CN116260154B - Phase modulation unit control method, device and system - Google Patents
Phase modulation unit control method, device and system Download PDFInfo
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- CN116260154B CN116260154B CN202310526431.0A CN202310526431A CN116260154B CN 116260154 B CN116260154 B CN 116260154B CN 202310526431 A CN202310526431 A CN 202310526431A CN 116260154 B CN116260154 B CN 116260154B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1885—Arrangements for adjusting, eliminating or compensating reactive power in networks using rotating means, e.g. synchronous generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—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
Abstract
The application provides a phase modulation unit control method, a phase modulation unit control device and a phase modulation unit control system, wherein the phase modulation unit control method comprises the following steps: monitoring whether the voltage of the power grid is in a preset normal voltage range, if so, receiving a reactive power regulation instruction of an automatic voltage control master station, wherein the reactive power regulation instruction comprises: the desired output reactive power; according to the expected output reactive power, controlling the reactive power output by each current automatic regulation state of the target phase modulation unit, wherein the target phase modulation unit is connected with a power grid; and monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, adjusting the terminal voltage of each current automatic adjusting state of the cameras so that the power grid voltage is in the preset normal voltage range. The application can realize the cooperative control of a plurality of cameras, thereby ensuring the safe operation of the power grid.
Description
Technical Field
The application relates to the technical field of electricians, in particular to a method, a device and a system for controlling a phase modulation unit.
Background
With the increasing capacity of new energy sources such as wind power, photovoltaic and the like which are integrated into a power grid, the intermittence and randomness based on the new energy sources are strong, the power supply structure of the power grid is greatly changed, and the situation that the voltage disturbance amplitude and the frequency of the power grid are increased year by year can be found according to the statistical data of the power grid in a certain area.
In order to reduce the voltage frequency fluctuation of the power grid, a plurality of phase modulation units are built at the power supply and receiving ends of the power grid, and the phase modulation units can be called as a phase modulation unit group. At present, the control of the phase modulation unit is generally regulated based on a solidified device, the solidified device is generally provided with one phase modulation unit, and the control strategy is stiff and not easy to modify; the solidification control of a single phase-modulating machine is difficult to carry out cooperative control of a plurality of phase-modulating machines in the phase-modulating machine group, and the safe operation of a large power grid cannot be ensured to the greatest extent.
Disclosure of Invention
Aiming at least one problem in the prior art, the application provides a method, a device and a system for controlling a phase modulation unit, which can realize cooperative control of a plurality of phase modulation units so as to ensure safe operation of a power grid.
In order to solve the technical problems, the application provides the following technical scheme:
in a first aspect, the present application provides a method for controlling a phase modulation unit, including:
monitoring whether the voltage of the power grid is in a preset normal voltage range, if so, receiving a reactive power regulation instruction of an automatic voltage control master station, wherein the reactive power regulation instruction comprises: the desired output reactive power;
according to the expected output reactive power, controlling the reactive power output by each current automatic regulation state of the target phase modulation unit, wherein the target phase modulation unit is connected with a power grid;
and monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, adjusting the terminal voltage of each current automatic adjusting state of the cameras so that the power grid voltage is in the preset normal voltage range.
Further, each current automatic regulation state of the phase-change machine is further used for monitoring whether the power grid voltage is in a preset fault voltage range, if yes, an excitation system of the current automatic regulation state of the phase-change machine is controlled to regulate reactive power output by the phase-change machine, and therefore the power grid voltage is in the preset normal voltage range.
Further, the controlling, according to the desired output reactive power, the reactive power output by each current phase-regulating device in the target phase-regulating unit in an automatic regulation state, where the target phase-regulating unit is connected to a power grid, includes:
acquiring the total manual output reactive power of a current camera in a manual adjustment state in a target phase modulation unit;
and determining the reactive power to be regulated of each current automatic regulation state of the cameras according to the expected output reactive power and the total manual output reactive power, and controlling the reactive power output by each current automatic regulation state of the cameras to be regulated.
Further, the controlling, according to the desired output reactive power, the reactive power output by each current phase-regulating device in the target phase-regulating unit in an automatic regulation state, where the target phase-regulating unit is connected to a power grid, includes:
and according to the expected output reactive power, a first controller is applied to perform reactive power regulation on a current automatic regulation state of the cameras in the target phase modulation unit.
Further, the monitoring whether the power grid voltage is within a preset abnormal voltage range, if yes, adjusting the terminal voltage of each current automatic adjusting state of the tuner so that the power grid voltage is within the preset normal voltage range, including:
and monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, regulating the terminal voltage of each current automatic regulating state regulator by using a second controller so that the power grid voltage is in the preset normal voltage range, wherein the outputs of the first controller and the second controller are the same.
In a second aspect, the present application provides a phase modulation unit control apparatus, comprising:
the receiving module is used for monitoring whether the voltage of the power grid is in a preset normal voltage range, if so, the reactive power regulation instruction of the automatic voltage control master station is received, and the reactive power regulation instruction comprises: the desired output reactive power;
the control module is used for controlling the reactive power output by each current phase regulator in an automatic regulation state in the target phase regulator set according to the expected output reactive power, and the target phase regulator set is connected with a power grid;
and the adjusting module is used for monitoring whether the power grid voltage is in a preset abnormal voltage range, and if so, adjusting the terminal voltage of each current automatic adjusting state of the cameras so as to enable the power grid voltage to be in the preset normal voltage range.
Further, each current automatic regulation state of the phase-change machine is further used for monitoring whether the power grid voltage is in a preset fault voltage range, if yes, an excitation system of the current automatic regulation state of the phase-change machine is controlled to regulate reactive power output by the phase-change machine, and therefore the power grid voltage is in the preset normal voltage range.
In a third aspect, the present application provides a phase modulation unit control system comprising:
the phase modulation unit control device and the automatic voltage control master station;
the phase modulation unit control device is connected with the automatic voltage control main station and is also used for being connected with each phase modulation machine in the power grid and the target phase modulation unit respectively;
the automatic voltage control master station is also used for being connected with the power grid, and each current automatic regulating camera is also used for being connected with the power grid.
In a fourth aspect, the present application provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the phase-modulator control method when executing the program.
In a fifth aspect, the present application provides a computer readable storage medium having stored thereon computer instructions that when executed implement the method of controlling a phase modulation unit.
As can be seen from the above technical scheme, the present application provides a method, apparatus and system for controlling a phase modulation unit. Wherein the method comprises the following steps: monitoring whether the voltage of the power grid is in a preset normal voltage range, if so, receiving a reactive power regulation instruction of an automatic voltage control master station, wherein the reactive power regulation instruction comprises: the desired output reactive power; according to the expected output reactive power, controlling the reactive power output by each current automatic regulation state of the target phase modulation unit, wherein the target phase modulation unit is connected with a power grid; monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, regulating the terminal voltage of each current automatic regulating state of the cameras so that the power grid voltage is in the preset normal voltage range, and realizing cooperative control of a plurality of cameras to further ensure safe operation of the power grid; specifically, the voltage fluctuation resisting effect of the power grid on the new energy power supply can be enhanced, the camera group is cooperatively controlled, and the voltage stability of the large power grid is ensured to the greatest extent; the factory-level AVC control scheme of the intelligent control phase modulation unit can ensure that the safety of a large power grid is ensured to the greatest extent through different control modes under different boundary conditions of voltage; through cooperative control of a plurality of phase modulation machines, the phase modulation machine set can be operated in the most economical range to the greatest extent.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for controlling a phase modulation unit in an embodiment of the present application;
FIG. 2 is a flow chart of a method of controlling a phase modulation unit according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a method of controlling a phase modulator set in accordance with an example of the present application;
FIG. 4 is a schematic diagram of a manual and automatic state switching process in an embodiment of the present application;
FIG. 5 is a schematic diagram of a control device for a phase modulation unit according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a phase modulation unit control system in accordance with an embodiment of the present application;
fig. 7 is a schematic block diagram of a system configuration of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions in the present specification better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The synchronous camera is a synchronous motor in a special running state, when the synchronous motor is applied to a power system, the output of reactive power can be automatically increased when the voltage of a power grid is reduced according to the needs of the system, and the reactive power is absorbed when the voltage of the power grid is increased so as to maintain the voltage, improve the stability of the power system and improve the power supply quality of the system. For improving the power factor of the grid and maintaining the voltage level of the grid.
In order to solve the problems in the prior art, the application provides a method, a device and a system for coordinated control of a phase modulation unit, wherein a factory-level control strategy of the phase modulation unit is built on the basis of a distributed control system (Distributed Control System, abbreviated as DCS) platform, the control strategy can be divided into two parts, the first part is a factory-level AVC upper-layer overall control strategy, and the second part is a factory-level automatic voltage control (Automatic Voltage Control, AVC) master station lower-layer load distribution control strategy. The plant level AVC upper layer overall control strategy can be divided into 3 functional areas as shown in fig. 3. The lower load distribution control strategy of the factory-level AVC can be as shown in figure 4, and undisturbed load distribution is carried out by considering the upper limit and the lower limit of single camera adjustment and the hand and automatic states of the single camera adjustment; the system can control a plurality of phase-modulating units simultaneously, can ensure the safe and economic operation of the phase-modulating units to the greatest extent, and can powerfully support the safe operation of a large power grid.
Based on this, in order to realize cooperative control of multiple cameras and further ensure safe operation of a power grid, the embodiment of the application provides a control device of a phase modulation unit, which may be a server or a client device, where the client device may include a smart phone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a Personal Digital Assistant (PDA), a vehicle-mounted device, an intelligent wearable device, and the like. Wherein, intelligent wearing equipment can include intelligent glasses, intelligent wrist-watch and intelligent bracelet etc..
In practical applications, the phase modulation unit control part may be executed on the server side as described above, or all operations may be completed in the client device. Specifically, the selection may be made according to the processing capability of the client device, and restrictions of the use scenario of the user. The application is not limited in this regard. If all operations are performed in the client device, the client device may further include a processor.
The client device may have a communication module (i.e. a communication unit) and may be connected to a remote server in a communication manner, so as to implement data transmission with the server. The server may include a server on the side of the task scheduling center, and in other implementations may include a server of an intermediate platform, such as a server of a third party server platform having a communication link with the task scheduling center server. The server may include a single computer device, a server cluster formed by a plurality of servers, or a server structure of a distributed device.
Any suitable network protocol may be used for communication between the server and the client device, including those not yet developed on the filing date of the present application. The network protocols may include, for example, TCP/IP protocol, UDP/IP protocol, HTTP protocol, HTTPS protocol, etc. Of course, the network protocol may also include, for example, RPC protocol (Remote Procedure Call Protocol ), REST protocol (Representational State Transfer, representational state transfer protocol), etc. used above the above-described protocol.
The following examples are presented in detail.
In order to realize cooperative control of a plurality of cameras and further ensure safe operation of a power grid, the embodiment provides a method for controlling a phase-modulating unit, wherein an execution subject is a phase-modulating unit control device, and the phase-modulating unit control device includes, but is not limited to, a server, and may be a DCS platform, as shown in fig. 1, and the method specifically includes the following contents:
step 101: monitoring whether the voltage of the power grid is in a preset normal voltage range, if so, receiving a reactive power regulation instruction of an automatic voltage control master station, wherein the reactive power regulation instruction comprises: reactive power is desired to be output.
Specifically, the preset normal voltage range can be set according to actual conditions, which is not limited by the present application; the expected output reactive power can be the target output reactive power of the current automatic regulation state of the camera and the current manual regulation state of the camera; the current automatic adjusting state of the phase-adjusting camera and the current manual adjusting state of the phase-adjusting camera can be the phase-adjusting camera which is operated in the target phase-adjusting unit, the grid-connected switch is switched on and the adjusting states are different.
Step 102: and controlling the reactive power output by each current automatic regulation state of the target phase-modulation unit according to the expected output reactive power, wherein the target phase-modulation unit is connected with a power grid.
Specifically, a camera with a unique identification of the camera in the current automatic adjustment state can be obtained from a target phase modulation unit and used as the camera in the current automatic adjustment state; the cameras currently in the auto-adjust state are one or more.
Step 103: and monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, adjusting the terminal voltage of each current automatic adjusting state of the cameras so that the power grid voltage is in the preset normal voltage range.
Specifically, if the grid voltage is within a preset abnormal voltage range, the terminal voltage of each tuner can be adjusted to a fixed value given by a grid call, such as 220V; the preset abnormal voltage range can be set according to actual conditions, and the application is not limited to the preset abnormal voltage range; in order to avoid power grid faults caused by too large power grid voltage fluctuation, the terminal voltage of the camera is preferentially adjusted. The voltage of the power grid itself can vary over a range which is allowed, but also to suppress the trend of the voltage towards poor conditions, it is necessary to first regulate the reactive power by PID1, suppressing the development of this trend. However, if the voltage changes greatly in some fault conditions, the voltage is quickly regulated, i.e., PID2 triggered. If the voltage exceeds the normal range, the excitation system automatically and rapidly acts to quickly pull back the voltage to the maximum extent.
Each current automatic regulation state of the phase-change regulator can also be used for monitoring whether the power grid voltage is in a preset fault voltage range, if so, the excitation system of the current automatic regulation state of the phase-change regulator is controlled to regulate reactive power output by the phase-change regulator, so that the power grid voltage is in the preset normal voltage range.
Specifically, the preset fault voltage range may be set according to actual conditions, which is not limited by the present application; the correspondence relationship among the preset normal voltage range, the preset abnormal voltage range and the preset fault voltage range may be as shown in fig. 3, where the preset normal voltage range is greater than or equal to U3 and less than U2; the preset abnormal voltage range is greater than or equal to U4 and less than U3, or greater than or equal to U2 and less than U1; the preset fault voltage range is greater than or equal to U1 or less than U4; the inside of the excitation system also comprises a PID regulator, so that reactive power is regulated by regulating excitation current; if the power grid voltage fails, a plurality of cameras can act simultaneously, and the solid coordination control is realized.
As can be seen from the above description, the method for controlling a phase modulation unit provided by the present embodiment can solve the problem that in the prior art, flexible modification of a control scheme of a phase modulation unit is difficult, and cooperative control of the phase modulation unit cannot be achieved; the system can control a plurality of phase-modulating units simultaneously, can ensure the safe and economic operation of the phase-modulating units to the greatest extent, and can powerfully support the safe operation of a large power grid.
To further improve the accuracy of coordinated control of the camera, referring to fig. 2, in one embodiment of the present application, step 102 includes:
step 201: and acquiring the total manual output reactive power of the current phase-regulating device in the manual regulation state in the target phase-regulating device.
Specifically, the target phase modulation unit may include a phase modulation unit that is in a manual adjustment state and an automatic adjustment state; the manual adjustment state can indicate that the camera is not automatically controlled by a superior instruction temporarily, and the instruction of the camera is manually given by an operator.
Step 202: and determining the reactive power to be regulated of each current automatic regulation state of the cameras according to the expected output reactive power and the total manual output reactive power, and controlling the reactive power output by each current automatic regulation state of the cameras to be regulated.
Specifically, the camera currently in the auto-adjust state may represent a camera that may be currently controlled by the phase-modulator group control device; the reactive power to be adjusted for each of the cameras currently in an automatically adjusted state may be determined according to the following formula:
(n-n 1 ) ×P self-supporting ＝P Total (S) -（P Hand 1 +P Hand 2 +……+P Hand n1 ）
Wherein n represents the number of cameras, n 1 Indicating the number of cameras currently in manual adjustment state, P Total (S) Indicating a desired output reactive power; p (P) Hand n1 Representing the reactive power currently output by the nth 1 current camera in a manual adjustment state; p (P) Self-supporting Representing the reactive power to be regulated of any of the cameras currently in an automatically regulated state.
To further improve the accuracy of the coordinated control of the camera, in one embodiment of the present application, step 102 includes:
and according to the expected output reactive power, a first controller is applied to perform reactive power regulation on a current automatic regulation state of the cameras in the target phase modulation unit.
Specifically, the first controller may be a proportional-integral-derivative controller in a phase modulation unit control device, for adjusting the reactive power of the phase modulation unit; the second controller may be another proportional-integral-derivative controller in the phase modulation unit control device for adjusting the terminal voltage of the phase modulation unit.
To further improve the accuracy of the coordinated control of the camera, in one embodiment of the present application, step 103 includes:
and monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, regulating the terminal voltage of each current automatic regulating state regulator by using a second controller so that the power grid voltage is in the preset normal voltage range, wherein the outputs of the first controller and the second controller are the same.
In order to further explain the scheme, the application provides an application example of a coordinated control method of a phase modulation unit, which is specifically described as follows:
1) Executing plant-level automatic voltage control (Automatic Voltage Control, AVC) master station upper layer overall control based on a DCS platform; the method specifically comprises the following steps:
(1) when the grid voltage is within the normal range (U 2 ,U 3 ) When the system is used, the DCS platform receives a reactive instruction of the AVC master station, and the PID1 controller performs reactive regulation; at this time, the DCS platform voltage regulation PID2 controller tracks the output value of the PID1 controller.
(2) When the DCS platform detects an abnormal grid voltage, i.e. the grid voltage is below (U 1 ,U 2 ) Or (U) 3 ,U 4 ) When the range is reached, the DCS platform does not receive the command of the AVC master station temporarily and is automatically switched to power grid voltage regulation, and the PID2 controller controls the voltage of the machine end of the regulator so that the voltage enters a normal range; the PID1 controller tracks the output of the PID2 controller at this point.
(3) In the case of failure the voltage isOr->When the system is in an automatic regulation state, the excitation system of the camera automatically acts, and locking information is sent to the DCS platform, so that the DCS platform is prevented from interfering with the action of the excitation system.
2) The lower-layer load distribution control of the master station for executing factory-level automatic voltage control (Automatic Voltage Control, AVC for short) can consider the upper limit and the lower limit of single camera adjustment and the hand and automatic state of the single camera adjustment to perform undisturbed load distribution; the method specifically comprises the following steps:
assuming that one factory-level phase modulation unit has n phase modulation machines, the number of input manual operations is n 1 Then the automatic number n-n is put into 1 The instructions for inputting the automatic camera are as follows: (n-n) 1 ) ×P Self-supporting ＝P Total (S) -（P Hand 1 +P Hand 2 +……+P Hand n1 ）。
As shown in fig. 4, in order to ensure that the output instruction of a certain camera is undisturbed when the camera is switched by hand and automatically, and the output instruction of a single camera can be automatically adjusted as required when the camera is automatic, the paranoid value is P Offset of deflection ＝P Hand with a handle -P Self-supporting 。
For example, assume that the target phase-modulator set includes: the method comprises the steps of setting a camera 1, setting a camera 2, setting a camera 3 and setting a camera 4, wherein the camera 1 and the camera 2 are manually set, the camera 3 and the camera 4 are automatically set, the reactive power currently output by the camera 1 is 50 Mvar, the reactive power currently output by the camera 2 is 100 Mvar, the reactive power currently output by the camera 3 and the camera 4 is 120 Mvar, and the offset value of the camera 1 is 50-120= -70 Mvar, and the offset value of the camera 2 is 100-120= -20 Mvar; if the input of the No. 1 camera is manually adjusted to be automatic, the power of the No. 3 camera and the No. 4 camera is unchanged at the moment of automatic input, and when the deviation of the deviation is started by people, the instructions of other cameras are correspondingly changed, and the principle is that the total instructions of the No. 1 camera, the No. 2 camera, the No. 3 camera and the No. 4 camera are kept unchanged.
Considering the instruction processing of a camera under the accident condition, the following faults can be classified, when a certain camera has emergency jump, the camera is cut into manual operation, and the instruction is tracked to be 0Mvar; when an auxiliary machine fault occurs, the camera is cut into a manual mode, and an instruction is tracked into a specific load according to the size of the auxiliary machine fault, so that the camera is ensured not to jump; in order to ensure that the value of the overall reactive power of the factory level is unchanged, other cameras need to be redistributed.
In order to realize cooperative control of a plurality of cameras and further ensure safe operation of a power grid from a software aspect, the present application provides an embodiment of a phase-modulator control device for realizing all or part of the content in the phase-modulator control method, referring to fig. 5, the phase-modulator control device specifically includes the following contents:
the receiving module 51 is configured to monitor whether the voltage of the power grid is within a preset normal voltage range, and if yes, receive a reactive power adjustment instruction of the automatic voltage control master station, where the reactive power adjustment instruction includes: the desired output reactive power;
the control module 52 is used for controlling the reactive power output by each current automatic regulation state of the target phase modulation unit according to the expected output reactive power, and the target phase modulation unit is connected with a power grid;
and the adjusting module 53 is configured to monitor whether the grid voltage is within a preset abnormal voltage range, and if yes, adjust the terminal voltage of each current automatic adjusting state of the adjusting device so that the grid voltage is within the preset normal voltage range.
Each current automatic regulation state of the phase-change regulator can also be used for monitoring whether the power grid voltage is in a preset fault voltage range, if so, the excitation system of the current automatic regulation state of the phase-change regulator is controlled to regulate reactive power output by the phase-change regulator, so that the power grid voltage is in the preset normal voltage range.
The embodiment of the phase modulation unit control device provided in the present disclosure may be specifically used to execute the processing flow of the embodiment of the phase modulation unit control method, and the functions thereof are not described herein again, and may refer to the detailed description of the embodiment of the phase modulation unit control method.
In order to realize cooperative control of a plurality of phase-modulating units and further ensure safe operation of a power grid, as shown in fig. 6, the application provides an embodiment of a phase-modulating unit control system, which specifically comprises: the phase modulation unit control device DCS and the automatic voltage control AVC master station; the phase modulation unit control device is connected with the automatic voltage control main station and is also used for being connected with each phase modulation machine in the power grid and the target phase modulation unit respectively; the automatic voltage control master station is also used for being connected with the power grid, and each current automatic regulating camera is also used for being connected with the power grid.
Specifically, the phase modulation unit control device and the target phase modulation unit may be in one-to-one correspondence; the automatic voltage control master station can be connected with a plurality of phase modulation unit control devices.
As can be seen from the above description, the method, the device and the system for controlling the phase modulation unit provided by the application can realize cooperative control of a plurality of phase modulation units, thereby ensuring safe operation of a power grid; specifically, the voltage fluctuation resisting effect of the power grid on the new energy power supply can be enhanced, the camera group is cooperatively controlled, and the voltage stability of the large power grid is ensured to the greatest extent; the factory-level AVC control scheme of the intelligent control phase modulation unit can ensure that the safety of a large power grid is ensured to the greatest extent through different control modes under different boundary conditions of voltage; through cooperative control of a plurality of phase modulation machines, the phase modulation machine set can be operated in the most economical range to the greatest extent.
In order to realize cooperative control of a plurality of phase adjusters and further ensure safe operation of a power grid from a hardware aspect, the application provides an embodiment of an electronic device for realizing all or part of contents in a control method of a phase adjuster group, wherein the electronic device specifically comprises the following contents:
a processor (processor), a memory (memory), a communication interface (Communications Interface), and a bus; the processor, the memory and the communication interface complete communication with each other through the bus; the communication interface is used for realizing information transmission between the phase modulation unit control device and related equipment such as a user terminal; the electronic device may be a desktop computer, a tablet computer, a mobile terminal, etc., and the embodiment is not limited thereto. In this embodiment, the electronic device may be implemented with reference to the embodiment for implementing the method for controlling a phase modulation unit and the embodiment for implementing the apparatus for controlling a phase modulation unit, and the contents thereof are incorporated herein, and are not repeated here.
Fig. 7 is a schematic block diagram of a system configuration of an electronic device 9600 according to an embodiment of the present application. As shown in fig. 7, the electronic device 9600 may include a central processor 9100 and a memory 9140; the memory 9140 is coupled to the central processor 9100. Notably, this fig. 7 is exemplary; other types of structures may also be used in addition to or in place of the structures to implement telecommunications functions or other functions.
In one or more embodiments of the application, the phase-modulator block control functions may be integrated into the central processor 9100. The central processor 9100 may be configured to perform the following control:
step 101: monitoring whether the voltage of the power grid is in a preset normal voltage range, if so, receiving a reactive power regulation instruction of an automatic voltage control master station, wherein the reactive power regulation instruction comprises: the desired output reactive power;
step 102: according to the expected output reactive power, controlling the reactive power output by each current automatic regulation state of the target phase modulation unit, wherein the target phase modulation unit is connected with a power grid;
step 103: and monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, adjusting the terminal voltage of each current automatic adjusting state of the cameras so that the power grid voltage is in the preset normal voltage range.
As can be seen from the above description, the electronic device provided by the embodiment of the present application can realize cooperative control of multiple cameras, thereby ensuring safe operation of the power grid.
In another embodiment, the phase-modulator control device may be configured separately from the cpu 9100, for example, the phase-modulator control device may be configured as a chip connected to the cpu 9100, and the phase-modulator control function is implemented by the control of the cpu.
As shown in fig. 7, the electronic device 9600 may further include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is noted that the electronic device 9600 need not include all of the components shown in fig. 7; in addition, the electronic device 9600 may further include components not shown in fig. 7, and reference may be made to the related art.
As shown in fig. 7, the central processor 9100, sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device, which central processor 9100 receives inputs and controls the operation of the various components of the electronic device 9600.
The memory 9140 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory, or other suitable device. The information about failure may be stored, and a program for executing the information may be stored. And the central processor 9100 can execute the program stored in the memory 9140 to realize information storage or processing, and the like.
The input unit 9120 provides input to the central processor 9100. The input unit 9120 is, for example, a key or a touch input device. The power supply 9170 is used to provide power to the electronic device 9600. The display 9160 is used for displaying display objects such as images and characters. The display may be, for example, but not limited to, an LCD display.
The memory 9140 may be a solid state memory such as Read Only Memory (ROM), random Access Memory (RAM), SIM card, etc. But also a memory which holds information even when powered down, can be selectively erased and provided with further data, an example of which is sometimes referred to as EPROM or the like. The memory 9140 may also be some other type of device. The memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application/function storage portion 9142, the application/function storage portion 9142 storing application programs and function programs or a flow for executing operations of the electronic device 9600 by the central processor 9100.
The memory 9140 may also include a data store 9143, the data store 9143 for storing data, such as contacts, digital data, pictures, sounds, and/or any other data used by an electronic device. The driver storage portion 9144 of the memory 9140 may include various drivers of the electronic device for communication functions and/or for performing other functions of the electronic device (e.g., messaging applications, address book applications, etc.).
The communication module 9110 is a transmitter/receiver 9110 that transmits and receives signals via an antenna 9111. A communication module (transmitter/receiver) 9110 is coupled to the central processor 9100 to provide input signals and receive output signals, as in the case of conventional mobile communication terminals.
Based on different communication technologies, a plurality of communication modules 9110, such as a cellular network module, a bluetooth module, and/or a wireless local area network module, etc., may be provided in the same electronic device. The communication module (transmitter/receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide audio output via the speaker 9131 and to receive audio input from the microphone 9132 to implement usual telecommunications functions. The audio processor 9130 can include any suitable buffers, decoders, amplifiers and so forth. In addition, the audio processor 9130 is also coupled to the central processor 9100 so that sound can be recorded locally through the microphone 9132 and sound stored locally can be played through the speaker 9131.
As can be seen from the above description, the electronic device provided by the embodiment of the application can realize cooperative control of a plurality of cameras, thereby ensuring safe operation of the power grid.
An embodiment of the present application also provides a computer-readable storage medium capable of implementing all the steps of the method for controlling a phase-modulator set in the above embodiment, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the computer program implements all the steps of the method for controlling a phase-modulator set in the above embodiment, for example, the processor implements the following steps when executing the computer program:
step 101: monitoring whether the voltage of the power grid is in a preset normal voltage range, if so, receiving a reactive power regulation instruction of an automatic voltage control master station, wherein the reactive power regulation instruction comprises: the desired output reactive power;
step 102: according to the expected output reactive power, controlling the reactive power output by each current automatic regulation state of the target phase modulation unit, wherein the target phase modulation unit is connected with a power grid;
step 103: and monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, adjusting the terminal voltage of each current automatic adjusting state of the cameras so that the power grid voltage is in the preset normal voltage range.
As can be seen from the above description, the computer readable storage medium provided by the embodiments of the present application can realize cooperative control of multiple cameras, so as to ensure safe operation of the power grid.
The embodiments of the method of the present application are described in a progressive manner, and the same and similar parts of the embodiments are all referred to each other, and each embodiment mainly describes differences from other embodiments. For relevance, see the description of the method embodiments.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principles and embodiments of the present application have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (7)
1. The method is characterized in that an execution main body of the method is a phase modulation unit control device, and the phase modulation unit control device comprises: the DCS platform is respectively connected with each camera, and the method comprises the following steps:
monitoring whether the voltage of the power grid is in a preset normal voltage range, if so, receiving a reactive power regulation instruction of an automatic voltage control master station, wherein the reactive power regulation instruction comprises: the desired output reactive power;
according to the expected output reactive power, controlling the reactive power output by each current automatic regulation state of the target phase modulation unit, wherein the target phase modulation unit is connected with a power grid;
monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, adjusting the terminal voltage of each current automatic adjusting state of the cameras so that the power grid voltage is in the preset normal voltage range;
and controlling the reactive power output by each current automatic regulation state of the target phase modulation unit according to the expected output reactive power, wherein the target phase modulation unit is connected with a power grid and comprises:
acquiring the total manual output reactive power of a current camera in a manual adjustment state in a target phase modulation unit;
the reactive power to be adjusted for each of the cameras currently in an automatically adjusted state is determined according to the following formula:
(n-n 1 ) ×P self-supporting ＝P Total (S) -（P Hand 1 +P Hand 2 +……+P Hand n1 ）
Wherein n represents the number of cameras, n 1 Indicating the number of cameras currently in manual adjustment state, P Total (S) Indicating a desired output reactive power; p (P) Hand n1 Representing the reactive power currently output by the nth 1 current camera in a manual adjustment state; p (P) Self-supporting Representing reactive power to be regulated of any current automatic regulating state of the regulator;
controlling the reactive power output by each current automatic regulating state of the regulating camera to be regulated to the reactive power to be regulated;
and controlling the reactive power output by each current automatic regulation state of the target phase modulation unit according to the expected output reactive power, wherein the target phase modulation unit is connected with a power grid and comprises:
according to the expected output reactive power, a first controller is applied to perform reactive power regulation on a current automatic regulation state of a regulator in a target phase modulation unit;
and if yes, the terminal voltage of each current automatic regulating state regulator is regulated so that the power grid voltage is in the preset normal voltage range, including:
and if so, a second controller is used for adjusting the terminal voltage of each current phase regulator in an automatic adjusting state so that the power grid voltage is in the preset normal voltage range, the output of the first controller is the same as that of the second controller, the first controller is one proportional-integral-derivative controller in the phase-modulation unit control device, and the second controller is the other proportional-integral-derivative controller in the phase-modulation unit control device.
2. The method for controlling a phase modulation unit according to claim 1,
and each current automatic regulating state of the phase-change regulator is also used for monitoring whether the power grid voltage is in a preset fault voltage range, and if so, controlling an excitation system of the current automatic regulating state of the phase-change regulator to regulate reactive power output by the phase-change regulator so as to enable the power grid voltage to be in the preset normal voltage range.
3. A phase modulation unit control apparatus, comprising:
the receiving module is used for monitoring whether the voltage of the power grid is in a preset normal voltage range, if so, the reactive power regulation instruction of the automatic voltage control master station is received, and the reactive power regulation instruction comprises: the desired output reactive power;
the control module is used for controlling the reactive power output by each current phase regulator in an automatic regulation state in the target phase regulator set according to the expected output reactive power, and the target phase regulator set is connected with a power grid;
the adjusting module is used for monitoring whether the power grid voltage is in a preset abnormal voltage range, if so, the terminal voltage of each current automatic adjusting state of the adjusting device is adjusted so that the power grid voltage is in the preset normal voltage range;
the control module is specifically used for:
acquiring the total manual output reactive power of a current camera in a manual adjustment state in a target phase modulation unit;
the reactive power to be adjusted for each of the cameras currently in an automatically adjusted state is determined according to the following formula:
(n-n 1 ) ×P self-supporting ＝P Total (S) -（P Hand 1 +P Hand 2 +……+P Hand n1 ）
Wherein n represents the number of cameras, n 1 Indicating the number of cameras currently in manual adjustment state, P Total (S) Indicating a desired output reactive power; p (P) Hand n1 Representing the reactive power currently output by the nth 1 current camera in a manual adjustment state; p (P) Self-supporting Representing reactive power to be regulated of any current automatic regulating state of the regulator;
controlling the reactive power output by each current automatic regulating state of the regulating camera to be regulated to the reactive power to be regulated;
the control module is specifically used for:
according to the expected output reactive power, a first controller is applied to perform reactive power regulation on a current automatic regulation state of a regulator in a target phase modulation unit;
the adjusting module is specifically used for:
and if so, a second controller is used for adjusting the terminal voltage of each current phase regulator in an automatic adjusting state so that the power grid voltage is in the preset normal voltage range, the output of the first controller is the same as that of the second controller, the first controller is one proportional-integral-derivative controller in the phase-modulation unit control device, and the second controller is the other proportional-integral-derivative controller in the phase-modulation unit control device.
4. A phase-modulator block control device according to claim 3, characterized in that,
and each current automatic regulating state of the phase-change regulator is also used for monitoring whether the power grid voltage is in a preset fault voltage range, and if so, controlling an excitation system of the current automatic regulating state of the phase-change regulator to regulate reactive power output by the phase-change regulator so as to enable the power grid voltage to be in the preset normal voltage range.
5. A phase modulation unit control system, comprising:
a phase modulation unit control device and an automatic voltage control master station as claimed in claim 3 or 4;
the phase modulation unit control device is connected with the automatic voltage control main station and is also used for being connected with each phase modulation machine in the power grid and the target phase modulation unit respectively;
the automatic voltage control master station is also used for being connected with the power grid, and each current automatic regulating camera is also used for being connected with the power grid.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the phase-modulator group control method of claim 1 or 2 when executing the program.
7. A computer readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the phase-modulator block control method of claim 1 or 2.
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