Flame-light integrated power control circuit

Abstract

The utility model provides a flame integrated power control circuit, which comprises an input circuit, a decision scheduling circuit and an execution control circuit. The input circuit is connected with an instruction sending end of the scheduling master station and is connected with the decision scheduling circuit; and the decision scheduling circuit is also connected with the execution control circuit. The input circuit is provided with a low dropout regulator, a coupling circuit and at least two instruction input ends. The decision scheduling circuit is provided with a function generator, a synchronous demodulator and a plurality of operational amplifiers. The execution control circuit is provided with a preamplifier, an electronic switch and an electric actuator. The system is simple in structure and low in cost, realizes a complete process from instruction receiving to end execution through circuit combination, has the capability of analyzing simple instructions, and realizes automatic processing, thereby improving the overall efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and particularly relates to a fire-light integrated power control circuit. Background Art

[0002] With the continuous growth of global energy consumption, the environmental problems caused by the use of traditional fossil energy are becoming increasingly prominent, such as greenhouse gas emissions, air pollution, etc.; therefore, there is an urgent need to develop cleaner and more efficient energy technologies.

[0003] However, with the increase in the proportion of new energy output, some inherent problems have gradually attracted people's attention. Among them, the intermittency and instability of new energy particularly affect the stability and safety of the power grid.

[0004] At present, in response to the above problems, the main solution is to use a new generation of information technology to optimize the control of thermal power units and photovoltaic power stations as a whole, realize the adaptive joint intelligent operation of multiple control objectives, and efficiently convert the fluctuating photovoltaic power into stable power and heat supply sources. The fire-light integrated technology can effectively reduce the use of fossil energy, thereby reducing greenhouse gas emissions and the emissions of other environmental pollutants, helping to alleviate environmental problems; at the same time, it can effectively balance the volatility and intermittency of solar energy, ensure the stability of energy supply, and provide support for the stable operation of the power grid.

[0005] However, the current fire-light integrated power control is not perfect. The applied intelligent system has a complex structure and high cost. Configuring a commercially available complete set of systems in some small-scale fire-light linkage stations obviously increases unnecessary cost expenditures, and there are also many subsequent expenditures for system operation, seriously affecting the overall rate of return.

[0006] In summary, there is still a need to develop a circuit with a simple structure, low cost, which can adapt to the fire-light integrated power control scenario and realize automatic control under simple instruction conditions. Summary of the Utility Model

[0007] The utility model aims at the problems existing in the prior art, and provides a circuit with a simple structure, low cost and adaptable to fire-light integrated power control.

[0008] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0009] A fire-light integrated power control circuit mainly includes an input circuit, a decision-making and dispatching circuit, and an execution and control circuit; the input end of the input circuit is connected to the instruction issuing end of the dispatching master station, and the output end is connected to the decision-making and dispatching circuit; the decision-making and dispatching circuit is also connected to the execution and control circuit;

[0010] The input circuit is provided with a low dropout linear regulator, a coupling circuit, and at least two instruction input terminals; each of the instruction input terminals is connected to a low dropout linear regulator; the output voltage pins of the low dropout linear regulators are all connected to the coupling circuit;

[0011] The decision-making and scheduling circuit is provided with a function generator, a synchronous demodulator, and a plurality of operational amplifiers; the output terminal of the function generator is respectively connected to a plurality of operational amplifiers, and at least one operational amplifier is a calculus operational amplifier; the calculus operational amplifier is also connected to the synchronous demodulator;

[0012] The execution control circuit is provided with a preamplifier, an electronic switch, and an electric actuator; the preamplifier is connected to the electronic switch, and the trigger of the electronic switch is connected to the electric actuator.

[0013] Optionally, the input circuit is provided with two low dropout linear regulators, including a first low dropout linear regulator and a second low dropout linear regulator;

[0014] The adjustment voltage pin of the first low dropout linear regulator is connected in parallel to both ends of the coupling circuit through a voltage regulation circuit;

[0015] The adjustment voltage pin of the second low dropout linear regulator is connected across the coupling circuit and the detection resistor of the first low dropout linear regulator through a current regulation circuit.

[0016] Optionally, the coupling circuit is a parallel combination of a coupling resistor and a coupling capacitor.

[0017] Optionally, the voltage regulation circuit is a bridged resistor network, including a main voltage-dividing resistor and an auxiliary voltage-dividing resistor;

[0018] The current regulation circuit is also a bridged resistor network, including a main current-dividing resistor and an auxiliary current-dividing resistor.

[0019] Optionally, the operational amplifiers include an inverting operational amplifier, a non-inverting operational amplifier, and the calculus operational amplifier;

[0020] The output terminal of the function generator is respectively connected to the inverting operational amplifier, the non-inverting operational amplifier, and the calculus operational amplifier.

[0021] Optionally, the decision-making and scheduling circuit is further provided with a signal conditioner and an automatic gain controller;

[0022] The output terminals of the inverting operational amplifier and the non-inverting operational amplifier are both connected to the signal conditioner;

[0023] The synchronous demodulator is connected to the automatic gain controller.

[0024] Optionally, the signal conditioner includes an operational amplifier, a filter voltage dividing circuit, and a rheostat;

[0025] The operational amplifier is respectively connected to the filter voltage dividing circuit and the rheostat.

[0026] Optionally, the automatic gain controller includes an operational amplifier and an RC circuit;

[0027] The RC circuit is connected across the inverting input terminal and the output terminal of the operational amplifier.

[0028] Optionally, the execution control circuit is further provided with a manual operator and an electric actuator position transmitter;

[0029] The electric actuator position transmitter is connected to the electric actuator;

[0030] The manual operator is connected to the preamplifier, and the electric actuator position transmitter is respectively connected to the manual operator and the preamplifier.

[0031] Optionally, the execution control circuit is further provided with a power supply, and the power supply is connected to the preamplifier;

[0032] The power supply further includes a DC part, and the DC part is respectively connected to the preamplifier and the trigger.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention has a simple structure and low cost. Through circuit combination, the complete process from instruction reception to end execution is realized, and it has the ability to parse simple instructions, realizing automatic processing, thereby improving the overall efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0036] Figure 1 It is a system diagram of the present invention;

[0037] Figure 2 It is an input circuit diagram in a specific embodiment of the present invention;

[0038] Figure 3 It is a decision-making and scheduling circuit diagram in a specific embodiment of the present invention;

[0039] Figure 4 This is the execution control circuit diagram in the specific embodiment of the present utility model.

[0040] In the figure: 1. Voltage regulation circuit, 2. Current regulation circuit, 3. Function generator, 4. Synchronous demodulator. Specific embodiments

[0041] In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0043] In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0044] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation" and "connection" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] It is worth noting that the methods used in the present utility model are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified, and their sources are not specifically limited.

[0046] Such as Figure 1As shown in the figure, this embodiment provides an integrated fire and light power control circuit, which includes an input circuit, a decision-making and scheduling circuit, and an execution control circuit. Among them, the input circuit and the decision-making and scheduling circuit are the main parts of the system. The input end of the input circuit is connected to the instruction sending end of the dispatching master station for receiving the instructions of the dispatching master station; the output end of the input circuit is connected to the decision-making and scheduling circuit for sending the processed instructions to the decision-making and scheduling circuit. The decision-making and scheduling circuit is also connected to the execution control circuits (execution control circuit 1 - execution control circuit n) corresponding to each unit (such as unit 1 - unit n) in the fire and light combined power station, so as to control specific execution units.

[0047] As Figure 2 shown, the input circuit is provided with a low dropout linear regulator, a coupling circuit, and at least two instruction input terminals. Optionally, in this embodiment, the input circuit is provided with two low dropout linear regulators, including a first low dropout linear regulator A1 and a second low dropout linear regulator A2. V in1 and V in2 are the input instructions, which are respectively connected to the V in pins of the corresponding low dropout linear regulators.

[0048] The output voltage pin V out of each low dropout linear regulator is connected to the coupling circuit; optionally, the coupling circuit is a first-order RC circuit (a circuit composed of a capacitor and a resistor), which is a parallel-coupled resistor R0 and a coupling capacitor C0, and the voltage is V0. Further, the downstream of the coupling circuit is grounded.

[0049] Optionally, the adjustment voltage pin ADJ of the first low dropout linear regulator A1 is connected in parallel to both ends of the coupling circuit through a voltage adjustment circuit 1. Further, the voltage adjustment circuit 1 is used to output voltage adjustment, which is a bridged resistor network, including a main voltage-dividing resistor R1 and an auxiliary voltage-dividing resistor R1A. The network is bridged between the output voltage pin V out and the ground pin GND of the first low dropout linear regulator A1, and the midpoint of the bridge is connected to the adjustment voltage pin ADJ.

[0050] The adjustment voltage pin ADJ of the second low dropout linear regulator A2 is connected across the coupling circuit and the detection resistor R c1 of the first low dropout linear regulator A1 through a current adjustment circuit 2. Further, the current adjustment circuit 2 is used to output current sharing adjustment. The current adjustment circuit 2 is also a bridged resistor network, including a main shunt resistor R2 and an auxiliary shunt resistor R 2A , and the network is bridged between the output voltage pin V out and the detection resistor R c1 of the first low dropout linear regulator A1. The midpoint of the bridge is then connected to the adjustment voltage pin ADJ of the detection resistor R c1 .

[0051] Two detection resistors R c1 and R c2 of the current signals i o1 and i o2 serve as the signal instructions output by this stage of the circuit and are conducted to the next stage of the circuit, namely the decision-making and scheduling circuit.

[0052] As Figure 3 shown, the decision-making and scheduling circuit is provided with a function generator 3, a synchronous demodulator 4 and a plurality of operational amplifiers. Among them, the function generator 3 in this embodiment is selected as MAX038, and its output terminal pin OUT is respectively connected to the subsequent operational amplifiers. Specifically, three groups of operational amplifiers are set in this embodiment for subsequent signal processing, namely an inverting operational amplifier, a non-inverting operational amplifier and a calculus operational amplifier. Further, the core of the inverting operational amplifier is an operational amplifier of model AD797. The inverting input terminal (-) is connected to the function generator 3, and a first-order RC circuit (R2 + C5) is connected to the non-inverting input terminal (+). A first-order RC circuit (R4 + C6) is connected across the inverting input terminal (-) and the output terminal. The core of the non-inverting operational amplifier is an operational amplifier of model AD797. The non-inverting input terminal (+) is connected to the function generator 3 through a resistor R7 and grounded through a capacitor C8; a first-order RC circuit (R6 + C7) is connected across the inverting input terminal (-) and the output terminal, and the inverting input terminal (-) is grounded through a resistor R5. The core of the calculus operational amplifier is an operational amplifier of model AD797. The non-inverting input terminal (+) and the inverting input terminal (-) are respectively connected to the function generator 3 through a capacitor C9 and a resistor R8, and grounded through a potentiometer POT2 at the non-inverting input terminal (+); a first-order RC circuit (R9 + C8) is connected across the inverting input terminal (-) and the output terminal.

[0053] The calculus operational amplifier is also connected to the synchronous demodulator 4. Optionally, the synchronous demodulator 4 in this embodiment is selected as AD630AD. The decision-making and scheduling circuit is also provided with an automatic gain controller. The output terminal VOUT of the synchronous demodulator 4 selected as AD630AD is connected to the automatic gain controller. The automatic gain controller includes an operational amplifier and an RC circuit. Its core is an operational amplifier of model OP137. The inverting input terminal (-) is connected to the output terminal VOUT through a resistor R17, and a first-order RC circuit (R19 + C14) is connected across it and the output terminal of the operational amplifier; the non-inverting input terminal (+) is grounded through a resistor R18.

[0054] Optionally, the decision-making and scheduling circuit is further provided with a signal conditioner. The output terminals of the inverting operational amplifier and the non-inverting operational amplifier are both connected to the signal conditioner. Among them, the output terminals of the two operational amplifiers are both connected to a capacitive displacement sensor for providing a position feedback signal, and a sliding rheostat POT2 is connected to both ends respectively, and resistors R10 and R11 are connected in series respectively. The output signal is connected to the signal conditioner through capacitor C9. The signal conditioner in this embodiment includes an operational amplifier, a filter voltage-dividing circuit and a sliding rheostat. The core is selected as the AD745JR operational amplifier. A filter voltage-dividing circuit (resistor network R12+R13+R14 and capacitor C10) is connected across the inverting input terminal (-) and its output terminal, and a sliding rheostat (POT2+R15) is configured. The output of the AD745JR operational amplifier is connected to the outside through capacitor C11 and a grounding resistor R16.

[0055] As Figure 4 shown, the execution control circuit is provided with a preamplifier, an electronic switch and an electric actuator; preferably, in this embodiment, the execution control circuit is further provided with a manual operator and an electric actuator position transmitter.

[0056] Among them, the manual operator is a manual operating device, which can specifically be a push-button switch, an adjustment knob, etc., for providing the ability of manual operation and adjustment; the electric actuator can be an execution component such as a primary air damper or a secondary air damper in a thermal power station, and the electric actuator position transmitter is connected to the electric actuator, which corresponds to the detection mechanism of the actuator, such as a wind valve plate angle sensor, for detecting the opening amount. The electric actuator position transmitter feeds back an electrical signal of 4 to 20 mA current and is connected to the manual operator and the preamplifier. The manual operator is connected to the preamplifier, the preamplifier is connected to the electronic switch, and the trigger of the electronic switch is connected to the electric actuator. Further, the execution control circuit is further provided with a power supply, the power supply is connected to the 220V mains and is connected to the preamplifier. It also includes an inverter in the DC part to provide DC power. The DC part is respectively connected to the preamplifier and the trigger for supplying power to DC components and can provide dual-channel 18V power supply.

[0057] Working steps:

[0058] The first step: The power control circuit in this embodiment receives the active power control instruction issued by the dispatching master station. After the power instruction enters the input circuit, functions such as filtering and dead zone limitation can be realized by adjusting the voltage and current of the circuit, and the finally executed dispatching active power instruction is obtained;

[0059] The second step: After the decision-making and scheduling circuit receives the dispatching active power instruction, the circuit divides the working conditions into 8 typical operation scenarios, outputs different instructions for different working conditions, and optimally distributes according to the overall operation conditions of photovoltaic and thermal power, and issues the distributed instructions to the execution control circuits in each power generation unit in the station;

[0060] Step 3: The actuator control circuit converts the decision instructions and outputs them to specific devices.

[0061] Based on the above circuit structure, multiple sets of preset command signals issued by the dispatching station can be constructed to process the power instructions of each power generation unit, and the power execution controller will optimize the control of the photovoltaic and thermal power equipment in the plant to achieve the active output of the station to meet the requirements of the dispatching instructions; after comprehensively considering the three operating conditions of non-heating season / heating season, thermal power / photovoltaic switching status, and power increase / decrease, 8 typical operating scenarios are finally obtained, and the optimized dispatching module formulates targeted dispatching control strategies for different types of operating conditions.

[0062] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A fire and light integrated power control circuit, characterized in that: It includes an input circuit, a decision-making and scheduling circuit, and an execution control circuit; the input end of the input circuit is connected to the instruction sending end of the scheduling master station, and the output end is connected to the decision-making and scheduling circuit; the decision-making and scheduling circuit is also connected to the execution control circuit; The input circuit is provided with a low dropout linear regulator, a coupling circuit, and at least two instruction input ends; each instruction input end is respectively connected to a low dropout linear regulator; the output voltage pins of the low dropout linear regulators are all connected to the coupling circuit; The decision-making and scheduling circuit is provided with a function generator, a synchronous demodulator, and multiple operational amplifiers; the output end of the function generator is respectively connected to multiple operational amplifiers, and at least one operational amplifier is a calculus operational amplifier; the calculus operational amplifier is also connected to the synchronous demodulator; The execution control circuit is provided with a preamplifier, an electronic switch, and an electric actuator; the preamplifier is connected to the electronic switch, and the trigger of the electronic switch is connected to the electric actuator.

2. The integrated fire and light power control circuit according to claim 1, wherein: The input circuit is provided with two low dropout linear regulators, including a first low dropout linear regulator and a second low dropout linear regulator; The adjustment voltage pin of the first low dropout linear regulator is connected in parallel to both ends of the coupling circuit through a voltage adjustment circuit; The adjustment voltage pin of the second low dropout linear regulator is connected across the coupling circuit and the detection resistor of the first low dropout linear regulator through a current adjustment circuit.

3. The integrated light and power control circuit according to claim 1 or 2, characterized in that: The coupling circuit is a parallel-connected coupling resistor and coupling capacitor.

4. The integrated fire and light power control circuit according to claim 2, wherein: The voltage adjustment circuit is a bridged resistor network, including a main voltage-dividing resistor and an auxiliary voltage-dividing resistor; The current adjustment circuit is also a bridged resistor network, including a main shunt resistor and an auxiliary shunt resistor.

5. The integrated fire and light power control circuit according to claim 1, characterized in that: The operational amplifiers include an inverting operational amplifier, a non-inverting operational amplifier, and the calculus operational amplifier; The output end of the function generator is respectively connected to the inverting operational amplifier, the non-inverting operational amplifier, and the calculus operational amplifier.

6. The integrated light and power control circuit according to claim 5, characterized in that: The decision-making and scheduling circuit is also provided with a signal conditioner and an automatic gain controller; The output ends of the inverting operational amplifier and the non-inverting operational amplifier are both connected to the signal conditioner; The synchronous demodulator is connected to the automatic gain controller.

7. The integrated fire and light power control circuit according to claim 6, wherein: The signal conditioner includes an operational amplifier, a filter voltage-dividing circuit, and a sliding rheostat; The operational amplifier is respectively connected to the filter voltage-dividing circuit and the sliding rheostat.

8. The integrated fire and light power control circuit according to claim 6, characterized in that: The automatic gain controller includes an operational amplifier and an RC circuit; The RC circuit is connected across the inverting input end and the output end of the operational amplifier.

9. The integrated light and power control circuit according to claim 1, characterized in that: The execution control circuit is also provided with a hand controller and an electric actuator position transmitter; The electric actuator position transmitter is connected to the electric actuator; The hand controller is connected to the preamplifier, and the electric actuator position transmitter is respectively connected to the hand controller and the preamplifier.

10. The integrated light and power control circuit according to claim 1, characterized in that: The execution control circuit is also provided with a power supply, and the power supply is connected to the preamplifier; The power supply also includes a DC part, and the DC part is respectively connected to the preamplifier and the trigger.

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