CN113067346A - Programmable output reactive power compensation device and output control method - Google Patents
Programmable output reactive power compensation device and output control method Download PDFInfo
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- CN113067346A CN113067346A CN202110348104.1A CN202110348104A CN113067346A CN 113067346 A CN113067346 A CN 113067346A CN 202110348104 A CN202110348104 A CN 202110348104A CN 113067346 A CN113067346 A CN 113067346A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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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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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention belongs to the technical field of reactive power compensation devices, and provides a programmable output reactive power compensation device and an output control method, wherein the device comprises: the system comprises a human-computer interaction unit, a processing unit, an output unit, a clock unit, a storage unit, a communication unit, an alarm output unit and a three-phase power signal acquisition unit; the method comprises the following steps: setting node parameter types, the number of the sub-compensation modules and the wiring modes of the sub-compensation modules; setting wiring sequences of different wiring modes, and writing node parameters according to the different wiring sequences; and connecting with different external systems according to different wiring sequences. According to the programmable output reactive power compensation device and the output control method, the adaptability of the reactive power compensation device to an external wiring system is improved through programming control output, the capacity expansion is facilitated, the parameter types of all nodes, the number of the branch compensation modules and the wiring modes of the branch compensation modules can be set according to needs, and the programmable output reactive power compensation device and the output control method are flexible, convenient and high in expandability.
Description
Technical Field
The invention relates to the technical field of reactive power compensation devices, in particular to a programmable output reactive power compensation device and an output control method.
Background
Reactive power has the effect of improving the power factor of the power grid in the power supply system, and achieves the effects of improving the power supply efficiency of the power grid, improving the electric energy quality of the power grid and improving the power supply environment by reducing the loss of the power supply transformer and the transmission line.
The reactive compensation system is an important component in the power supply system, and the reactive compensation device is a core device of the reactive compensation system. At present, reactive power compensation devices are mainly classified into two types, namely a communication type and an external control type. The existing external control type compensation device can not realize the output of a program, the capacity value of each contact can not be freely set, the device has no event storage function, the output can not be adapted to the requirement of a system through the programming control, and the device has great limitation.
Disclosure of Invention
Aiming at the defects in the prior art, the programmable output reactive power compensation device and the output control method provided by the invention improve the adaptability and expandability of the reactive power compensation device to an external wiring system.
In order to solve the technical problems, the invention provides the following technical scheme:
a programmable output reactive compensation device, comprising:
the man-machine interaction unit is used for setting node parameter types, the number of the sub-compensation modules and the wiring modes of the sub-compensation modules;
the processing unit is used for setting wiring sequences of different wiring modes and writing node parameters according to the different wiring sequences;
and the output unit is used for connecting with different external systems according to different wiring sequences.
Further, the human-computer interaction unit comprises:
the node setting unit is used for setting the node parameter type;
the number setting unit is used for setting the number of the division and compensation modules;
and the wiring mode setting unit is used for setting the wiring mode of the division and compensation module.
Further, the processing unit includes:
a single node writing unit for writing a single node parameter according to the wiring number;
and the multi-node setting unit is used for writing a plurality of node parameters in batches according to a plurality of wiring numbers.
Further, still include:
the clock unit is connected with the processing unit and is used for providing a clock calibration function for the processing unit;
the storage unit is connected with the processing unit and is used for storing the node parameters, the number of the sub-compensation modules, the wiring mode of the sub-compensation modules and the node sequence of the sub-compensation modules;
the communication unit is connected with the processing unit and is used for providing a remote communication function for the processing unit;
the alarm output unit is connected with the processing unit and is used for being connected with an alarm or external control equipment;
the three-phase power signal acquisition unit is connected with the processing unit and is used for acquiring voltage signals and current signals in the power transmission line.
Further, the three-phase power signal acquisition unit includes:
the three-phase voltage acquisition unit is used for acquiring voltage signals in the power transmission line;
the three-phase current acquisition unit is used for acquiring current signals in the power transmission line;
and the metering unit is used for receiving and collecting voltage signals and current signals in the power transmission line and carrying out voltage statistics and current statistics.
The invention also provides an output control method of programmable output, which comprises the following steps:
setting node parameter types, the number of the sub-compensation modules and the wiring modes of the sub-compensation modules;
setting wiring sequences of different wiring modes, and writing node parameters according to the different wiring sequences;
and connecting with different external systems according to different wiring sequences.
Further, the step of setting the node parameter type, the number of the sub-complementary modules and the wiring mode of the sub-complementary modules includes:
setting node parameter types;
setting the number of the sub-compensation modules;
and setting the wiring mode of the branch and supplement module.
Further, the step of writing the node parameters according to different wiring orders comprises:
writing single-node parameters according to the wiring number;
and writing a plurality of node parameters in batches according to the plurality of wiring numbers.
Further, still include:
and collecting voltage signals and current signals in the power transmission line.
Further, the collecting the voltage signal and the current signal in the power transmission line comprises:
collecting voltage signals in the power transmission line;
collecting current signals in the power transmission line;
and receiving and collecting voltage signals and current signals in the power transmission line, and performing voltage statistics and current statistics.
According to the technical scheme, the invention has the beneficial effects that: carry out node parameter type through the human-computer interaction unit, divide the wiring mode setting of the number of filling up the module and dividing the module, set up the wiring order of different wiring modes through the processing unit, and control output unit and export with different wiring orders, in order to adapt to different outside wiring systems, export the adaptability that has improved reactive power compensator to outside wiring system through programming control, the dilatation of being convenient for, and can set up the parameter type of each node as required, divide the number of filling up the module and divide the wiring mode of filling up the module, flexibility and convenience, and expandability is strong.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a circuit diagram of a processing unit in the present invention;
FIG. 3 is a circuit diagram of a communication unit of the present invention;
FIG. 4 is a circuit diagram of a three-phase voltage acquisition unit of the present invention;
FIG. 5 is a circuit diagram of a three-phase current acquisition unit according to the present invention;
FIG. 6 is a flow chart of the method of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1 to 5, the present embodiment provides a programmable output reactive power compensation apparatus, which includes a human-computer interaction unit, a processing unit, and an output unit.
The man-machine interaction unit is used for setting node parameter types, the number of the sub-compensation modules and the wiring mode of the sub-compensation modules, the man-machine interaction unit comprises a key button and a dot matrix liquid crystal module, instruction input of the man-machine interaction unit is achieved through the key button, the node parameter types comprise node protection parameters, node channel parameters and the like, the wiring mode of the sub-compensation modules comprises a pure co-compensation mode, a pure sub-compensation mode and a mixed compensation mode, the parameter types of the nodes, the number of the sub-compensation modules and the wiring mode of the sub-compensation modules can be set as required, and the man-machine interaction unit is flexible and convenient.
The processing unit is used for setting wiring sequences of different wiring modes and writing node parameters according to the different wiring sequences, the processing unit adopts an ARM chip of an M3 kernel, and the ARM chip of the M3 kernel has the characteristics of stable performance, large capacity, high processing speed and good expansibility, and is convenient for the function expansion of the reactive power compensation device.
The output unit is used for being connected with different external systems according to different wiring orders, and the output unit adopts opto-coupler output unit and relay contact output unit, and opto-coupler output unit is connected with processing unit's output, and the relay is connected with opto-coupler output unit's output, and opto-coupler output unit and relay contact output unit select for use integrated opto-coupler chip ULN2003A and relay to constitute. When the external system is a pure common compensation system, corresponding to a pure common compensation mode in the processing unit, sequentially wiring from 24 to No. 1 pins of the relay or from No. 24 to No. 1 pins; when the external system is a pure complementary system, corresponding to the pure complementary mode of the processing unit, sequentially connecting the pins from No. 1 to No. 24 or from No. 24 to No. 1 of the relay; when the external system is a mixed compensation system, corresponding to the mixed compensation mode of the processing unit, the wiring sequence of the mixed compensation system is from No. 1 pin to No. 24 pin or from No. 24 pin to No. 1 pin, and the wiring sequence of the sub-compensation system is from No. 24 pin to No. 1 pin or from No. 1 pin to No. 24 pin, so that two ends are simultaneously wired and close to the middle, when the system needs capacity expansion, the original wiring is not required to be removed, and new modules are directly and respectively accessed from the corresponding two ends; when the system needs to reduce the capacity, the two ends are correspondingly removed, so that the capacity is conveniently expanded, the disassembly is not needed, and the wiring is convenient.
In this embodiment, the human-computer interaction unit includes a node setting unit, a number setting unit, and a node mode setting unit.
The node setting unit is used for setting the node parameter type.
The number setting unit is used for setting the number of the division and compensation modules.
The wiring mode setting unit is used for setting the wiring mode of the compensation module.
In this embodiment, the processing unit includes a single-node writing unit and a multi-node setting unit.
The single-node writing unit is used for writing single-node parameters according to the wiring numbers, so that the single-node parameter setting is facilitated;
the multi-node setting unit is used for writing in a plurality of node parameters in batches according to a plurality of wiring numbers, so that multi-node parameter setting is facilitated, and the working efficiency is improved.
In this embodiment, the system further comprises a clock unit, a storage unit, a communication unit, an alarm output unit and a three-phase power signal acquisition unit.
The clock unit is connected with the processing unit and used for providing a clock calibration function for the processing unit, and the clock unit selects an RX8025 clock chip, so that the clock unit has the characteristics of high precision and no temperature drift influence.
The storage unit is connected with the processing unit and is used for storing node parameters, the number of the sub-compensation modules, the wiring mode of the sub-compensation modules and the node sequence of the sub-compensation modules, the storage unit is an FM24CLxx chip, the erasing and writing can be carried out for an unlimited time, data are not easy to lose, memories with different sizes can be selected according to needs, and support is provided for tracing historical data.
The communication unit is connected with the processing unit and used for providing a remote communication function for the processing unit, a communication circuit formed by an SP3485EN chip is selected as the communication unit, a remote monitoring interface is provided, and remote connection with a power distribution network service platform is facilitated.
The alarm output unit is connected with the processing unit and is used for being connected with an alarm or external control equipment, so that the fault early warning capability of the power distribution system is improved.
The three-phase power signal acquisition unit is connected with the processing unit and is used for acquiring voltage signals and current signals in the power transmission line.
In this embodiment, the three-phase power signal acquisition unit includes a three-phase voltage acquisition unit, a three-phase current acquisition unit, and a metering unit.
The three-phase voltage acquisition unit is used for acquiring voltage signals in the power transmission line.
The three-phase current acquisition unit is used for acquiring current signals in the power transmission line.
The metering unit is used for receiving and collecting voltage signals and current signals in the power transmission line and performing voltage statistics and current statistics, the metering unit adopts an RN7302 chip, the sampling precision reaches 0.5S level, the anti-interference performance is strong, and power grid data can be better collected. The clamping diode is used in the circuit, so that the reliability and stability of the circuit are ensured, and the circuit cannot be damaged even under abnormal conditions.
Referring to fig. 6, an output control method of programmable output includes the following steps:
the node parameter types, the number of the sub-compensation modules and the wiring modes of the sub-compensation modules are set, the node parameter types comprise node protection parameters, node channel parameters and the like, the wiring modes of the sub-compensation modules comprise a pure co-compensation mode, a pure sub-compensation mode and a mixed compensation mode, the parameter types of the nodes, the number of the sub-compensation modules and the wiring modes of the sub-compensation modules can be set as required, and the node protection method is flexible and convenient.
And setting the wiring sequence of different wiring modes, and writing the node parameters according to the different wiring sequences, so that the different wiring modes can be conveniently set into different wiring sequences, and the expansibility of the reactive power compensation device is improved.
Connecting with different external systems according to different wiring sequences, and when the external systems are pure complementary systems, sequentially wiring from the 24 to the No. 1 pin of the relay or from the No. 24 pin to the No. 1 pin corresponding to a pure complementary mode; when the external system is a pure complementary system, corresponding to the pure complementary mode, sequentially connecting the pins from No. 1 to No. 24 or from No. 24 to No. 1 of the relay; when the external system is a mixed compensation system, corresponding to the mixed compensation mode, the wiring sequence of the mixed compensation system is from No. 1 pin to No. 24 pin or from No. 24 pin to No. 1 pin, and the wiring sequence of the sub-compensation system is from No. 24 pin to No. 1 pin or from No. 1 pin to No. 24 pin, so that two ends are simultaneously wired and close to the middle, when the system needs capacity expansion, the original wiring is not required to be detached, and new modules are directly and respectively connected from the corresponding two ends; when the system needs to reduce the capacity, the two ends are correspondingly removed, so that the capacity is conveniently expanded, the disassembly is not needed, and the wiring is convenient.
In this embodiment, the step of setting the node parameter type, the number of the sub-complementary modules, and the connection mode of the sub-complementary modules includes:
and setting the node parameter type.
And setting the number of the sub-compensation modules.
And setting the wiring mode of the branch and supplement module.
In this embodiment, the step of writing the node parameters according to different wiring orders includes:
and single-node parameters are written according to the wiring numbers, so that the single-node parameter setting is facilitated.
And a plurality of node parameters are written in batch according to a plurality of wiring numbers, so that multi-node parameter setting is facilitated, and the working efficiency is improved.
In this embodiment, the method further includes:
and collecting voltage signals and current signals in the power transmission line.
In this embodiment, the acquiring the voltage signal and the current signal in the power transmission line includes:
and collecting voltage signals in the power transmission line.
And collecting current signals in the power transmission line.
And voltage signals and current signals in the power transmission line are received and collected, and voltage statistics and current statistics are performed, so that the voltage and the current in the power distribution network system can be conveniently counted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A programmable output reactive compensation device, comprising:
the man-machine interaction unit is used for setting node parameter types, the number of the sub-compensation modules and the wiring modes of the sub-compensation modules;
the processing unit is used for setting wiring sequences of different wiring modes and writing node parameters according to the different wiring sequences;
and the output unit is used for connecting with different external systems according to different wiring sequences.
2. The reactive power compensation device with programmable output according to claim 1, wherein the human-computer interaction unit comprises:
the node setting unit is used for setting the node parameter type;
the number setting unit is used for setting the number of the division and compensation modules;
and the wiring mode setting unit is used for setting the wiring mode of the division and compensation module.
3. A programmable-output reactive compensation device according to claim 2, wherein the processing unit comprises:
a single node writing unit for writing a single node parameter according to the wiring number;
and the multi-node setting unit is used for writing a plurality of node parameters in batches according to a plurality of wiring numbers.
4. A programmable-output reactive compensation device according to claim 1, further comprising:
the clock unit is connected with the processing unit and is used for providing a clock calibration function for the processing unit;
the storage unit is connected with the processing unit and is used for storing the node parameters, the number of the sub-compensation modules, the wiring mode of the sub-compensation modules and the node sequence of the sub-compensation modules;
the communication unit is connected with the processing unit and is used for providing a remote communication function for the processing unit;
the alarm output unit is connected with the processing unit and is used for being connected with an alarm or external control equipment;
the three-phase power signal acquisition unit is connected with the processing unit and is used for acquiring voltage signals and current signals in the power transmission line.
5. The reactive power compensation device with programmable output according to claim 4, wherein the three-phase power signal acquisition unit comprises:
the three-phase voltage acquisition unit is used for acquiring voltage signals in the power transmission line;
the three-phase current acquisition unit is used for acquiring current signals in the power transmission line;
and the metering unit is used for receiving and collecting voltage signals and current signals in the power transmission line and carrying out voltage statistics and current statistics.
6. An output control method of a programmable output, comprising the steps of:
setting node parameter types, the number of the sub-compensation modules and the wiring modes of the sub-compensation modules;
setting wiring sequences of different wiring modes, and writing node parameters according to the different wiring sequences;
and connecting with different external systems according to different wiring sequences.
7. The method of claim 6, wherein the step of setting the node parameter type, the number of the complementary dividing modules and the wiring pattern of the complementary dividing modules comprises:
setting node parameter types;
setting the number of the sub-compensation modules;
and setting the wiring mode of the branch and supplement module.
8. The method of claim 6, wherein the step of writing the node parameters in different wire sequences comprises:
writing single-node parameters according to the wiring number;
and writing a plurality of node parameters in batches according to the plurality of wiring numbers.
9. The method of claim 6, further comprising:
and collecting voltage signals and current signals in the power transmission line.
10. The output control method of a programmable output according to claim 9, wherein the collecting the voltage signal and the current signal in the power transmission line comprises:
collecting voltage signals in the power transmission line;
collecting current signals in the power transmission line;
and receiving and collecting voltage signals and current signals in the power transmission line, and performing voltage statistics and current statistics.
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