JP2014047939A - Generation energy management device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To independently manage power generation electric energy of photovoltaic power generation and a calorific value by a solar water heater in block.SOLUTION: A generation energy management device has: a first measuring device 4 which measures power generation electric energy of a photovoltaic power generator 2; a second measuring device 5 which measures a calorific value to be generated by a solar water heater 3; a management server 6 which calculates the total sum of the power generation electric energy and a generated calorific value on the basis of output data of the first measuring device 4 and the second measuring device 5; and a personal computer 7 which displays an arithmetic result of the management server 6, in which the solar water heater 3 has: a solar panel 31 for heating water; and a hot water storage tank 32 for storing the heated water, and comprises: a flowmeter 33 which measures a flow rate of water passing through the solar panel 31; a first temperature sensor 34 which measures temperature of water flowing in the solar panel 31; and a second temperature sensor 35 which measures temperature of water flowing out, and the second measuring device 5 measures the calorific value on the basis of flow rate data of the flowmeter 33 and temperature data of the first temperature sensor 34 and the second temperature sensor 35.

Description

  The present invention relates to a generated energy management device that manages the amount of heat generated by solar power and solar water heaters.

  Conventionally, there has been one described in Patent Document 1 as an apparatus for managing the generated power of solar power generation and the amount of heat generated by a solar water heater. In patent document 1, it is comprised so that the reduced energy may be converted into a charge etc. and displayed based on the electric power generated and consumed by the solar power generation, and the amount of heat generated and consumed by the solar water heater. ing.

JP 2012-68791 A

However, in the case of photovoltaic power generation, the generated power can be sold, so it was effective to understand the amount of saving because it was easy for users to be aware of energy saving, but the amount of heat required to heat the water Because it does not sell electricity or convert it to electricity, it wasn't perfect for users to connect with energy savings.
Therefore, it is preferable to grasp the amount of heat generated by the solar water heater alone. On the other hand, since a solar power generation device and a solar water heater all use sunlight and are energy of the nature which should be bundled in the same frame also in natural energy, the apparatus which manages collectively is desirable.

  Further, in the case of a solar water heater, the generated hot water is once stored in a hot water storage tank, and when used, it is generally taken out from the hot water storage tank and used. However, the amount of heat generated in Patent Document 1 is managed. The technology was not suitable for this form of energy management. That is, it is difficult to accurately grasp the amount of heat of hot water stored in the hot water storage tank from the solar water heater.

  Then, in view of such a problem, the present invention has an object to provide a generated energy management device that can independently and collectively manage the amount of power generated by solar power generation and the amount of heat generated by a solar water heater.

  In order to solve the above-mentioned problem, the invention of claim 1 includes a first measurement device that measures the generated power of the solar power generation device, a second measurement device that measures the amount of heat generated by the solar water heater, and the first A calculation device that calculates the total amount of generated power and generated heat based on output data of the measurement device and the second measurement device; and a display device that displays a calculation result of the calculation device, wherein the solar water heater is A solar panel for heating water and a hot water storage tank for storing heated water, a flow meter for measuring a flow rate of water passing through the solar panel, and a first temperature for measuring a water temperature flowing into the solar panel A temperature sensor and a second temperature sensor for measuring the temperature of the flowing water, wherein the second measuring device is based on the flow rate data of the flow meter and the temperature data of the first temperature sensor and the second temperature sensor. Saw Characterized by measuring the exothermic heat by Paneru.

  ADVANTAGE OF THE INVENTION According to this invention, the total of the electric power generation amount of photovoltaic power generation and the heat generation amount by a solar water heater can be managed collectively, and the energy produced | generated using sunlight is easy to manage. In addition, since the amount of heat generated by the solar water heater is calculated based on the temperature change amount of the water temperature by the solar panel and the amount of heated water, the generated heat amount can be accurately measured.

It is a block diagram which shows an example of the production | generation energy management apparatus which concerns on this invention. It is a circuit block diagram of a 1st measuring device. It is a block diagram of a 2nd measuring device. It is a block diagram of a management server. It is a screen figure which shows an example of the electric power generation amount display. It is a screen figure which shows an example of the electric power generation amount display. It is a screen figure which shows an example of the electric power generation amount display. It is a screen figure which shows an example of a production | generation heat amount display. It is a screen figure which shows an example of a production | generation heat amount display. It is a screen figure which shows an example of a production | generation heat amount display.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram showing an example of a generated energy management device according to the present invention, in which 1 is a distribution board, 2 is a solar power generation device, 3 is a solar water heater, and 4 is installed in the distribution board 1. A first measuring device that measures the power generated by the solar power generation device 2, 5 is a second measuring device that measures the amount of heat generated by the solar water heater, and 6 is an arithmetic device that calculates the total amount of generated power and the amount of generated heat. The management server 7 is a personal computer provided with a display 7a as a display device.

  In addition to the first measuring device 4, the distribution board 1 is connected to a main breaker 11, a plurality of branch breakers 12 for supplying power to various loads such as an air conditioner and lighting, and a solar power generation device 2. A container 13 or the like is installed. Reference numeral 14 denotes a current transformer as a current sensor for measuring the generated current of the solar power generation device 2.

  The solar power generation device 2 includes a solar cell panel 21, a connection box 22 for collecting electricity generated by the solar cell panel 21, a power conditioner 23 for connecting the generated electricity to commercial power, and the like.

  The solar water heater 3 includes a solar panel 31 that includes a heat collector that collects solar heat and heats the water, and a hot water storage tank 32 that stores the heated water (hot water). A water supply pipe W1 through which water flows in and a hot water storage pipe W2 through which heated hot water flows out to the hot water storage tank 32 are provided. A flow meter 33 and a first temperature sensor 34 are installed in the water supply pipe W1, and a second temperature sensor 35 is installed in the hot water storage pipe W2.

  FIG. 2 shows a circuit block diagram of the first measuring device 4. As shown in FIG. 2, the first measuring device 4 communicates with the voltage information input unit 41, the current information input unit 42, the power measurement processing unit 43, the arithmetic processing unit 44, the storage unit 45, and the management server 6. A LAN interface (LANIF) 46 and the like are provided. The voltage information input unit 41 is connected to the electric circuit L1 in the distribution board 1 and receives electric circuit voltage (also generated power) information. The current information input unit 42 is connected to the branch current path L2 of the switch 13 to which the photovoltaic power generation device 2 is connected, and the current information is input thereto. The power measurement processing unit 43 calculates power from the input voltage information and current information power. The power measurement process is performed under the control of the arithmetic processing unit 44, and the calculation result is output from the LANIF 46. The calculated power amount data is stored in the storage unit 45.

  FIG. 3 shows a circuit block diagram of the second measuring device 5. As shown in FIG. 3, the second measuring device 5 includes a sensor signal input unit 51, an arithmetic processing unit 52, a signal output unit 53, and the like. The sensor signal input unit 51 receives measurement signals from the flow meter 33, the first temperature sensor 34, and the second temperature sensor 35, and the arithmetic processing unit 52 calculates the amount of heat. At this time, the arithmetic processing unit 52 causes the signal output unit 53 to output a pulse signal every time a predetermined amount of heat is counted (for example, every time 1 MJ is counted).

FIG. 4 shows a circuit block diagram of the management server 6. As shown in FIG. 4, the management server 6 includes a LAN interface (LANIF) 61 for communicating with the first measurement device 4 and the personal computer 7, and a signal input unit 62 for obtaining heat quantity data from the second measurement device 5. A server CPU 63 that calculates the total amount of heat in addition to the amount of generated power, a server storage unit 64 that stores the calculation results, and the like are provided.
In addition, the server CPU 63 has a WEB page creation function, and in response to a browsing request from the personal computer 7, creates image data in which accumulated data of the generated power generation amount and generated heat amount are displayed on the WEB page as a graph or the like. To send.

  The server CPU 63 calculates the amount of power at predetermined time intervals (for example, every 10 minutes) based on the generated power data transmitted from the first measurement device 4, and the calculation result is stored in the server storage unit 64. Further, the calorific value per unit time (for example, 1 hour) is calculated based on the calorific value data transmitted from the second measuring device 5, and the calculation result is stored in the server storage unit 64.

5 to 10 show an example of a display screen in which the WEB page measured and created by the generated energy management apparatus having the above configuration is displayed on the display 7a of the personal computer 7. FIG. 5 to 7 display the power generation amount, and FIG. 5 displays the power generation status of one day as a line graph for each hour. In FIG. 6, the amount of generated power and the amount of power used for one week are displayed, and FIG. 7 shows the amount of generated power and the amount of power consumed by month. The power consumption is calculated by measuring the load current flowing through each branch breaker 12.
8 to 10 show the calorific value of the solar water heater. FIG. 8 displays the daily heat generation in units of one hour. FIG. 9 shows the generated heat quantity for one week in comparison with the generated heat quantity for the previous week, and FIG. 10 shows the generated heat quantity for each month. Switching of these displays is performed by a predetermined switching operation of the personal computer 7.

  In this way, the total amount of generated power by the solar power generator and the amount of heat generated by the solar water heater can be managed independently and collectively, and it is easy to manage the energy generated using sunlight. In addition, since the amount of heat generated by the solar water heater 3 is calculated based on the temperature change amount of the water temperature by the solar panel 31 and the amount of heated water, the amount of generated heat can be accurately measured.

  In the above embodiment, the first measuring device 4 is incorporated in the distribution board 1, but may be configured integrally with the management server 6. Moreover, although the flowmeter 33 which measures the flow volume of the solar water heater 3 is installed in the water supply pipe W1 of the solar panel 31, you may install in the hot water storage pipe W2.

  1 .... distribution panel, 2 .... solar power generator, 3 .... solar water heater, 4 .... first measuring device, 5. second measuring device, 6 .... management server (computing device), 7 .... personal Computer (display device), 14. Current transformer (current sensor), 21. Solar panel, 31. Solar panel, 32. Hot water storage tank, 33 ... Flow meter, 34 ... First temperature sensor, 35 .. Second temperature sensor.

Claims (1)

A first measuring device for measuring the power generated by the solar power generation device;
A second measuring device for measuring the amount of heat generated by the solar water heater,
An arithmetic device that calculates the total amount of generated power and generated heat based on output data of the first measuring device and the second measuring device;
A display device for displaying a calculation result of the calculation device;
The solar water heater has a solar panel for heating water and a hot water storage tank for storing heated water,
A flow meter for measuring a flow rate of water passing through the solar panel; a first temperature sensor for measuring a water temperature flowing into the solar panel; and a second temperature sensor for measuring a water temperature flowing out. The measuring device measures the amount of heat generated by the solar panel based on the flow rate data of the flow meter and the temperature data of the first temperature sensor and the second temperature sensor.

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