• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for optimizing the consumption of reactive energy in an electrical network comprising a power supply monitoring and control system, said system comprising an electricity generator, electric charges, a compensation system of power, an electricity transmission line, an electro-digital processor and a counter having the remote readings characterized in that the method comprises the steps of: measuring the data set of the electrical charges by at least one counter having remote readings, - collecting the data set of the electrical charges and transmitting them to the electro-digital processor for the establishment of data curves, - calculating a power factor of the electric charges, - allowing compensation of the energy by setting the type and configuration of the compensation systems to be installed, when the calculated power factor has a value less than or equal to a predefined threshold value: - compensate the reactive energy by actuation of the compensation systems installed.
    公开号:FR3028681A1
    申请号:FR1461182
    申请日:2014-11-19
    公开日:2016-05-20
    发明作者:Mathieu Perchais
    申请人:Mathieu Perchais；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The present invention relates to the field of monitoring electrical networks and optimizing the consumption of reactive energy. It relates more particularly to a method for automating the detection of reactive energy and thus enabling optimization of the energy consumption implemented in the electrical networks. STATE OF THE ART In the state of the art, a solution described in the patent application FR2494055 is known. This application describes a device for compensation of reactive electrical energy in a network comprising at least one compensation unit connected to the network. The compensation unit comprises an inductor, a capacitor and a first bidirectional thyristor switch, and a second directional thyristor switch, and control means comprising a logic gate "or", connected in input on the one hand to a first measuring circuit with detection of a predetermined threshold of the voltage across said first switch and secondly with a second measuring circuit with detection of a predetermined threshold of the voltage across said second switch. The solution proposed by the patent application FR2693601 describing a reactive power compensation device, which comprises means for measuring the current in the main power supply circuit, downstream from the connection of the controlled switch, is also known. and means for measuring a magnitude representative of the apparent power, connected to the output of the current measuring means. The opening of the controlled switch is controlled when said representative magnitude exceeds a predetermined threshold value. Also known in the state of the art are current regulation solutions for a reactive energy compensation system. Patent application FR2873866 describes an example of a current regulation device. The device in question comprises a coupling transformer whose secondary winding is intended to be connected in series between an electrical energy distribution network and a reactive energy compensation capacitor, an active filter comprising an inverter, and a loop IEC 60050 - International Electrotechnical Vocabulary - Details for IEV number 841-21-31-2 Electricity supply / Electro-magnetic equipment / Instruments and apparatus / Devices / Description of the invention: Current control system estimating a fundamental value of electric current, in order to control the inverter of the active filter.
    [0002] Disadvantages of the Prior Art Solutions of the prior art relating to devices for compensation of reactive electrical energy in a network have several disadvantages. Some of the solutions are based on the predetermined machine thresholds, which do not have the possibility of remote detection of the reactive energy and therefore do not make it possible to adapt to the actual situations of use. Other solutions require the intervention of workers on site at given times. This solution does not allow remote monitoring and permanent optimization.
    [0003] Furthermore, the solutions of the prior art are suitable for the compensation of the individual electric charge. It does not allow centralized management of multiple sites at the same time. Finally, the solutions of the prior art are limited to passive compensation. The compensation devices must wait for the triggering of the predetermined threshold to start the compensation. They do not offer the possibility of preprogrammed active compensation. Solution Provided by the Invention To overcome these drawbacks, the invention relates, in its most general sense, to a process for optimizing the consumption of reactive energy in an electricity network comprising a monitoring and control system. said system comprising an electricity generator, electrical loads, an electricity meter, a power compensation system, an electricity transmission line, and an electro-digital processor. The method comprises the steps of measuring the powers consumed by the electrical charges by at least one electric meter having remote readings, collecting all of these data and transmitting them to the electro-digital processor for drawing curves. data, calculating the power factor of the electrical charges, identifying the need to compensate the reactive energy when the calculated power factor has a value less than or equal to a predefined threshold value, to determine the type and configuration of the systems compensation device to be installed and then to drive said compensation system. Preferably, the measurement of the electric charge data set, the data collection, the power factor calculation and the energy compensation are automated. According to a particular embodiment, the measurement of the data set of the electrical charges, the collection of data, the calculation of the power factor and the energy compensation are controlled in real time and in distance. According to another embodiment, the steps in the method can switch between a periodic measurement mode 35 and a time-based random measurement mode. According to a particular embodiment, the compensation of the energy is performed by a compensation. reactive energy according to a compensation mode selected from one of three modes: an individual compensation mode, a local compensation mode and an overall compensation mode. According to another particular embodiment, the energy compensation is actively performed by a pre-programming of the parameters. This invention has several advantages, from a technical point of view, a better adaptation of the sizing, the decreases in voltage drops and losses in line. From an economic point of view, the elimination of reactive energy consumption and the increase in active power reduce the company's bill.
    [0004] In addition, this invention makes it possible to carry out a remote energy diagnosis and, in particular, to avoid the sending of technicians on site and the installation of expensive apparatus for the measurement. It's a tailor-made service.
    [0005] DETAILED DESCRIPTION OF THE FIGURES The present invention will be better understood on reading the description which follows, relating to nonlimiting examples of embodiment, and with reference to the accompanying drawings in which: FIG. 1 represents a schematic diagram according to the invention illustrating a monitoring and control system in an electricity network; FIG. 2 represents the vectors of the apparent, active and reactive portions of the current and of the power; FIG. 3 represents the active power, the reactive power and the apparent power in the three-phase AC circuits; FIG. 4 represents the power factors of the three phases collected every second for a duration of 90 seconds. DETAILED DESCRIPTION OF NON-LIMITATIVE EXAMPLES OF THE INVENTION FIG. 1 represents a schematic diagram according to the invention illustrating a power supply monitoring and adjustment system 100. The monitoring system comprises a generator of electricity 110, electrical charges 120, a reactive power compensation system 130, an electricity transmission line 140, an electro-digital processor 150 and an electric meter having the remote readings 160. The electricity generator 110 provides power to the electrical charges 120 via the power line 140. In the AC circuits, a transformer delivers a current at a certain fixed voltage. Depending on the characteristics of the electrical charges 120, they can be classified as resistive receivers, inductive receivers and capacitive receivers. Inductive receivers and capacitive receivers induce phase shifts of the current with respect to the voltage. This phase shift causes unnecessary consumption of electrical energy, which does not correspond to heat or mechanical work. In order to save energy, the power compensation system 130 is set up and configured by the electro-digital processor 150. Electricity meters (160) have remote readings and measure the powers consumed by the loads. according to the user need, either punctually in a predetermined time, or automatically continuously.
    [0006] The electric meters are located either on the side of the electric charges, or on the side of the electricity generator, or located as an intermediate. The electric meters transfer power data consumed by the electrical loads to the digital processor 150, where the data is analyzed by the algorithm that determines the configuration to be applied to the controller of the power compensation system. 130. Figure 2 shows the phase shift of the current and of the active and reactive power. Electrical charges include inductive, capacitive and resistive receivers which can induce phase shift. When an inductive / capacitive receiver is connected in the circuit, the total current Is will be shifted by phi (cp) with respect to the voltage and decomposed into two parts: the active current Ip = Is xcoscp, where the component is in phase with the voltage, and the reactive current Iq = Is Xsincp, where the component is 90 ° out of phase with the voltage. The formula of the active power: P = Ux k; xcoscp 15cp is the phase shift of the total current with respect to the voltage, and the factor coscp is called the power factor, which is often indicated on the electric wafer of most electrical machines. The reactive power Q is defined by analogy with the active power P: Q = U x Is Xsincp Reactive power makes it possible to evaluate the importance of inductive receivers (motors, fluorescent lamps,) and capacitive receivers (capacitors) in installation. The product of the total current voltage is called the apparent power S: S = Ux / s. Figure 3 shows the active power, the reactive power and the apparent power in the three-phase AC circuits. This data is collected every 30 seconds for a period of 90 seconds. The electric charges, powered by alternating current, involve active and reactive energies, which correspond to work respectively under active and reactive powers for a certain duration. The active energy is transformed into mechanical energy or heat. The reactive energy is mainly due to the inductive / capacitive receivers present in the charges and does not correspond to heat or mechanical work. In known manner, the reactive energy can be reduced by connecting the compensation system, for example, a capacitor bank system, to the power line. The compensation system can also incorporate an anti-harmonic filter, which aims to reduce harmonic distortion and to avoid peaks causing over-consumption and affecting the service life of equipment.
    [0007] Figure 4 shows the power factors of the three phases collected each second for a duration of 90 seconds. The power factor cos cp on a value of 0.75 is below the predefined threshold value, which indicates an excessive reactive energy demand of the equipment of the installation. The purpose of the compensation is to maximize the power factor without inducing overcompensation / overload. For example, when the power factor is below 0.95, it triggers a high phase shift e-mail alert. In addition, when the compensation becomes unnecessary, another alert 20 is sent. The method for optimizing energy consumption has four steps. The first step is to measure, during a monitoring period, the powers consumed by electric charges. The measurement is carried out automatically continuously for a given period of time or up to a predefined quantity of energy consumed. For example, from the readings of new generation electricity meters, the data are collected every 10 minutes. In a factory where workers work from 8:00 am to 8:00 pm, recording the power loads for a week will show typical consumption behaviors, such as changes in the parameters at the time of connection of each machine. When the reactive power consumption exceeds a certain threshold before the end of the week, then indicating a waste of energy, the monitoring period ends earlier. The second step consists in transmitting the data to the electro-digital processor 150 which analyzes the type of phase shift (advance or delay), the phase shift moment and the phase shift duration. In known manner, the phase of the capacitive current 5 is in advance of 90 ° with respect to the phase of the voltage while the phase of the inductive current is delayed by 90 °. Resistive receivers do not change the phase of the current. The third step is a diagnostic step during which the compensation algorithm calculates the power factor and triggers, if necessary, an alert, in particular according to the contract linking the electricity supplier and the user who owns them. electric charges. An example is that shown in Figure 4: the recommended value of the power factor cos cp in the range (0.95, 1) is considered the optimized situation. Outside this range, the compensation system is activated either under manual control or automatically. In order to ensure the stability of the compensation system, the duration of the power factor outside this range is also considered.
    [0008] The fourth step is to install the compensation equipment according to a compensation method adapted to the network concerned and to the needs thereof. The compensation can thus be carried out according to three modes. The first mode consists of individual compensation: the compensation equipment is connected directly to the terminals of each inductive / capacitive receiver. This compensation is technically ideal since it produces the reactive energy at the place where it is consumed, and in a quantity adjusted to the demand. However, this compensation is preferably used for the machine whose operating hours reach certain times and / or the reactive energy reaches a certain threshold. The second mode consists of local compensation: the compensation equipment is installed by sector. In one sector, several machines with different receivers are connected to the same electrical supply network. The load curve of the powers of a sector has reactive powers and reactive energies as a result of the cancellation and the amplification of the phase shift of the different machines connected in this sector.
    [0009] The third mode consists of a global compensation: the compensation equipment is installed at the head of the electrical charges and provide all the charges of the compensation. They help relieve the transformer installed by the electricity supplier. However, the phase shift may vary randomly due to the collective effect of all connected machines. All stages are automated and can be controlled in real time and remotely. Depending on the consumption history, the parameters may be programmed upstream to actively compensate for the use of the electrical charges. According to the user's requirement, the parameters may be different at the requested time, such that the range of the power factor cos p may be changed remotely so as to present, for example, a different value of the afternoon 20 with the morning one and respectively. Due to the periodicity of some machines, the periodic measurement mode may mask some information. Switching from a periodic measurement mode to a random measurement mode helps to verify certain information.
    [0010] Also, and advantageously, when the operation of measuring the power of the load is in random mode, all the other operations switch to random mode.
    权利要求:
    Claims (7)
    [0001]
    CLAIMS 1 - A method for optimizing the consumption of reactive energy in an electrical network comprising a power supply monitoring and control system (100), said system comprising an electricity generator (110), electrical loads (120) ), a power compensation system (130), an electricity transmission line (140), an electro-digital processor (150) and a counter having the remote readings (160) characterized in that the method comprises the steps consisting in: measuring power consumed by the electric loads by at least one counter having remote readings; collecting power consumed by the electric charges and transmitting them to the electro-digital processor for establishing curves; data, - calculate a power factor of the electric loads, - allow a compensation of the reactive energy by fixing the type and the confi the compensation system to be installed, when the calculated power factor has a value less than or equal to a predefined threshold value 25 - compensate the reactive energy by actuation of the compensation systems installed.
    [0002]
    2 - A method for optimizing the consumption of reactive energy in an electrical network according to claim 1, characterized in that the measurement of the powers consumed by the electric charges, the data collection, the calculation of the power factor, the configuration and the actuation of the compensation systems are automated. 35
    [0003]
    3 - A method for optimizing power consumption in an electrical network according to claim 1 or claim 2, characterized in that the measurement of the 3028681 powers consumed by the electrical charges, the data collection, the calculation of the power factor , the configuration and actuation of the compensation systems are controlled in real time and remotely.
    [0004]
    4 - Process for optimizing power consumption in an electrical network according to any one of claims 1 to 3, characterized in that all the steps in the process can switch between a periodic measurement mode and a random measurement mode in time.
    [0005]
    5 - Process for optimizing energy consumption in an electrical network according to any one of claims 1 to 4, characterized in that the energy compensation is achieved by a compensation of the reactive energy according to a mode compensation mode selected from one of three modes: an individual compensation mode, a local compensation mode and a global compensation mode. 20
    [0006]
    6 - Process for optimizing power consumption in an electrical network according to any one of claims 1 to 5, characterized in that the energy compensation is actively performed by pre-programming a range of values power factor. The energy in a claims 1 to 6, characterized in compensation systems for installing actuating said system. consumption of what the configuration of is to set the threshold
    [0007]
    7 - Method for optimizing the electrical network according to any one
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    法律状态:
    2015-11-10| PLFP| Fee payment|Year of fee payment: 2 |
    2016-05-20| PLSC| Publication of the preliminary search report|Effective date: 20160520 |
    2016-11-30| PLFP| Fee payment|Year of fee payment: 3 |
    2017-11-24| PLFP| Fee payment|Year of fee payment: 4 |
    2018-11-26| PLFP| Fee payment|Year of fee payment: 5 |
    2020-05-29| PLFP| Fee payment|Year of fee payment: 6 |
    2020-11-30| PLFP| Fee payment|Year of fee payment: 7 |
    2021-01-08| TP| Transmission of property|Owner name: FIDELISE, FR Effective date: 20201126 |
    2021-11-30| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1461182|2014-11-19|
    FR1461182A|FR3028681B1|2014-11-19|2014-11-19|METHOD FOR OPTIMIZING THE CONSUMPTION OF REACTIVE ENERGY|FR1461182A| FR3028681B1|2014-11-19|2014-11-19|METHOD FOR OPTIMIZING THE CONSUMPTION OF REACTIVE ENERGY|
    PCT/FR2015/053131| WO2016079435A1|2014-11-19|2015-11-19|Method for optimizing consumption of reactive power|
    CN201580068489.9A| CN107112756A|2014-11-19|2015-11-19|Method for Optimal Reactive Power energy expenditure|
    US15/528,048| US10707682B2|2014-11-19|2015-11-19|Method for optimizing consumption of reactive energy|
    EP15805599.6A| EP3245701A1|2014-11-19|2015-11-19|Method for optimizing consumption of reactive power|
    JP2017527799A| JP6879912B2|2014-11-19|2015-11-19|How to optimize the consumption of dead power|
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