, it can save the maintenance work every time the introduced fiber changes.
  • the self-control arithmetic means includes the set value in the range and the measured voltage deviates from the limit range set to the essential voltage width on the load side.
  • the auto-transformer switching is performed.
  • the Ml self-control operation means inserts the tap of the autotransformer without being based on the response time when the self-control calculation means detects the outside of the self-restricted range. As soon as a measurement voltage outside the self-limit range is detected, the voltage can be changed to a load-side voltage within the limit range. If the applied voltage slightly exceeds the limit range, it will be possible to provide a stable supply in the difficulties of using electricity ⁇ , etc., which will cause failure and magnetic members immediately.
  • the self-control calculation means may include a pre-test and a z- or new-measurement ffi at the time when the leakage measurement voltage falls within the range of 3 ⁇ 4.
  • the control of auto-transformer switchover is performed based on the direction information.
  • the automatic transformer is switched based on the tendency of the measured voltage before and / or after the measured voltage falls within a predetermined range, the past measurement is performed. It is possible to predict the change of the current measurement from the ® of »£, and it is possible to control the voltage to be set before the specified range is reached, so that extremely stable power saving can be achieved.
  • the voltage control device ⁇ iK may determine that the measured voltage has a range: ⁇ indicates the prior voltage and the measured voltage of Z or barley. It controls the tap switching of the auto transformer based on the information and the measured voltage for a predetermined time at the present time.
  • the control operation means performs the switching control of the tap of the autotransformer by comparing the measured voltage for a predetermined time at the present time with the tin self tendency information. Before the load control of JB falls, the voltage at the load side within the range can be supplied by changing the setting.
  • the tendency information includes a fluctuation cycle and / or a change rate obtained from a measured voltage before and / or after the deviation from the range. Things.
  • the change rate and ⁇ or the fluctuation period which are comparatively weak are derived from the Kamachi measurement ⁇ and are used as elements of the trend information
  • the disgusting control calculation means converts the Kamachi tendency information into the change rate and ⁇ . Or it can be compared in terms of listening to the fluctuation cycle.
  • the Kamaki autotransformer may have at least a difference between the fc, ttf own maximum value and the ⁇ direct value and / or the tif! BM low value and the set value. It can reduce the voltage difference.
  • the auto-transformer since the auto-transformer can reduce the voltage from at least the t & l maximum value to the set value and / or from the tB low value to the set value, at least and / or Therefore, stable power supply can be achieved by reducing the number of times the auto transformer taps are switched so that a power saving effect can be obtained.
  • the voltage control system according to the present invention is provided with a negative control device in a branch circuit in which a main circuit of a customer who receives power supply from the grapes is branched into a plurality of branches.
  • a negative control device in a branch circuit in which a main circuit of a customer who receives power supply from the grapes is branched into a plurality of branches.
  • the voltage control system includes, as necessary, a total control unit that controls the touch voltage control device.
  • the control of the total control unit has priority over the control.
  • the total control unit that controls the voltage control device is provided for each of the disgusting branch circuits, and the control of the total control unit is given priority over the control of the voltage control device. Since the processing is given priority over the control calculation means of the control device and the setting value can also be changed, it is possible to output a small mm according to the load, and it is possible to appropriately concentrate on the total control unit.
  • the apparatus is provided with a total control unit for controlling the control device without providing control arithmetic means in the device.
  • the control device for the eccentric branching circuit is provided with a total control unit without providing control arithmetic means, and the voltage control device is controlled by the! Control unit.
  • the voltage control devices can be manufactured at low cost and easily because each voltage control device has no control calculation means.
  • FIG. 1 is an overall block diagram of a (1) control device according to a first male form of the present invention.
  • FIG. 2 is a correlation diagram between the tap of the autotransformer, the response time, and the lower voltage in the voltage control device according to the first embodiment of the present invention.
  • FIG. 3 is a flowchart showing the entire operation of the control device according to the first male embodiment of the present invention.
  • FIG. 4 is a flowchart of the voltage step-down process of the voltage control device according to the first embodiment of the present invention.
  • FIG. 5 is an ascending flow chart of the loading control device according to the first embodiment of the present invention.
  • FIG. 6 is a flowchart for bypass processing of the mffi control device according to the first difficult mode of the present invention.
  • FIG. 7 is an operation flowchart of the ttffi control device according to the second difficult mode of the present invention.
  • FIG. 8 is a correlation diagram between the measurement information and the cycle period in the 3 ⁇ 4J £ control device according to the second embodiment of the present invention.
  • FIG. 9 is an operation flowchart of the control device according to the third difficult mode of the present invention.
  • FIG. 10 is an overall block diagram of the voltage control system according to the fourth embodiment of the present invention.
  • FIG. 11 is an overall block configuration diagram of a voltage control device according to a fourth embodiment of the present invention.
  • FIG. 12 is an overall block diagram of the voltage control system according to the fifth difficult mode of the present invention.
  • FIG. 13 shows an autotransformer using the average change rate and one of the change rates as elements of the trend information when the allowable range is increased in the control device according to another difficult embodiment of the present invention.
  • FIG. 9 is an operation explanatory diagram showing the switching of.
  • FIG. 14 is an overall block diagram of a voltage control device according to another embodiment of the present invention.
  • FIG. 15 is an overall circuit configuration diagram of this fine control device.
  • FIGS. Fig. 1 Overall block diagram of ⁇ ffi control device according to the embodiment
  • Fig. 2 Correlation diagram between the tap of the autotransformer and the response time and the drop value in the voltage control device
  • FIG. 3 is an overall operation flowchart of the voltage control device according to the present embodiment
  • FIG. 4 is a flowchart of the voltage control device according to the present embodiment.
  • FIG. 5 shows a step-down processing flow chart
  • FIG. 5 shows a flow chart of a voltage control apparatus according to the present embodiment
  • FIG. 6 shows a bypass processing flow chart of the control apparatus according to the difficult embodiment.
  • the voltage control device is disposed in the premises of the customer who is supplied via the distribution line, and ⁇ J is supplied based on a predetermined fountain ratio.
  • Auto-transformer 1 and the maximum and minimum values of ttE supplied to the customer side via the distribution line during the period are detected, and are lower than the minimum value and higher than the ⁇ & voltage of the load of the customer.
  • Data recording means 21 for storing the set value V s and other set values set immediately after M, and voltage detecting means 22 for detecting a voltage from the load side of the autotransformer 1 as a measured value.
  • the control operation means 23 that controls the Kamaki autotransformer 1 so that the Kamaki load transformer matches the set value, and the measured voltage has fallen below the lower limit: ⁇ And a bypass means 24 for cutting and bypassing.
  • the disgusting autotransformer 1 is composed of coils of different fibers, each of which has a tough degree on each coil, and reduces the ffi supplied from the supply side by switching the tap using the thyristor 4.
  • the step-down value for each tap can be set by changing the turns ratio by 3 ⁇ 4M.
  • the set values of the disgusting and the other are the lower limit ⁇ Vc which is set to be equal to or higher than the rated voltage of the disgusting load and less than the set value, the period set for each switching of the tough, and the control means 23.
  • ⁇ Vc which is set to be equal to or higher than the rated voltage of the disgusting load and less than the set value, the period set for each switching of the tough, and the control means 23.
  • the disgust response time ta1, ⁇ , ta5, tb1, ⁇ , tb5 can be set each time the tap is switched, and as shown in FIG. (Switch to the one with a larger voltage drop than at the present time.) 'It is possible to set by tripping (switching the tap to the one with a smaller voltage drop than at the present time).
  • Increase response time :! ⁇ It depends greatly on the consumer's fiber. For example, it is difficult to use the electric power me that consumes s power in a short time, and by setting the « ⁇ response time much longer than the ⁇ transposition time, The control of the voltage control device is not performed during the use time of the electric ⁇ , and the operation becomes possible while maintaining a sufficient voltage. Conversely, if it is difficult to use precise ⁇ , by shortening the response time, a stable voltage supply will be performed, and it will be possible to prevent the occurrence of ⁇ failure due to.
  • the control calculation means 23 compares the measurement detected by the voltage detection means 22 with the set value, and turns on the input when the measured voltage is higher than the set value, and trips when the measured voltage is lower than the set value. Move the value so that the load side changes to 3 ⁇ 4.
  • the measured voltage is compared with the measured voltage and the lower limit value has become less than the lower limit, it intends normal Hffi 1 operations to bypass cut the connection to the autotransformer 1.
  • the operation of the control device according to the present embodiment is repeatedly executed simultaneously with the main processing and the main processing, which are the control operations of the autotransformer 1, and the connection to the autotransformer 1 is cut off and supplied from the grapes side. This will be explained separately for the noise path processing that supplies the load to the load side as it is.
  • First, as a male measure the frame supplied to the customer side between Shosho before introduction, and set the value V from the range from the minimum voltage Vmin at the measured voltage before introduction to the rated voltage of the consumer load.
  • the lower limit 3 ⁇ 4EVc is determined from the range from the minimum rating of the load to the set value Vs, and stored in the data recording means 21.
  • the response times ta1,..., Ta5, tb1,..., Tb5, the no-pass start response time Tl, and the bypass release response time T2 are also assigned to the data recording means 21 according to the difficulty in introduction. Also, it is possible to perform more than the difference between ffiVmax and the set value V s, and to change the minimum voltage Vmin and the set value V s at the measured voltage before introduction by switching one tap.
  • Use auto-transformer 1 that can perform the voltage transformation above the difference.
  • the voltage sampling process used in each process below is a process of detecting the load S several times in several ⁇ ⁇ by the voltage detecting means 22 and averaging a plurality of detected loads ⁇ and outputting the average severity. is there.
  • the measured voltage detected by the voltage detecting means 22 is read (step 1), and the measured voltage is compared with the set value Vs by the control means 23 (step 2). If the measured load is determined to be greater than the set value Vs, a step-down process is performed in which the tap of the autotransformer 1 is turned on to reduce the voltage on the load side (step 3). Measurement 3 ⁇ 4 JE was determined to be smaller than the set value Vs: For ⁇ , perform the boosting process to raise the load side voltage by tripping the autotransformer 1 (Step 4). Finally, it is determined whether or not the control fiber is the control fiber by the disgust control arithmetic means 23 (step 5), and the age of the control fiber returns to the self-leakage step 1, and the control and the non-controlling age end the main processing.
  • the detection means 22 obtains an average ⁇ ffi by performing a sloppy 3 ⁇ 4J £ sampling process (step 31), and compares the set value V s with the average voltage (step 31). Step 3 2). If the average is not greater than the set value vs, ⁇ is not processed and the process is terminated. If the average voltage is determined to be greater than the face value Vs, the deduction is applied to ⁇ . Response time corresponding to the currently connected evening tap and the evening tap in the insertion direction
  • step 34 If the elapsed time since the shift to the step-down process is not equal to or longer than the response time, the process returns to step 31 and is equal to or longer than the response time: ⁇ sends a 3 ⁇ 4 ⁇ indication to Cyris 4 (step 34), and the current is Search for the time when the amplitude of the current becomes 0. Perform a cross search (Step 35). When the amplitude of the current becomes 0, use the thyristor 4 to turn on the tap of the autotransformer 1 (Step 3). 3 6).
  • the ghost-boosting process performs nervous-voltage sampling and calculates the average voltage by the voltage detection means 22 (step 41), and compares the set value vs with the average (step 4 2). ). If it is determined that the average voltage is not smaller than the set value V s, the boosting process is terminated without performing any operation, and it is determined that the average ffi is smaller than the set value V s: ⁇ Time The response time for the tough and bow I that is currently connected to the evening tap in the removal direction (For example, if the current tap is tap c in Figure 2, tap b and tap c in the trip direction The response time corresponding to the above is tb2.) It is determined whether or not it is more than the above (step 43).
  • an average voltage is obtained by performing a voltage sampling process (step 11), and the lower limit value and the average voltage are compared and determined (step 12). It is determined that the average voltage is not smaller than the limit value.
  • the i-feed operation is not performed and the bypass process is terminated, and it is determined that the average voltage limit value is smaller than: ⁇
  • the elapsed time since the transition to the bypass process is the bypass start response. It is determined whether the time is equal to or longer than the time T1 (step 13).
  • step 14 If the elapsed time after the bypass process is not shorter than the bypass start response time T1, return to the step 11 and if the age is longer than the nopass start response time T1, use the electronic devices 31 and 32. Cut off the connection to the autotransformer 1 to bypass it, and supply the ⁇ supplied from the grapes to the load as it is (step 14). Next, a voltage sampling process is performed to obtain an average (step 15), and the lower limit value and the average 3 ⁇ 4J £ are compared and determined (step 16).
  • ⁇ indicates that the elapsed time since the tree was larger than the lower limit was bypassed It is determined whether the release response time is longer than T2 (step 17). If the elapsed time does not exceed the bypass release response time T2 in the step 17, the process returns to the step 15, and the ⁇ time has elapsed the bypass release response time T2 or more: ⁇ indicates the electric TO insect device 3 1, 3 2 to stop the bypass and recover from the autotransformer 1 (Step 1 As described above, according to the voltage control apparatus according to the present embodiment, the control operation means 23 is set every time the tap is switched.
  • the average ⁇ ⁇ is obtained by sampling processing, but the control operation can be performed even on the measurement side.
  • FIG. 7 is an operation flowchart of the voltage control device according to the present embodiment
  • FIG. 8 is a correlation diagram between measurement information and a cycle period in the voltage control device according to the present embodiment.
  • the control device according to the first embodiment has the same configuration as the voltage control device according to the first embodiment, and in addition to this configuration, the control operation means 23 includes the set value Vs in the range, and The response time T3 is determined based on the allowable range Va-Vb set for the voltage width and the measurement, and the response time T3 is set to the recording means 21 in the previous period.
  • the operation of the voltage control device according to the present difficult mode is the same as that of the first male embodiment.
  • the voltage control device is repeatedly punctuated at the same time.
  • a process of determining the serious response time T3 on the basis of Va-Vb and performing the process of sending the data to the data recording means 21 is as follows.
  • the data recording means 21 stores the disgusting permissible range Va-Vb and the response time effective range which is the response time T3 at which the control device can operate normally.
  • the obscene control calculating means 23 reads the measurement at a predetermined time from the obscene voltage detecting means 22 as measurement information (step 51), and determines whether or not the allowable range Va-Vb is included in the measured information. (Step 52). If it is determined that there is no voltage outside the allowable range Va—Vb in the measurement information, the process returns to step 51, and if it is determined that there is a voltage outside the allowable range Va—Vb in the measurement information, the measurement is performed. In the information, the period from the end of the allowable range excess period (period exceeding the limit range) shown in Fig. 8 to the next allowable range ⁇ start time is set as a cycle period (see Fig. 8) one after another (step 53).
  • This operation averages one or more periodic periods to calculate an average periodic period (step 54), and determines whether the calculated average periodic period is within the effective response time range (step 55). If the response time is not within the effective range, the process returns to step 51. If the response time is within the effective range, the operation of the main processing is suspended (step 56), and data is recorded with the average period as the response time. ⁇ F to the response time of the means (step 57).
  • the control operation means 23 reads out the measurement for a predetermined time from the detection means 22 ⁇ J £ as measurement information, and sets the allowable range V a ® £: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ It is possible to automatically reduce the response time for each service group, shorten the time between AMs, and eliminate the need for maintenance work every time a new job is changed.
  • FIG. Fig. 9 is an operation flow chart of the control device according to this embodiment.
  • the 3 ⁇ 4E control device has the same configuration as the 3 ⁇ 4j control device according to the second embodiment.
  • the set value 3 and the meridian range & — ⁇ b are included in the range, and the limit range VTa—VTb is set to the required voltage width on the load side.
  • the operation of the voltage control device according to the first embodiment is the same as that of the second difficult mode, and in addition to this operation, the control device 23 is out of the restricted range while holding the mouth at the same time.
  • the tap of the photo transformer 1 is switched regardless of the response time depending on the age at which the measured voltage is read.
  • the limited range VTa-VTb of Kamachi is stored in the data recording means 21 in advance.
  • the nervous measurement voltage is read (step 61), and it is determined whether the measured voltage is outside the limited range VTa-VTb (step 62). If the measurement is in the restricted range VTa-VTb or returns to the obscene step, it is determined whether the measured voltage is larger than the maximum restricted range value that is directly in the ⁇ ⁇ W range in the restricted range VTa-VTb. 6 3) If the age determined that the measurement ffi is greater than the silence limit range value, wait for the suspension of the operation of the main processing (step 64), and instruct the thyristor 4 to indicate ⁇ to obtain a larger step-down value.
  • Step 65 the point at which the current amplitude becomes 0 is heard, and a 0 cross listening is performed (step 66).
  • the autotransformer is used using the thyristor 4. Insert the tap 1 (Step 67).
  • step 63 If it is determined in step 63 that the measured voltage is not larger than the limit value range, the operation of the main processing is stopped (step 68), and the value is reduced to thyris 4 to obtain a smaller step-down value.
  • Disconnect Step 69
  • Step 70 Perform a 0 cross search (Step 70), and when the current amplitude becomes 0,
  • Step 71 The tap of the autotransformer 1 is disengaged using (Step 71).
  • the disgusting control calculating means 23 detects the voltage measured by the voltage detecting means 22 outside the above-mentioned limited range: ⁇ is not based on the response time. Since the tap of the auto-transformer 1 is 3 ⁇ 4 ⁇ . The trip is performed. When the load control ffi outside the self-limited range is detected, the voltage on the load side within the limited range can be increased almost at the same time. In a fiber for baskets, etc., it is possible to supply mm in accordance with the power ⁇ .
  • FIG. 10 is a diagram in which a mm control device according to the difficult bowl form is provided in each branch circuit
  • FIG. 1 is an overall block configuration diagram of the control device according to the iss * embodiment.
  • the mffi control device 201 includes an autotransformer 1, a thyristor 4, and a data recording device, similarly to the voltage control device according to each of the difficult forms.
  • 2 1 detection means 2 2, control arithmetic means 2 3 smm 3 1, 3 2 are configured in common, and main circuit 2 0 2 It is a configuration that is provided every three.
  • the lower limit of the rated voltage of the load is different due to the number of loads to be supplied with power through one branch circuit 203, the lower limit of the rated voltage at the rated voltage of this »: The largest value is set as each lower limit value of each voltage of the branch circuit 203.
  • the operation of the control device according to the present difficulty mode is similar to the operation of the E control device in each of the sickle 3 difficult modes, and operates so as to decrease the voltage of the circuit disposed TT.
  • the TO is controlled by 1 based on each set value which is individually set by each lower limit value.
  • the voltage control device according to the present embodiment since the tt control device 201 is provided for each branch circuit 203, a stable voltage can be supplied to the load, and The voltage is reduced more than necessary, and it can be used for power consumption.
  • this control device 201 is disposed in all branch circuits 203 separated from the main circuit 202 by a voltage of 13 ⁇ 43 ⁇ 4 ", the voltage applied to the main circuit 202 is reduced by the main circuit 202.
  • the voltage applied to each branch circuit 203 is compared with that of the voltage control device that steps down the voltage based on one set value and outputs the voltage based on one set value by a single autotransformer 1 inserted in 02. If the voltage is stepped down and output based on the set voltage of each branch circuit 203 by the autotransformer 1 interposed in correspondence with the circuit 203, a more precise step-down according to the load of the branch circuit 203 As a result, a more reliable and sufficient power saving effect can be obtained as a whole.
  • the main circuit 202 branches into two to form two branch circuits 203.
  • the lower limit value of each ⁇ is 99.5 [V]
  • the set value for this one branch circuit 203 is determined to be 99.8 [ ⁇ ]
  • the other branch circuit 20 The lower limit of the rated value mj £ is 95.0 [v] among the plurality connected to 3, and the set value corresponding to the other branch circuit 3 is determined to be 96.0 [V].
  • the control calculation means 23 can control the gain lance 1 in accordance with the respective set values, and a more sufficient power saving effect can be obtained.
  • FIG. 12 is a block diagram of the overall configuration of the voltage control system according to the present embodiment.
  • the strict control system has a configuration in which a control device 201 is provided for each branch circuit 203 branching from the main circuit 202 as in the same manner as the fourth sickle form.
  • a total control unit that controls the auto transformer 1 of each voltage control device 201 by comparing the detected distance detected by each control device 201 with the set value of each control device 201. 204, and a general description 05 for setting values, a lower limit voltage, unloading, and the like of all the control devices 201.
  • the knitting control unit 204 controls the selfish control] ⁇ , sets the set value of each voltage control device 201 and the set value of the lower limit voltage, etc. to 3 ⁇ 4H.
  • the processing is performed with priority over the processing of the control calculation means 23.
  • each control device 201 operates similarly to the voltage control device 201 according to the fourth embodiment, and in addition to this operation, the total control unit 204 also operates The processing is performed prior to the processing of the control means 23 of the control device 201.
  • the control operation means 23 receives the supply of voltage via the branch circuit 203 by the autotransformer 1 interposed in the branch circuit 203. After the voltage supplied from the power supply side is reduced to a set value determined by the load and supplied to the load, the total control unit 204 controls the individual 3 ⁇ 4] £ control devices 201.
  • the concentration ⁇ of the device 201 can be easily made.
  • a spare control device (not shown) is provided, and the voltage control device 201 of each branch circuit 203 is connected to the spare control device.
  • the total control unit 204 may operate the spare voltage control device as the voltage control device 201 where the failure occurs.
  • the total control unit 204 includes a temperature sensor (not shown) and a temperature sensor (not shown) for detecting the temperature of the auto-transformer 1 and the like for each control device 201.
  • An electric output unit (not shown) for detecting the current of the corresponding branch circuit 203 is provided. 2 (see Fig. 1 or Fig. 11), the jurisdiction can also be specified based on the output information from the J3 ⁇ 4 sensor and the grace department.
  • each voltage control device 201 has the control calculation means 23 and the data recording means 21, but each control device 201 controls the voltage. Without the calculation means 23 and the data storage means 21, the total control unit 204 and the H storage sickle ⁇ 205 can always control each voltage control device 201, and the individual voltage The ability to inexpensively perform M control on the J control device 201
  • the tendency information consisting of ⁇ ffiO was stored in the data recording means 21.
  • the viewing means 24 may compare the measured value with the tendency information for a predetermined period including the time point and remove the bow I of the tap (necessary: ⁇ new to the pass processing) if it is fffi. If the tap is tripped before the load voltage falls below the lower limit (no-pass processing is performed if necessary), the load can always maintain a voltage higher than the lower limit.
  • a voltage in the allowable range Va-Vb was detected: 3 ⁇ 4 indicates a rate of change from the measured voltage in a predetermined period including a time point when the voltage became outside the allowable range Va-Vb. It is calculated and stored in the data recording means 21 as an element of the trend information, and the control means 23 calculates the rate of change and the measured voltage obtained from the measured voltage between the place including the present time, and the rate of change and the measurement of this trend information. Tap can always be compared with ⁇ ⁇ and tripping can be performed on the ⁇ . Power to do. Specifically, based on Fig. 13 I do.
  • FIG. 13 is an operation explanatory diagram showing an average change rate, which is one of the change rates as elements of the trend information, and switching of the auto-transformer 1 using the trend information at the age when the age falls within the allowable range.
  • obscene control calculation means 23 switches obscene autotransformer 1 to step down the negative voltage
  • the inclination which is composed of the voltage measured beforehand at time t 1 [s] and the average change rate obtained from the measured voltage and the average change rate obtained from this measured voltage, is stored in the data recording means 21, and the time Before t 2 [s], the tiffS control calculation means 23 compares the average change rate obtained from the measurement frame and this measurement signal with the trend information to judge ⁇ i, and determines the B temple t 2 [ [s], the self-control arithmetic means 23 switches the tap of the auto transformer 1 to perform step-down.
  • the average rate of change is inverted as the rate of change.However, if the measurement ffi can be approximated to a curve, the slope of the curve can be inverted as the rate of change. It can also be narrowed.
  • the voltage detecting means 25 for detecting the current on the load side and the grapes side and the power output means 25 The detected voltage is provided by current means 26, always or at any time.
  • Current detection means 25 detects the voltage and current, and the detected load-side voltage, current, and voltage are detected.
  • the power supply means 26 can indicate to the user the power obtained by subtracting the load-side power from the load-side electrode, and the user can recognize how much power has been saved. be able to. Furthermore, It is also possible to indicate to the reader which vegetation carbon dioxide emissions could be controlled by the dissipated power.
  • the trend information consisting of the measured voltage in a predetermined period including the time when the voltage becomes outside the limit range VTa-VTb i is recorded. It is stored in the means 21 and the comfort means 24 compares the measured voltage for a predetermined period including the time with this tendency information, and it is also possible to perform tapping and tripping on the ⁇ (surface! ⁇ ). By pulling out the tap by 3 ⁇ 4 ⁇ before falling into the load-side voltage outside the limit range, the load-side voltage can always exceed the voltage within the limit range.
  • an auto-transformer 1 In each of the difficult modes, as shown in Fig. 14, an auto-transformer 1, a thyristor 4, a connection circuit 5, a data recording means 21, a ® detecting means 22, a viewing means 24, etc. It is also possible to provide a condition detection means 27 for detecting the failure of each device and the stage and the time of replacement. It is capable of giving notice to the effect. this:!
  • a communication means 28 is further provided, so that the person who carries out the present control device is located at a remote location.
  • the communication means 28 can be used for various types of recite, for example, a public telephone line, a private telephone line or the like, or a wireless telephone line or the like.
  • the self-control device sets the load side to the set value Vs based on the measurement detected by the Ml self-JE detection device and the set value Vs so that the three-year-old totora is controlled. Since the switching control is performed, the stable voltage can be supplied very close to the set value Vs, and the shelf power can be saved in strict proportion to the step-down.
  • the sickle 3 monitoring means has an obscene measurement ttffi below the lower limit:! ⁇
  • the selfish control arithmetic means controls the smart transformer, resulting in a ⁇ £ »decrease ⁇ This has the effect of preventing a state in which the device does not operate normally.
  • the control operation means reads out the measured ttffi by the voltage detection means during the response time set for each tap change, and controls the auto-transformer switching from the rated voltage and the set value.
  • switching to the tap of the auto-transformer with a high switching key has a short response time
  • switching to the auto-transformer with low switching time has a long response time.
  • the tap switching control of the auto transformer can be performed in accordance with the ⁇ of the sunset, and the power saving effect can be obtained according to the difficulty.
  • the control calculation means reads out the measurement voltage for a predetermined time from the detection means, and indicates a value outside the allowable range in the measurement voltage within the predetermined time: ⁇ , the measurement within the allowable range Since the response time is determined as the response period determined from the period, the response time for each evening can be set automatically, shortening the leadership period, This has the effect of eliminating the need for maintenance every time a change occurs. Also, in the present invention, when the folly control calculation means detects a voltage measured by the detection means outside the fool restriction range, the tap of the autotransformer is turned on and the bow I is removed without depending on the response time. When the measured voltage outside the limit range is detected, the load side voltage within the limit range can be set at about the same time, and it can be supplied. This has the effect of providing a stable supply of bells that shelf generated electricity and ⁇ .
  • the tap of the auto transformer is switched based on the tendency information including the measurement 1 before and after the measurement of the predetermined range, and therefore, the current of the measurement voltage from the past is measured. This makes it possible to predict the change in the measurement, and it is possible to control so as to ffit the setting before setting the predetermined range. This has the effect of providing an extremely stable power-saving power supply.
  • the apathetic control calculating means controls the switching of the tap of the autotransformer by comparing the measured voltage for a predetermined time at the present time with the apathetic tendency information, Before falling into the load-side voltage, the variable pressure r by switching the taps is obtained, and the load-side ffi within the range can be supplied in a delicate manner.
  • the obscene control calculation means converts the obscene tendency information into the rates of change and This can be compared with the Z or the dynamic data of the fluctuation period, and has an effect that the tap switching of the auto lance can be controlled with high accuracy with little mistake.
  • At least the auto-transformer can perform step-down from at least the above-mentioned high value to the set value and from Z or the minimum value to the set value.
  • the £ 1 £ control device since the £ 1 £ control device is provided in an unpleasant branch circuit, a plurality of set values can be set in the branch circuit in accordance with various kinds of loads applied to each main circuit. , It is possible to apply a small voltage according to the load and to obtain a sufficient power saving effect.
  • the total control unit is provided with a total control unit that controls the ME control device in an unpleasant manner, and the control of the total control unit is prioritized over the control of the voltage control device.
  • ⁇ Processing takes precedence over the control operation means of the control device, and furthermore, setting values can be changed, so it is possible to output jllE HJ £ according to the load, and to concentrate on the overall control unit. Can be done.
  • the ttffi control device of the Kama-Ki bifurcation is provided with a total control unit without providing control arithmetic means, and the control device is controlled by the control unit.
  • each ffi control unit has no control calculation means, so it is possible to inexpensively and easily implement the ME control unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

La présente invention concerne un gradateur de tension qui permet de fournir une tension stable et d'économiser de l'énergie en réglant la valeur de tension d'une tension de régulation de charge à une valeur prédéterminée. Le gradateur de tension de l'invention : commande un autotransformateur (1) par commutation de façon que des moyens de commande de régulation (23) peuvent régler la tension du côté charge afin qu'elle coïncide avec une valeur fixée par une tension mesurée et avec une valeur fixée détectée par des moyens de détection de tension (22) ; et fournit de la sorte une tension stable très proche de la valeur fixée, permettant d'économiser de l'énergie proportionnellement à une tension abaissée.
PCT/JP2002/012457 2001-11-28 2002-11-28 Gradateur de tension WO2003047065A1 (fr)

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JP2001363384 2001-11-28
JP2001-363384 2001-11-28

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WO2003047065A1 true WO2003047065A1 (fr) 2003-06-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009505616A (ja) * 2005-08-10 2009-02-05 エネジェティクス ボルテージ コントロール リミテッド 電圧安定化装置
JP2016032428A (ja) * 2014-07-29 2016-03-07 ゼネラル・エレクトリック・カンパニイ 電力配電回路網を制御するためのシステムおよび方法
CN107820586A (zh) * 2016-11-02 2018-03-20 苏州梦尔端电气科技有限公司 稳压装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08255026A (ja) * 1995-03-17 1996-10-01 Kawamura Electric Inc 節電装置
JP2000163139A (ja) * 1998-11-26 2000-06-16 Kawamura Electric Inc タップ切換式節電装置
JP2001178135A (ja) * 1999-12-14 2001-06-29 Kawamura Electric Inc 節電装置
JP2001314033A (ja) * 2000-04-28 2001-11-09 Kawamura Electric Inc 節電装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08255026A (ja) * 1995-03-17 1996-10-01 Kawamura Electric Inc 節電装置
JP2000163139A (ja) * 1998-11-26 2000-06-16 Kawamura Electric Inc タップ切換式節電装置
JP2001178135A (ja) * 1999-12-14 2001-06-29 Kawamura Electric Inc 節電装置
JP2001314033A (ja) * 2000-04-28 2001-11-09 Kawamura Electric Inc 節電装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009505616A (ja) * 2005-08-10 2009-02-05 エネジェティクス ボルテージ コントロール リミテッド 電圧安定化装置
JP4866906B2 (ja) * 2005-08-10 2012-02-01 ブイフェーズ スマート エネルギー リミテッド 電圧安定化装置
JP2016032428A (ja) * 2014-07-29 2016-03-07 ゼネラル・エレクトリック・カンパニイ 電力配電回路網を制御するためのシステムおよび方法
CN107820586A (zh) * 2016-11-02 2018-03-20 苏州梦尔端电气科技有限公司 稳压装置
WO2018083761A1 (fr) * 2016-11-02 2018-05-11 和一 井上 Dispositif de stabilisation de tension
CN107820586B (zh) * 2016-11-02 2019-11-19 杨晓丹 稳压装置

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