Active and reactive power flow allocation system of multi-source system

Abstract

The utility model discloses an active and reactive power flow allocation system of a multi-source system, which comprises a data acquisition assembly, a plurality of power supply nodes, a plurality of load nodes and a plurality of power transmission lines in the multi-source system, wherein the data acquisition assembly is in circuit connection with the plurality of power supply nodes, the plurality of load nodes and the plurality of power transmission lines; the data acquisition module is used for acquiring real-time data of voltage amplitudes, voltage phases, active power and reactive power of corresponding nodes and lines; the central processing assembly is connected with the data acquisition assembly and receives real-time data; a control signal input end of the power adjusting assembly is connected with a control signal output port of the central processing assembly, is also electrically connected with the plurality of power supply nodes, and adjusts active power output and reactive power output of the plurality of power supplies based on a power control instruction of the central processing assembly; the reactive power compensation assemblies are arranged at the load nodes respectively, the control ends of the reactive power compensation assemblies are connected with the central processing assembly, and power factors of the load nodes are adjusted based on power factor control signals of the central processing assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric power control, especially relates to a kind of active, reactive power flow deployment system of multi-source system. BACKGROUND

[0002] In modern electric power system, the application of multi-source system is increasingly widespread, which covers a variety of different types of power sources, such as traditional thermal power generation, hydroelectric power generation, and emerging wind power generation, solar power generation, etc., while connecting a large number of loads with different characteristics.

[0003] Traditional active, reactive power flow deployment system exposes many problems when facing multi-source system. On the one hand, the data acquisition link lacks accuracy, and the ordinary sensors used cannot accurately obtain the real-time data of voltage amplitude, phase, active power and reactive power of each node and line, resulting in a lack of reliable basis for subsequent deployment decisions, which cannot realize efficient allocation of power resources, resulting in high active network loss of the system. On the other hand, the central processing component has limited computing power, and the processing speed of massive data is slow, which cannot generate accurate power control instructions and power factor control signals in time according to real-time data, resulting in slow system response and difficulty in coping with rapidly changing conditions in the power system.

[0004] In addition, in terms of power regulation and reactive power compensation, the traditional components lack effective redundancy design, and once a fault occurs, it will cause the power regulation of power source node and the power factor regulation of load node to be interrupted, which seriously affects the stability and power supply reliability of the power system. The control of intelligent switch is not flexible and reliable enough, and cannot timely respond to the needs of the system to control the on-off of the transmission line, affecting the transmission efficiency of electricity. SUMMARY

[0005] The purpose of the utility model embodiment is to provide a kind of active, reactive power flow deployment system of multi-source system, in the aspect of active power flow deployment, through power regulation component, the active output of each power source is accurately regulated according to instruction, ensure that power supply and load demand are highly matched, effectively reduce unnecessary power transmission loss, improve energy utilization efficiency, while in the aspect of reactive power flow deployment, through reactive power compensation component, accurately act at each load node, dynamically adjust reactive power compensation according to power factor control signal, stabilize voltage level, improve the stability and power quality of power system.

[0006] To solve the above technical problems, the utility model embodiment provides a kind of active, reactive power flow deployment system of multi-source system, comprising:

[0007] a data acquisition component, the data acquisition component comprising: a voltage sensor, a current sensor, and a smart meter, the data acquisition component being respectively connected with a plurality of power source nodes, a plurality of load nodes, and a plurality of power transmission lines in the multi-source system, for collecting real-time data of voltage amplitude, voltage phase, active power, and reactive power of the corresponding nodes and lines;

[0008] a central processing component, the central processing component being connected with the data acquisition component, and receiving the real-time data;

[0009] a power adjustment component, a control signal input end of the power adjustment component being connected with a control signal output port of the central processing component, and the power adjustment component being further connected with the plurality of power source nodes, and adjusting active output and reactive output of the plurality of power sources based on a power control instruction of the central processing component;

[0010] a reactive compensation component, the reactive compensation component being respectively arranged at the plurality of load nodes, a control end of the reactive compensation component being connected with the central processing component, and adjusting power factors of the plurality of load nodes based on a power factor control signal of the central processing component.

[0011] Further, the active and reactive power flow allocation system of the multi-source system further comprises:

[0012] a smart switch array, the smart switch array being connected in series in the power transmission lines;

[0013] a control end of each smart switch in the smart switch array being respectively connected with the central processing component, and controlling on-off of the power transmission lines based on a control signal of the central processing component.

[0014] Further, the smart switch is a vacuum circuit breaker or an SF6 circuit breaker.

[0015] Further, the active and reactive power flow allocation system of the multi-source system further comprises:

[0016] a human-computer interaction terminal, the human-computer interaction terminal being connected with the central processing component through wired or wireless mode, for displaying real-time running state of the system, and receiving manual input instruction.

[0017] Further, the human-computer interaction terminal is a touch display screen, and data interaction is performed with the central processing component through an RS485 communication interface or a Bluetooth wireless communication mode.

[0018] Further, the voltage sensor and the current sensor are respectively connected with the plurality of power transmission lines through electromagnetic coupling circuits.

[0019] Further, the power regulating component is electrically connected with the power supply nodes and regulates power through thyristors and / or IGBT devices.

[0020] Further, the reactive power compensation component comprises a relay or a power electronic switch.

[0021] The relay or the power electronic switch is electrically connected with the central processing component and controls the circuit on-off of the load nodes according to the control signal of the central processing component.

[0022] Further, the power regulating component and the reactive power compensation component are both provided with redundant backup modules.

[0023] The two redundant backup modules are respectively electrically connected with the central processing component and perform state switching based on the fault switching signal of the central processing component, so that the power regulation of the power supply nodes and the power factor regulation of the load nodes are uninterrupted.

[0024] Further, the active and reactive power flow regulation system of the multi-source system further comprises:

[0025] A fault detection component is electrically connected with the power regulating component and the reactive power compensation component and detects the operating state of the power regulating component and the reactive power compensation component.

[0026] The fault detection component is also in data communication with the central processing component and sends the fault detection signal to the central processing component.

[0027] The above technical solutions of the embodiments of the utility model have the following beneficial technical effects:

[0028] 1. By adopting high-precision voltage sensors, current sensors and intelligent electric meters, real-time data of each node and line can be accurately obtained, providing reliable basis for subsequent regulation decision, the central processing component has strong computing power and can quickly process massive data, accurately generate power control instructions and power factor control signals, compared with traditional systems, the response speed of the system to power working condition changes is greatly improved, active network loss of the system is effectively reduced, and efficient allocation of power resources is realized.

[0029] 2. The power regulating component and the reactive power compensation component are provided with redundant backup modules and cooperate with the fault detection component, once the main component fails, the redundant backup modules can be quickly switched under the control of the central processing component, ensuring uninterrupted power regulation of the power supply nodes and power factor regulation of the load nodes, significantly improving the stability and power supply reliability of the power system, and the intelligent switch adopts a vacuum circuit breaker or an SF6 circuit breaker, which is flexible and reliable in control, can timely control the on-off of the power transmission line according to system requirements, and ensures efficient and stable power transmission.

[0030] 3. The human-computer interaction terminal adopts a touch display screen, and performs data interaction with the central processing component through an RS485 communication interface or a Bluetooth wireless communication mode, so that an operator can intuitively and conveniently understand a real-time running state of the system, manual input instruction becomes more efficient, and a condition that a human-computer interaction interface of a traditional system is not friendly is greatly improved, and an operation and maintenance personnel is facilitated to monitor and operate the active and reactive power flow allocation system of the entire multi-source system. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a principle schematic diagram of an active and reactive power flow allocation system of a multi-source system provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model more clear and apparent, the utility model is further described in detail below in combination with specific implementation manners and with reference to the drawings. It should be understood that these descriptions are only exemplary, and are not intended to limit the scope of the utility model. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0033] Please refer to Figure 1 The embodiment of the utility model provides a kind of active and reactive power flow allocation system of multi-source system, comprising: data acquisition component, central processing component, power regulation component and reactive compensation component;Data acquisition component includes: voltage sensor, current sensor and intelligent electric meter, respectively with several power nodes in multi-source system, several load nodes and several transmission lines are circuit connected, for collecting the real-time data of voltage amplitude, voltage phase, active power and reactive power of corresponding node and line;Central processing component is connected with data acquisition component, receives real-time data;Power regulation component control signal input end is connected with the control signal output port of central processing component, also with several power nodes electrically connected, adjusts the active output and reactive output of several power sources based on the power control instruction of central processing component;Reactive compensation component is arranged at several load nodes respectively, and its control end is connected with central processing component, adjusts the power factor of several load nodes based on the power factor control signal of central processing component.

[0034] In a multi-source system, the power supply types are diverse, covering traditional thermal power generation, hydroelectric power generation, and renewable energy power generation such as wind power generation and solar photovoltaic power generation with intermittency and volatility. The output characteristics of these power sources are extremely complex, for example, wind power generation is affected by wind speed and wind direction, solar power generation depends on light intensity and time, and the output regulation of traditional thermal power has certain hysteresis. In the face of such a complex situation, the system realizes the flexible coordination of active and reactive power distribution of each power source node and load node by virtue of its unique architecture and advanced technology.

[0035] The above-mentioned deployment system can flexibly coordinate the active and reactive power distribution of each power source node and load node in the face of the characteristics of multiple power supply types and complex output characteristics in a multi-source system, realizing efficient integration and optimized utilization of multi-source power. Whether in normal operation state or in the face of power fluctuations, faults and other special situations, it can quickly respond to ensure the stable and reasonable distribution of active and reactive power flow, providing comprehensive and fine-grained technical support for the reliable operation of the multi-source power system.

[0036] Among them, the data acquisition component comprehensively collects real-time data of each power source node, load node and transmission line through high-precision voltage sensors, current sensors and smart meters and other devices, accurately captures the output changes of different power sources and the real-time demand fluctuations of the load. These data are quickly transmitted to the central processing component, which can accurately identify the real-time output state of each power source based on the characteristics of different power sources, for example: accurately judge the power fluctuation caused by wind speed change of wind power generation, and the power drop caused by cloud cover of solar power generation.

[0037] The central processing component performs power distribution for each power source and load node based on the preset deployment strategy highly adapted to the characteristics of multi-source power, which is not within the scope of protection of the utility model, and is only used to explain the operating principle of the central processing component. In terms of active power distribution, when the system is in normal operation state, the power regulation component will finely control the active output of each power source according to the power control instructions issued by the central processing component, preferentially call the power source with lower cost and higher stability, such as preferentially allowing solar power generation to meet part of the load demand when the light is sufficient and the load demand is stable, and reasonably distributing the output of thermal power to ensure high matching between power supply and load demand, effectively reducing unnecessary power transmission loss, and greatly improving energy utilization efficiency.

[0038] When encountering power fluctuations, such as sudden strong winds causing wind power to increase significantly, the system can respond quickly. The central processing component immediately adjusts the power control instructions, allowing the power regulation component to control other power sources to appropriately reduce output, while reasonably arranging the transmission and distribution of excess power to avoid the impact of power surpluses on the system. In the event of a fault or other special circumstances, such as a short-circuit fault in a power transmission line, the system quickly cuts off the faulty line through intelligent switches to prevent the fault from spreading. On the other hand, the central processing component quickly re-plans the active power distribution scheme to allow other normally operating power source nodes to increase output, ensuring stable power supply in non-fault areas.

[0039] In reactive power allocation, the reactive power compensation component plays a key role. The reactive power compensation component at each load node precisely and dynamically adjusts the reactive power compensation amount based on the power factor control signal issued by the central processing component. When the power factor of a load node changes, such as when industrial load startup causes an increase in reactive power demand, the reactive power compensation component quickly responds by increasing the reactive power compensation amount to stabilize the voltage level. This not only improves the stability of the power system and effectively prevents voltage fluctuations from damaging equipment, but also improves power quality and ensures the normal and efficient operation of various electrical equipment.

[0040] Further, the active and reactive power flow allocation system of the multi-source system further includes: an intelligent switch array connected in series in the power transmission line; the control end of each intelligent switch in the intelligent switch array is connected to the central processing component, and the on-off of the power transmission line is controlled based on the control signal of the central processing component.

[0041] The intelligent switch array is connected in series in the power transmission line, and the control end of each intelligent switch is closely connected with the central processing component. The central processing component can control the intelligent switch in real time and accurately, and flexibly determine the on-off of the power transmission line according to the real-time running state and power allocation demand of the system. In the normal running state, the role of the intelligent switch array is mainly reflected in the optimization of the power transmission path. The central processing component selects the optimal power transmission path through intelligent switch control according to the output of each power supply node, the real-time demand of the load node and the loss of the power transmission line. For example, when the load rate of a power transmission line is low and the load of another line is close to saturation, the central processing component will issue a control signal to adjust the power distribution through the intelligent switch, and divert part of the power to the line with low load rate, so as to balance the load of each power transmission line, reduce the line loss and improve the transmission efficiency of the entire power system. When the power fluctuates, for example, the wind speed of the wind farm suddenly increases to cause a large increase in power, in addition to the power adjustment component adjusting the output of other power sources, the central processing component detects this power change and instructs the power adjustment component to control other power sources to reduce the output, and quickly judges the carrying capacity of each power transmission line. If part of the power transmission line may be overloaded due to the addition of a large amount of wind power, the central processing component will immediately issue a control signal to disconnect or adjust the connection mode of part of the non-critical power transmission line through the intelligent switch, and safely and efficiently distribute the excess power to other power transmission lines that can bear it, so as to ensure that the power system can still operate stably when facing sudden power fluctuations, and avoid system failure caused by poor power transmission.

[0042] Further, the intelligent switch is a vacuum circuit breaker or an SF6 circuit breaker. The vacuum circuit breaker utilizes the good insulation and arc extinguishing performance of the vacuum environment. Since the vacuum environment has little corrosion, the service life of the vacuum circuit breaker is long, and the maintenance is relatively simple. This can reduce the operation and maintenance cost and downtime for the multi-source power system which needs to operate stably for a long time. The SF6 circuit breaker relies on the excellent insulation and arc extinguishing characteristics of sulfur hexafluoride (SF6) gas. The SF6 circuit breaker has strong breaking capacity and is suitable for high-voltage and large-capacity power transmission lines, and can stably cope with various power changes and sudden situations in the complex power transmission environment of the multi-source system.

[0043] Specifically, the active and reactive power flow allocation system of the multi-source system further includes a human-computer interaction terminal connected with the central processing component through wired or wireless mode, for displaying the real-time running state of the system and receiving manual input instructions.

[0044] The man-machine interaction terminal is connected to the central processing component through wired connection (such as Ethernet, RS485 cable, etc.) or wireless connection (such as Wi-Fi, Bluetooth, etc.). This connection enables the man-machine interaction terminal to obtain various types of data of the system in real time. In terms of displaying the real-time running state of the system, the man-machine interaction terminal can intuitively present the active and reactive power output of each power supply node, the real-time power demand of each load node, and the current, voltage, power loss and other key information of the transmission line. The operation and maintenance personnel can clearly understand the overall running state of the system and timely find potential problems.

[0045] The function of receiving manual input instructions enables the operation personnel to intervene in the running of the system. For example, when the system appears abnormal but the automatic control mechanism cannot properly handle it, the operation and maintenance personnel can input instructions through the man-machine interaction terminal to instruct the central processing component to adjust the working parameters of the power regulation component or control the on-off state of the intelligent switch array, so as to flexibly cope with the complex power running conditions. In summary, the man-machine interaction terminal improves the operability and controllability of the system and enhances the operation and maintenance efficiency and reliability of the entire multi-source system.

[0046] Optionally, the man-machine interaction terminal is a touch display screen, which interacts with the central processing component through an RS485 communication interface or a Bluetooth wireless communication mode.

[0047] Further, the voltage sensor and the current sensor are connected to the plurality of transmission lines through electromagnetic coupling circuits. The voltage sensor and the current sensor are connected to the transmission lines through electromagnetic coupling circuits. Since electromagnetic coupling is used, the sensors are not directly electrically connected to the transmission lines, which realizes electrical isolation and greatly improves the safety of the measurement system, avoiding harm to measurement equipment and personnel caused by high-voltage conduction due to line faults. Electromagnetic coupling connection can accurately and quickly respond to the dynamic changes of current and voltage in the transmission line. Whether it is a small fluctuation during normal operation or a large change under special conditions such as power fluctuation and fault, the corresponding data can be collected in time and accurately. The above real-time data are rapidly transmitted to the central processing component, providing accurate basis for accurate control of the intelligent switch array, reasonable regulation of the power regulation component, and effective operation of the reactive power compensation component, and ensuring stable and efficient operation of the multi-source system.

[0048] Further, the power regulation component is electrically connected to the plurality of power supply nodes and regulates power through thyristors and / or IGBT devices.

[0049] The power regulation component utilizes the characteristics of thyristors and / or IGBT devices to achieve fine power regulation of multiple power supply nodes. Whether maintaining stable power output during normal system operation or facing complex situations such as power fluctuations and load changes, the active and reactive power of the power supply nodes can be adjusted in real time and accurately according to the instructions of the central processing component, ensuring stable operation of the multi-source system and efficient allocation of power.

[0050] Further, the reactive power compensation component includes a relay or a power electronic switch; the relay or the power electronic switch is electrically connected with the central processing component and controls the circuit on-off of the plurality of load nodes according to the control signal of the central processing component.

[0051] The relay or the power electronic switch is electrically connected with the central processing component and cooperates with the real-time operation demand of the system. According to the control signal issued by the central processing component based on the overall active and reactive power flow analysis of the system, the circuit on-off state of the load node is dynamically adjusted to realize accurate control of reactive power compensation. By reasonably adjusting the reactive power, the stable operation of the load node is ensured, the power quality is improved, and the stability and reliability of the entire multi-source system are improved by working with other components in the system.

[0052] Further, the power regulation component and the reactive power compensation component are provided with redundant backup modules; the two redundant backup modules are electrically connected with the central processing component and perform state switching based on the fault switching signal of the central processing component, so that the power regulation of the plurality of power supply nodes and the power factor regulation of the plurality of load nodes are uninterrupted.

[0053] When the power regulation component is working normally, its redundant backup module is in a hot standby state and monitors the operation of the main module at all times. Once the central processing component detects a fault in the power regulation component, such as damage to the thyristor or IGBT device, abnormality of the control circuit, etc., it will immediately issue a fault switching signal. After receiving the signal, the redundant backup module quickly starts and seamlessly takes over the work of the faulty module, continues to accurately regulate the active and reactive power output of each power supply node according to the power control instructions of the central processing component, ensures the stability and continuity of power supply, and avoids the loss of control of the power supply node due to the failure of the power regulation component, which in turn affects the power balance of the entire system.

[0054] The redundant backup module of the reactive power compensation assembly also monitors the operating state of the main module of the reactive power compensation assembly in real time. Once the central processing assembly detects a failure of the reactive power compensation assembly, such as a failure of a relay or a power electronic switch, which cannot normally respond to the control signal to realize the on-off of the load node circuit to adjust the power factor, a failure switching signal is immediately sent. The redundant backup module compensates for the reactive power of the load node according to the power factor control signal of the central processing assembly, maintains the stability of the power factor, ensures the stable operation of the load node, and prevents problems such as voltage fluctuation and equipment damage caused by insufficient reactive power compensation.

[0055] The above two redundant backup modules are closely connected with the central processing assembly. Through efficient fault detection and rapid switching mechanism, it is ensured that the power regulation of a plurality of power supply nodes and the power factor regulation of a plurality of load nodes can continue uninterrupted when the power regulation assembly and the reactive power compensation assembly fail. Not only does it improve the reliability of a single component, but it also greatly enhances the stability and fault tolerance of active and reactive power flow regulation of the entire multi-source system, ensuring reliable operation of the system under various complex conditions.

[0056] Further, the active and reactive power flow regulation system of the multi-source system further comprises: a fault detection assembly electrically connected with the power regulation assembly and the reactive power compensation assembly, respectively, for detecting the operating state of the power regulation assembly and the reactive power compensation assembly; and the fault detection assembly is in data communication with the central processing assembly and sends a fault detection signal to the central processing assembly.

[0057] The fault detection assembly is electrically connected with the power regulation assembly and the reactive power compensation assembly, and comprehensively detects the operation of the two by monitoring circuit parameters, device operating states and other information in real time. For example, for the power regulation assembly, the working temperature, current and voltage of the thyristor and IGBT device can be monitored to determine whether there are abnormal conditions such as overheating, overcurrent and breakdown; for the reactive power compensation assembly, the opening and closing state of the relay or power electronic switch and whether the action response time is normal can be detected.

[0058] The fault detection assembly is in data communication with the central processing assembly, and once a failure of the power regulation assembly or the reactive power compensation assembly is detected, a fault detection signal is sent to the central processing assembly. After receiving the signal, the central processing assembly will immediately start the corresponding response mechanism. If the power regulation assembly fails, the central processing assembly will instruct its redundant backup module to quickly take over the work to ensure uninterrupted power regulation of each power supply node; if the reactive power compensation assembly is abnormal, the central processing assembly will control its redundant backup module to operate to ensure normal power factor regulation of the load node.

[0059] The utility model discloses an active and reactive power flow allocation system of multi-source system, comprising: data acquisition component, central processing component, power regulation component and reactive compensation component, data acquisition component comprises: voltage sensor, current sensor and intelligent electric meter, and data acquisition component is connected with the circuit of several power nodes, several load nodes and several transmission lines in multi-source system respectively, and is used for collecting the real -time data of voltage amplitude, voltage phase, active power and reactive power of corresponding node and line, central processing component is connected with data acquisition component, and receives real -time data, the control signal input end of power regulation component is connected with the control signal output port of central processing component, and also is electrically connected with several power nodes, and the active output and reactive output of several power are regulated based on the power control instruction of central processing component, reactive compensation component is arranged at several load nodes respectively, and the control end of reactive compensation component is connected with central processing component, and the power factor of several load nodes is regulated based on the power factor control signal of central processing component, the above technical scheme has following effect:

[0060] 1. by adopting high-precision voltage sensor, current sensor and intelligent electric meter, can accurately obtain the real-time data of each node and line, provide reliable basis for subsequent allocation decision, central processing component has powerful computing ability, can process mass data quickly, and timely generates accurate power control instruction and power factor control signal, compared with traditional system, greatly improves the response speed of system to power working condition change, can effectively reduce the active network loss of system, realizes the efficient distribution of electric power resources,

[0061] 2. power regulation component and reactive compensation component set up redundancy backup module, and cooperate with fault detection component, once the main component fails, redundancy backup module can rapidly switch under the control of central processing component, ensure that the power regulation of power node and the power factor regulation of load node are uninterrupted, significantly improve the stability and power supply reliability of power system, and the intelligent switch adopts vacuum circuit breaker or SF6 circuit breaker, and control is flexible and reliable, can control transmission line on-off in time according to system demand, guarantees the efficient stability of power transmission,

[0062] 3. man-machine interactive terminal adopts touch display screen, and carries out data interaction with central processing component through RS485 communication interface or bluetooth wireless communication mode, and operating personnel can intuitively and conveniently understand system real-time running state, and manual input instruction also becomes more efficient, greatly improves the unfriendly condition of traditional system man-machine interactive interface, and facilitates the monitoring and operation of operating personnel to the active and reactive power flow allocation system of entire multi-source system.

[0063] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A system for active and reactive power flow dispatching of a multi-source system, characterized in that, It comprises: a data acquisition component, which comprises a voltage sensor, a current sensor and a smart meter, and is respectively connected with a plurality of power supply nodes, a plurality of load nodes and a plurality of power transmission lines in the multi-source system, for collecting real-time data of voltage amplitude, voltage phase, active power and reactive power of the corresponding nodes and lines; a central processing component connected with the data acquisition component and receiving the real-time data; a power regulation component, whose control signal input end is connected with the control signal output port of the central processing component, and is also electrically connected with the plurality of power supply nodes, for regulating the active output and the reactive output of the plurality of power supplies based on the power control instruction of the central processing component; a reactive compensation component arranged at the plurality of load nodes, whose control end is connected with the central processing component, for regulating the power factor of the plurality of load nodes based on the power factor control signal of the central processing component.

2. The active and reactive power flow dispatch system for multi-source system as claimed in claim 1 wherein, It further comprises: a smart switch array connected in series in the power transmission line; the control end of each smart switch in the smart switch array is connected with the central processing component respectively, for controlling the on-off of the power transmission line based on the control signal of the central processing component.

3. The active and reactive power flow regulation system of the multi-source system according to claim 2, wherein the smart switch is a vacuum circuit breaker or an SF6 circuit breaker.

4. The active and reactive power flow dispatch system for multi-source system as claimed in claim 1 wherein, It further comprises: a man-machine interaction terminal connected with the central processing component through wired or wireless mode, for displaying the real-time running state of the system and receiving manual input instructions.

5. The active and reactive power flow regulation system of the multi-source system according to claim 4, wherein the man-machine interaction terminal is a touch display screen, which interacts with the central processing component through an RS485 communication interface or a Bluetooth wireless communication mode.

6. The active and reactive power flow regulation system of the multi-source system according to claim 1, wherein the voltage sensor and the current sensor are respectively connected with the plurality of power transmission lines through electromagnetic coupling circuits.

7. The active and reactive power flow regulation system of the multi-source system according to claim 1, wherein the power regulation component is electrically connected with the plurality of power supply nodes and regulates power through thyristors and / or IGBT devices.

8. The active and reactive power flow regulation system of the multi-source system according to claim 1, wherein the reactive compensation component comprises a relay or a power electronic switch; the relay or the power electronic switch is electrically connected with the central processing component, and controls the on-off of the circuit of the plurality of load nodes according to the control signal of the central processing component.

9. The active and reactive power flow regulation system of the multi-source system according to any one of claims 1-8, wherein the power regulation component and the reactive compensation component are both provided with a redundant backup module; Two said redundant backup modules are electrically connected with the central processing component respectively, and state switching is performed based on a fault switching signal of the central processing component, so that power adjustment of the plurality of power nodes and power factor adjustment of the plurality of load nodes are uninterrupted.

10. The active and reactive power flow dispatch system for multi-source system as claimed in claim 9 wherein, Also comprising: A fault detection component electrically connected with the power adjustment component and the reactive compensation component respectively, and detecting the operating state of the power adjustment component and the reactive compensation component; The fault detection component is also in data communication with the central processing component, and sends a fault detection signal to the central processing component.

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