Electric energy regulation control circuit for power distribution planning of power grid

Abstract

The invention discloses an electric energy regulation control circuit for power grid distribution planning, and relates to the field of electric energy regulation, and the electric energy regulation control circuit for power grid distribution planning comprises a power distribution module which is used for converting 10KV alternating current on a power supply bus into 380V alternating current for a demand side to use; the first step-down rectifying and filtering module is used for converting 10KV alternating current on the power supply bus into direct current and supplying power to the electric energy charging module; compared with the prior art, the system has the advantages that a battery series power supply structure is arranged for the battery trigger module, when the voltage drop amplitude of a power supply bus is too large, the power shortage trigger module detects a signal and feeds back the signal to the single chip microcomputer, the single chip microcomputer controls battery series connection of the battery trigger module, and it is guaranteed that the supply voltage meets the requirement for electricity utilization of the demand side; the single-chip microcomputer is used for controlling each battery to discharge circularly, so that the service life of the battery is prevented from being shortened due to self-discharge caused by long-term charging.

Description

Technical Field

[0001] The invention relates to the field of electric energy regulation, and in particular to an electric energy regulation control circuit used for power grid distribution planning. Background Art

[0002] In actual electricity consumption, there are peaks and valleys, which requires the planning of power distribution to meet the power demand. Power grid regulation is a comprehensive process with multiple links and multiple means, which requires joint efforts and collaboration from the power supply side, the grid side and the demand side.

[0003] The existing power grid regulates electricity based on the normal power supply of the power supply bus. However, when the voltage of the power supply bus drops too much, the voltage on the demand side is insufficient and cannot meet the electricity demand on the demand side. This needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide an electric energy regulation control circuit for power grid distribution planning to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An electric energy regulation control circuit for power grid distribution planning, comprising: The power distribution module is used to convert the 10KV AC power on the power supply bus into 380V AC power for use on the demand side; The first step-down rectifier and filter module is used to convert the 10KV AC power on the power supply bus into DC power to supply power to the power charging module; The electric energy charging and discharging module is used to introduce the voltage of the first step-down rectifier filter module to charge the battery when the charging switch is turned on; when the discharging switch is turned on, the battery outputs the voltage to the inverter module; when the battery is discharged, it includes a conventional independent discharge mode of each battery and an abnormal battery series discharge mode; An inverter module is used to convert direct current into alternating current and output it to a power distribution module; The second step-down rectifier and filter module is used to convert the AC power (380V) output by the power distribution module to the demand side into DC power, and output it to the sampling feedback module; The sampling feedback module is used to sample the voltage on the demand side, obtain the sampled voltage, and feed it back to the single-chip microcomputer and the power shortage trigger module; The power failure trigger module is used to feed back a signal to the single-chip microcomputer when the sampling voltage is less than the reference voltage. The single-chip microcomputer controls the battery discharge to change from the conventional independent battery discharge mode to the abnormal battery series discharge mode; The first output end of the power distribution module is connected to the input end of the first step-down rectifier and filter module, the second output end of the power distribution module is connected to the input end of the second step-down rectifier and filter module, the output end of the first step-down rectifier and filter module is connected to the input end of the electric energy charging and discharging module, the output end of the electric energy charging and discharging module is connected to the input end of the inverter module, the output end of the inverter module is connected to the input end of the power distribution module, the output end of the second step-down rectifier and filter module is connected to the input end of the sampling feedback module, and the output end of the sampling feedback module is connected to the input end of the power shortage trigger module.

[0006] As a further solution of the present invention: the electric energy charging and discharging module includes: A voltage stabilization unit, used to reduce the fluctuation of the voltage input from the first step-down rectifier and filter module to the battery charging and discharging unit; The battery charging and discharging unit is used for charging the battery through the output voltage of the first step-down rectifier and filter module via the charging switch when the charging switch is turned on; and for transmitting the battery output voltage to the inverter module via the discharging switch when the discharging switch is turned on; and the battery discharging includes a conventional independent discharging mode for each battery and an abnormal battery series discharging mode; The input end of the voltage stabilization unit is connected to the output end of the first step-down rectifier filter module, the output end of the voltage stabilization unit is connected to the input end of the battery charge and discharge unit, and the output end of the battery charge and discharge unit is connected to the input end of the inverter module.

[0007] As a further solution of the present invention: the voltage stabilization unit includes a first resistor and a first capacitor, one end of the first resistor is connected to the output end of the first step-down rectifier and filter module, the other end of the first resistor is connected to one end of the first capacitor and the input end of the battery charge and discharge unit, and the other end of the first capacitor is grounded.

[0008] As a further solution of the present invention: the battery charging and discharging unit includes multiple charging and discharging electronic units, the first end of the middle charging and discharging electronic unit is connected to the second end of the previous charging and discharging electronic unit, the second end of the middle charging and discharging electronic unit is connected to the first end of the next charging and discharging electronic unit, the first end of the first charging and discharging electronic unit is not connected to other charging and discharging electronic units, and the second end of the last charging and discharging electronic unit is not connected to other charging and discharging electronic units.

[0009] As a further solution of the present invention: the charging and discharging electronic unit includes a first metal oxide semiconductor field effect transistor, a first battery, a fourth metal oxide semiconductor field effect transistor, a fifth metal oxide semiconductor field effect transistor, an eighth metal oxide semiconductor field effect transistor, and a first diode, the drain of the first metal oxide semiconductor field effect transistor is connected to the output end of the first step-down rectifier and filter module, the source of the first metal oxide semiconductor field effect transistor is connected to the positive electrode of the first battery and the drain of the eighth metal oxide semiconductor field effect transistor, the negative electrode of the first battery is connected to the drain of the fifth metal oxide semiconductor field effect transistor and the source of the fourth metal oxide semiconductor field effect transistor, and the fifth metal oxide semiconductor field effect transistor is connected to the output end of the first step-down rectifier and filter module. The source of the oxide semiconductor field effect transistor is connected to the first end of the next charging and discharging electronic unit, the drain of the fourth metal oxide semiconductor field effect transistor is grounded, the source of the eighth metal oxide semiconductor field effect transistor is connected to the positive electrode of the first diode, the negative electrode of the first diode is connected to the input end of the inverter module, the gate of the first metal oxide semiconductor field effect transistor, the gate of the fourth metal oxide semiconductor field effect transistor, and the gate of the eighth metal oxide semiconductor field effect transistor are respectively connected to different IO ports of the microcontroller, the gate of the fifth metal oxide semiconductor field effect transistor is connected to the gate of the fourth metal oxide semiconductor field effect transistor, and different charging and discharging electronic units are connected to different IO ports of the microcontroller.

[0010] As a further solution of the present invention: the negative electrode of the last charge-discharge electronic unit battery is grounded through two metal oxide semiconductor field effect transistors, and the two metal oxide semiconductor field effect transistors between the grounding can be removed.

[0011] As a further solution of the present invention: the sampling feedback module includes a second resistor, a second capacitor, a third resistor, and a third capacitor. One end of the second resistor is connected to one end of the second capacitor, one end of the third resistor, the output end of the second step-down rectifier and filter module, and the input end of the power failure trigger module. The other end of the second resistor is grounded, the other end of the second capacitor is grounded, the other end of the third resistor is connected to one end of the third capacitor and an IO port of the single-chip computer, and the other end of the third capacitor is grounded.

[0012] As a further solution of the present invention: the power failure trigger module includes a first amplifier, a second amplifier, a fourth resistor, a fifth resistor, a fourth capacitor, and a fifth capacitor. The inverting end of the first amplifier is connected to the inverting end of the second amplifier and the output end of the sampling feedback module, the non-inverting end of the first amplifier is connected to the first reference voltage, the non-inverting end of the second amplifier is connected to the second reference voltage, the output end of the first amplifier is connected to one end of the fourth resistor, the other end of the fourth resistor is connected to one end of the fourth capacitor and an IO port of the single-chip computer, the other end of the fourth capacitor is grounded, the output end of the second amplifier is connected to one end of the fifth resistor, the other end of the fifth resistor is connected to one end of the fifth capacitor and another IO port of the single-chip computer, and the other end of the fifth capacitor is grounded.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention sets a battery series power supply structure for the battery trigger module. When the power supply bus voltage drops too much, the power shortage trigger module detects the signal and feeds it back to the single-chip microcomputer. The single-chip microcomputer controls the battery series connection of the battery trigger module to ensure that the supply voltage meets the power consumption on the demand side; the single-chip microcomputer controls the cyclic discharge of each battery to avoid the reduction of the service life caused by long-term charging and self-discharge of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of power grid regulation method.

[0015] Figure 2 Schematic diagram of power regulation on the grid side.

[0016] Figure 3 The schematic diagram is a power regulation control circuit for power grid distribution planning.

[0017] Figure 4 The present invention is a circuit diagram of an electric energy regulation control circuit used for power distribution planning of a power grid. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] See also Figure 3 , an electric energy regulation control circuit for power grid distribution planning, comprising: Power distribution module 1 is used to convert the 10KV AC power on the power supply bus into 380V AC power for use on the demand side; The first step-down rectifier and filter module 2 is used to convert the 10KV AC power on the power supply bus into DC power to supply power to the power charging module; The electric energy charging and discharging module 3 is used to introduce the voltage of the first step-down rectifier filter module 2 to charge the battery when the charging switch is turned on; and is used to output the battery voltage to the inverter module 4 when the discharging switch is turned on; the battery discharge includes a conventional independent discharge mode of each battery and an abnormal battery series discharge mode; The inverter module 4 is used to convert direct current into alternating current and output it to the power distribution module 1; The second step-down rectifier and filter module 5 is used to convert the AC power (380V) output by the power distribution module 1 to the demand side into DC power, and output it to the sampling feedback module 6; The sampling feedback module 6 is used to sample the voltage on the demand side, obtain the sampled voltage, and feed it back to the single chip microcomputer and the power shortage trigger module 7; The power failure trigger module 7 is used to feed back a signal to the single chip microcomputer when the sampled voltage is less than the reference voltage, and the single chip microcomputer controls the battery discharge to change from the conventional independent battery discharge mode to the abnormal battery series discharge mode; The first output end of the power distribution module 1 is connected to the input end of the first step-down rectifier and filter module 2, the second output end of the power distribution module 1 is connected to the input end of the second step-down rectifier and filter module 5, the output end of the first step-down rectifier and filter module 2 is connected to the input end of the electric energy charging and discharging module 3, the output end of the electric energy charging and discharging module 3 is connected to the input end of the inverter module 4, the output end of the inverter module 4 is connected to the input end of the power distribution module 1, the output end of the second step-down rectifier and filter module 5 is connected to the input end of the sampling feedback module 6, and the output end of the sampling feedback module 6 is connected to the input end of the power shortage trigger module 7.

[0020] In a specific embodiment: the 10KV AC power on the power supply bus in the distribution module 1 is converted into 380V AC power through a distribution transformer. The first step-down rectifier and filter module 2, the second step-down rectifier and filter module 5, and the inverter module 4 are common circuits and will not be introduced here.

[0021] See also Figure 1 The host computer can change the power supply on the power supply side through the feedback signal to achieve the power regulation of the distribution network; it can also change the energy storage on the grid side through the feedback signal to achieve the power regulation of the distribution network; the power supply side change example: Thermal power plant regulation: Thermal power plants can change the power generation by adjusting the combustion rate of boilers, the steam intake of turbines, etc. to cope with changes in grid load. In addition, coal-fired power units can also be transformed for flexibility to improve peak load regulation and meet the power demand of the grid at different times.

[0022] Hydropower plant regulation: Hydropower plants use the potential energy of water flow to generate electricity, and control the amount of power generated by regulating the water storage capacity and water discharge flow of the reservoir. During peak power consumption, the water discharge flow can be increased to increase power generation; during low power consumption, the water discharge flow can be reduced or water can be stored for later use. In addition, pumped storage power stations can also convert electrical energy into water potential energy and store it when the power grid load is low, and then release it to generate electricity during peak power consumption.

[0023] Regulation of renewable energy power generation: renewable energy power generation such as wind power and photovoltaic power generation is intermittent and uncertain, but it can be regulated through forecasting technology, energy storage technology, etc. For example, a renewable energy power generation forecasting model can be established to forecast power generation in advance and adjust the power generation of other power sources according to the forecast results; at the same time, the fluctuation of renewable energy power generation can also be balanced by building energy storage facilities.

[0024] See also Figure 2 , based on the fact that the power supply on the power supply side is too macroscopic, it is not suitable for the power distribution planning in small areas; therefore, the power regulation in small areas often uses grid-side energy storage.

[0025] Based on the previous power consumption information, the host computer can infer the subsequent power consumption information, and can also monitor, predict and analyze the operation status of the power grid in real time, as well as optimize the formulation and execution of the dispatching strategy. According to the real-time operation status and prediction results of the power grid, the power generation of each power source and the operation status of the transmission and distribution network are automatically adjusted to achieve fast and accurate regulation of electric energy. The regulation transmits signals to the single-chip microcomputer through the communication chip. The single-chip microcomputer realizes the change of energy storage on the grid side and realizes power regulation by controlling the conduction state of the metal oxide semiconductor field effect transistor of the power regulation control circuit. The communication chip can be a MAX232 chip to realize RS232 communication between the single-chip microcomputer and the host computer; the communication chip can be a MAX485 to realize RS485 communication between the single-chip microcomputer and the host computer; the communication chip can be an ESP8266 to realize WIFI communication between the single-chip microcomputer and the host computer. Since there are various communication methods, no examples will be given here.

[0026] In this example: See Figure 4 , the electric energy charging and discharging module 3 includes: A voltage stabilization unit, used to reduce the fluctuation of the voltage input from the first step-down rectifying and filtering module 2 to the battery charging and discharging unit; The battery charging and discharging unit is used for charging the battery through the output voltage of the first step-down rectifier filter module 2 through the charging switch when the charging switch is turned on; and for transmitting the battery output voltage through the discharging switch to the inverter module 4 when the discharging switch is turned on; and the battery discharging includes a conventional independent discharging mode of each battery and an abnormal battery series discharging mode; The input end of the voltage stabilization unit is connected to the output end of the first step-down rectifier filter module 2 , the output end of the voltage stabilization unit is connected to the input end of the battery charge and discharge unit, and the output end of the battery charge and discharge unit is connected to the input end of the inverter module 4 .

[0027] In this example: See Figure 4 The voltage stabilization unit includes a first resistor R1 and a first capacitor C1. One end of the first resistor R1 is connected to the output end of the first step-down rectifier and filter module 2. The other end of the first resistor R1 is connected to one end of the first capacitor C1 and the input end of the battery charge and discharge unit. The other end of the first capacitor C1 is grounded.

[0028] When the voltage input to the first step-down rectifying and filtering module 2 fluctuates, based on the principle that the capacitor voltage does not change suddenly, the first capacitor C1 is provided to avoid the battery charging and discharging unit from introducing fluctuating voltage.

[0029] In another embodiment: when the input voltage fluctuates greatly and a single capacitor is not sufficient to stabilize the voltage, additional capacitors may be appropriately provided.

[0030] In this example: See Figure 4 The battery charge and discharge unit includes multiple charge and discharge electronic units, the first end of the middle charge and discharge electronic unit is connected to the second end of the previous charge and discharge electronic unit (the source of V5), the second end of the middle charge and discharge electronic unit is connected to the first end of the next charge and discharge electronic unit (the source of V7), the first end of the first charge and discharge electronic unit is not connected to other charge and discharge electronic units (the positive electrode of E1), and the second end of the last charge and discharge electronic unit is not connected to other charge and discharge electronic units (the negative electrode of battery E3).

[0031] In this example: See Figure 4The charge and discharge electronic unit includes a first metal oxide semiconductor field effect transistor V1, a first battery E1, a fourth metal oxide semiconductor field effect transistor V4, a fifth metal oxide semiconductor field effect transistor V5, an eighth metal oxide semiconductor field effect transistor V8, and a first diode D1. The drain of the first metal oxide semiconductor field effect transistor V1 is connected to the output end of the first step-down rectifier and filter module 2. The source of the first metal oxide semiconductor field effect transistor V1 is connected to the positive electrode of the first battery E1 and the drain of the eighth metal oxide semiconductor field effect transistor V8. The negative electrode of the first battery E1 is connected to the drain of the fifth metal oxide semiconductor field effect transistor V5 and the source of the fourth metal oxide semiconductor field effect transistor V4. The fifth metal oxide semiconductor field effect transistor V5 is connected to the output end of the first step-down rectifier and filter module 2. The source of the semiconductor field effect transistor V5 is connected to the first end of the next charging and discharging electronic unit, the drain of the fourth metal oxide semiconductor field effect transistor V4 is grounded, the source of the eighth metal oxide semiconductor field effect transistor V8 is connected to the positive electrode of the first diode D1, the negative electrode of the first diode D1 is connected to the input end of the inverter module 4, the gate of the first metal oxide semiconductor field effect transistor V1, the gate of the fourth metal oxide semiconductor field effect transistor V4, and the gate of the eighth metal oxide semiconductor field effect transistor V8 are respectively connected to different IO ports of the single chip computer, the gate of the fifth metal oxide semiconductor field effect transistor V5 is connected to the gate of the fourth metal oxide semiconductor field effect transistor V4, and different charging and discharging electronic units are connected to different IO ports of the single chip computer.

[0032] In this example: See Figure 4 , the negative electrode of the last charging and discharging electronic unit battery is grounded through two metal oxide semiconductor field effect transistors, and the two metal oxide semiconductor field effect transistors between the grounding can be removed.

[0033] Figure 4 The middle battery charging and discharging unit is provided with three charging and discharging electronic units, and three charging and discharging electronic units are used as an example; During the low power consumption period, generally speaking, there is too much power on the power consumption side. At this time, the IO port of the single chip microcomputer outputs a voltage signal to control the first metal oxide semiconductor field effect transistor V1 to turn on and the eighth metal oxide semiconductor field effect transistor V8 to turn off. The voltage passes through the first metal oxide semiconductor field effect transistor V1 to charge the first battery E1. Figure 4 Three charging and discharging electronic units are arranged in the battery pack. In the power consumption valley, the three charging and discharging electronic units can all charge the battery. The power consumption is different in different time periods during the power consumption valley period. Therefore, the number of charging and discharging electronic units to charge is controlled. According to the demand, different numbers of charging and discharging electronic units to charge are controlled during different power consumption valley periods, so that the power regulation is more precise. During the peak period of electricity consumption, the principle is similar to that during the valley period of electricity consumption. The IO port of the single-chip microcomputer sends a signal to disconnect the first metal oxide semiconductor field effect transistor V1 and turn on the eighth metal oxide semiconductor field effect transistor V8. The output voltage of the first battery E1 is supplied by the eighth metal oxide semiconductor field effect transistor V8, the first diode D1, and the inverter module 4. During the peak period of electricity consumption, the batteries of the three charging and discharging electronic units are all discharged. During other periods during the peak period of electricity consumption, the number of discharged batteries of the three charging and discharging electronic units is controlled based on the electricity consumption conditions, and the power control is refined. In order to avoid the long-term self-discharge of the battery due to long-term charging, which leads to a decrease in the service life of the battery, when the battery of a single charging and discharging electronic unit is discharged, the single-chip microcomputer controls the three charging and discharging electronic units to discharge in a cycle to avoid the battery not being discharged in time.

[0034] When the voltage of the power supply bus drops too much, the power shortage trigger module 7 detects the signal and feeds back the signal to the single-chip microcomputer. At this time, the IO port of the single-chip microcomputer sends a signal to turn off the fourth metal oxide semiconductor field effect transistor V4 and turn on the fifth metal oxide semiconductor field effect transistor V5, so that the batteries of the two charging and discharging electronic units are connected in series through the fifth metal oxide semiconductor field effect transistor V5. Based on the different feedback signals of the power shortage trigger module 7, multiple batteries can be connected in series through metal oxide semiconductor field effect transistors to increase the voltage output to the inverter module 4, to increase the voltage output to the distribution module 1, and to ensure normal power consumption on the power consumption side.

[0035] Since the second end of the last charging and discharging electronic unit is no longer connected to other charging and discharging electronic units, the two metal oxide semiconductor field effect transistors between the negative electrode of the battery of the last charging and discharging electronic unit and the common ground can be removed.

[0036] In another embodiment: Figure 4 The middle battery charging and discharging unit is provided with three charging and discharging electronic units, and the number of the charging and discharging electronic units is not limited in actual use.

[0037] In this example: See Figure 4 The sampling feedback module 6 includes a second resistor R2, a second capacitor C2, a third resistor R3, and a third capacitor C3. One end of the second resistor R2 is connected to one end of the second capacitor C2, one end of the third resistor R3, the output end of the second step-down rectifier and filter module 5, and the input end of the power failure trigger module 7. The other end of the second resistor R2 is grounded, the other end of the second capacitor C2 is grounded, the other end of the third resistor R3 is connected to one end of the third capacitor C3 and an IO port of the single-chip computer, and the other end of the third capacitor C3 is grounded.

[0038] The 380V voltage is distributed as a three-phase four-wire system (i.e. three live wires plus one neutral wire) to supply power to households. Therefore, the power consumption information on the power consumption side can be determined by detecting the 380V voltage. The second resistor R2 is used as a sampling resistor, and the voltage thereon is used as a sampling voltage, which is output to the single-chip microcomputer through the third resistor R3 and the third capacitor C3, so that the single-chip microcomputer can adjust the charge and discharge information of the charge and discharge electronic unit.

[0039] In another embodiment, the third resistor R3 can be omitted. The third resistor R3 is used for current limiting to prevent excessive current output to the battery IO port from damaging the single-chip microcomputer.

[0040] In this example: See Figure 4 The power failure trigger module 7 includes a first amplifier U1, a second amplifier U2, a fourth resistor R4, a fifth resistor R5, a fourth capacitor C4, and a fifth capacitor C5. The inverting end of the first amplifier U1 is connected to the inverting end of the second amplifier U2 and the output end of the sampling feedback module 6. The non-inverting end of the first amplifier U1 is connected to the first reference voltage, and the non-inverting end of the second amplifier U2 is connected to the second reference voltage. The output end of the first amplifier U1 is connected to one end of the fourth resistor R4, and the other end of the fourth resistor R4 is connected to one end of the fourth capacitor C4 and an IO port of the single-chip computer. The other end of the fourth capacitor C4 is grounded. The output end of the second amplifier U2 is connected to one end of the fifth resistor R5, and the other end of the fifth resistor R5 is connected to one end of the fifth capacitor C5 and another IO port of the single-chip computer. The other end of the fifth capacitor C5 is grounded.

[0041] When the voltage drop of the power supply bus is too much under fault conditions, the sampling voltage is relatively small at this time. When it is less than the first reference voltage and greater than the second reference voltage, the first amplifier U1 outputs a high level and feeds back a power shortage signal to the single-chip microcomputer, and determines that the voltage drop is one level. The single-chip microcomputer controls the two batteries to be connected in series and then supply power to the distribution module 1 through the inverter module 4; when the sampling voltage is less than the first reference voltage and also less than the second reference voltage, the first amplifier U1 and the second amplifier U2 both output a high level and feed back two power shortage signals to the single-chip microcomputer, and determines that the voltage drop is two levels. The single-chip microcomputer controls the three batteries to be connected in series and then supply power to the distribution module 1 through the inverter module 4. By supplying power in series with batteries under fault conditions, sufficient voltage is guaranteed and the power consumption side can be used normally.

[0042] In another embodiment: two amplifiers and corresponding peripheral circuits are provided here to match three charging and discharging electronic units. When the number of charging and discharging electronic units increases, the number of amplifiers and peripheral circuits also increases accordingly.

[0043] The working principle of the present invention is as follows: the power distribution module 1 is used to convert the 10KV AC power on the power supply bus into 380V AC power for use on the demand side; the first step-down rectifier and filter module 2 is used to convert the 10KV AC power on the power supply bus into DC power to supply power to the power charging module; the power charging and discharging module 3 is used to introduce the voltage of the first step-down rectifier and filter module 2 to charge the battery when the charging switch is turned on; and is used to output the battery voltage to the inverter module 4 when the discharge switch is turned on; the battery discharge includes the conventional independent discharge mode of each battery and the abnormal battery series discharge mode. The inverter module 4 is used to convert direct current into alternating current and output it to the power distribution module 1; the second step-down rectifier and filter module 5 is used to convert the alternating current (380V) output by the power distribution module 1 to the demand side into direct current, and output it to the sampling feedback module 6; the sampling feedback module 6 is used to sample the voltage on the demand side, obtain the sampled voltage, and feed it back to the single-chip microcomputer and the power shortage trigger module 7; the power shortage trigger module 7 is used to feed back a signal to the single-chip microcomputer when the sampled voltage is less than the reference voltage, and the single-chip microcomputer controls the battery discharge to change from the conventional independent discharge mode of each battery to the abnormal battery series discharge mode.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered as exemplary and non-restrictive in all respects.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electric energy regulation control circuit for power grid distribution planning, characterized in that: The electric energy regulation control circuit for power grid distribution planning includes: The power distribution module is used to convert the 10KV AC power on the power supply bus into 380V AC power for use on the demand side; The first step-down rectifier and filter module is used to convert the 10KV AC power on the power supply bus into DC power to supply power to the power charging module; The electric energy charging and discharging module is used to introduce the voltage of the first step-down rectifier filter module to charge the battery when the charging switch is turned on; when the discharging switch is turned on, the battery outputs the voltage to the inverter module; when the battery is discharged, it includes a conventional independent discharge mode of each battery and an abnormal battery series discharge mode; An inverter module is used to convert direct current into alternating current and output it to a power distribution module; The second step-down rectifier and filter module is used to convert the AC power (380V) output by the power distribution module to the demand side into DC power, and output it to the sampling feedback module; The sampling feedback module is used to sample the voltage on the demand side, obtain the sampled voltage, and feed it back to the single-chip microcomputer and the power shortage trigger module; The power failure trigger module is used to feed back a signal to the single-chip microcomputer when the sampling voltage is less than the reference voltage. The single-chip microcomputer controls the battery discharge to change from the conventional independent battery discharge mode to the abnormal battery series discharge mode; The first output end of the power distribution module is connected to the input end of the first step-down rectifier and filter module, the second output end of the power distribution module is connected to the input end of the second step-down rectifier and filter module, the output end of the first step-down rectifier and filter module is connected to the input end of the electric energy charging and discharging module, the output end of the electric energy charging and discharging module is connected to the input end of the inverter module, the output end of the inverter module is connected to the input end of the power distribution module, the output end of the second step-down rectifier and filter module is connected to the input end of the sampling feedback module, and the output end of the sampling feedback module is connected to the input end of the power shortage trigger module.

2. The electric energy regulation control circuit for power grid distribution planning according to claim 1, characterized in that: The electric energy charging and discharging module includes: A voltage stabilization unit, used to reduce the fluctuation of the voltage input from the first step-down rectifier and filter module to the battery charging and discharging unit; The battery charging and discharging unit is used for charging the battery through the output voltage of the first step-down rectifier and filter module via the charging switch when the charging switch is turned on; and for transmitting the battery output voltage to the inverter module via the discharging switch when the discharging switch is turned on; and the battery discharging includes a conventional independent discharging mode for each battery and an abnormal battery series discharging mode; The input end of the voltage stabilization unit is connected to the output end of the first step-down rectifier filter module, the output end of the voltage stabilization unit is connected to the input end of the battery charge and discharge unit, and the output end of the battery charge and discharge unit is connected to the input end of the inverter module.

3. The electric energy regulation control circuit for power grid distribution planning according to claim 2, characterized in that: The voltage stabilization unit includes a first resistor and a first capacitor. One end of the first resistor is connected to the output end of the first step-down rectifier and filter module, the other end of the first resistor is connected to one end of the first capacitor and the input end of the battery charge and discharge unit, and the other end of the first capacitor is grounded.

4. The electric energy regulation control circuit for power grid distribution planning according to claim 2, characterized in that: The battery charge and discharge unit includes multiple charge and discharge electronic units, the first end of the middle charge and discharge electronic unit is connected to the second end of the previous charge and discharge electronic unit, the second end of the middle charge and discharge electronic unit is connected to the first end of the next charge and discharge electronic unit, the first end of the first charge and discharge electronic unit is not connected to other charge and discharge electronic units, and the second end of the last charge and discharge electronic unit is not connected to other charge and discharge electronic units.

5. The electric energy regulation control circuit for power grid distribution planning according to claim 4, characterized in that: The charge and discharge electronic unit includes a first metal oxide semiconductor field effect transistor, a first battery, a fourth metal oxide semiconductor field effect transistor, a fifth metal oxide semiconductor field effect transistor, an eighth metal oxide semiconductor field effect transistor, and a first diode. The drain of the first metal oxide semiconductor field effect transistor is connected to the output end of the first step-down rectifier and filter module. The source of the first metal oxide semiconductor field effect transistor is connected to the positive electrode of the first battery and the drain of the eighth metal oxide semiconductor field effect transistor. The negative electrode of the first battery is connected to the drain of the fifth metal oxide semiconductor field effect transistor and the source of the fourth metal oxide semiconductor field effect transistor. The source of the field effect transistor is connected to the first end of the next charging and discharging electronic unit, the drain of the fourth metal oxide semiconductor field effect transistor is grounded, the source of the eighth metal oxide semiconductor field effect transistor is connected to the positive electrode of the first diode, the negative electrode of the first diode is connected to the input end of the inverter module, the gate of the first metal oxide semiconductor field effect transistor, the gate of the fourth metal oxide semiconductor field effect transistor, and the gate of the eighth metal oxide semiconductor field effect transistor are respectively connected to different IO ports of the microcontroller, the gate of the fifth metal oxide semiconductor field effect transistor is connected to the gate of the fourth metal oxide semiconductor field effect transistor, and different charging and discharging electronic units are connected to different IO ports of the microcontroller.

6. The electric energy regulation control circuit for power grid distribution planning according to claim 5, characterized in that: The negative electrode of the last charging and discharging electronic unit battery is grounded through two metal oxide semiconductor field effect transistors, and the two metal oxide semiconductor field effect transistors between the grounding can be removed.

7. The electric energy regulation control circuit for power grid distribution planning according to claim 1, characterized in that: The sampling feedback module includes a second resistor, a second capacitor, a third resistor, and a third capacitor. One end of the second resistor is connected to one end of the second capacitor, one end of the third resistor, the output end of the second step-down rectifier and filter module, and the input end of the power failure trigger module. The other end of the second resistor is grounded, the other end of the second capacitor is grounded, the other end of the third resistor is connected to one end of the third capacitor and an IO port of the single-chip computer, and the other end of the third capacitor is grounded.

8. The electric energy regulation control circuit for power grid distribution planning according to any one of claims 1 to 7, characterized in that: The power failure trigger module includes a first amplifier, a second amplifier, a fourth resistor, a fifth resistor, a fourth capacitor, and a fifth capacitor. The inverting end of the first amplifier is connected to the inverting end of the second amplifier and the output end of the sampling feedback module, the non-inverting end of the first amplifier is connected to the first reference voltage, the non-inverting end of the second amplifier is connected to the second reference voltage, the output end of the first amplifier is connected to one end of the fourth resistor, the other end of the fourth resistor is connected to one end of the fourth capacitor and an IO port of the single-chip computer, the other end of the fourth capacitor is grounded, the output end of the second amplifier is connected to one end of the fifth resistor, the other end of the fifth resistor is connected to one end of the fifth capacitor and another IO port of the single-chip computer, and the other end of the fifth capacitor is grounded.

Images