JPH0374143A - Power supply system - Google Patents

Abstract

PURPOSE:To increase the flexibility of a power supply system and to make it have versatility to various requests of load by providing plural power sources, plural power transmission means, and plural power conversion means. CONSTITUTION:A power receiving facility 1b which obtains power from an external power system 1a, a private power generation facility 1c, a congenerator facility 1d, a large capacity power storage device 2, a main power converter 1h, etc., constitutes a power supply source. Distribution facilities 3a-3f at each stage receive the power from the power supply source through distribution lines 11 and 11b, and send it to each power converter 5a-5l by distribution lines 12a-12c. By connecting plural power supply sources in series this way, it can supply power even if one power supply source downs, so power supply high in reliability is possible, and also according to the situation, the power at the lowest cost can be selected for supply.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a power supply system that supplies power to various loads from many types of power sources, and in particular, a configuration of a power supply system suitable for supplying power within a building. , control method, and operation method.

[Conventional technology]

The conventional power supply system is based on the Mitsubishi Electric Technique Vo 1
．． 60. As stated in Na5.1986J,
Power from the commercial AC system was supplied to the load via a transformer. For this reason, it was necessary to provide each load with a power conversion means to convert the power into the form of power required by the load.

Furthermore, in conventional power supply systems, two power transmission systems are provided: a regular power transmission device and an emergency power transmission device.

Since only the regular power transmission system is used at all times and the emergency system is used only in emergencies, there is no flexibility in the power supply format, and it is necessary to prepare a power source for uninterrupted power supply. This hinders the miniaturization of load devices.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, consideration was not given to flexibility in the form of power supply to the load, which was a factor that hindered miniaturization of the load device.

An object of the present invention is to provide a flexible power supply system that can meet various load demands.

Another object of the present invention is to provide a power supply system that allows maintenance and inspection of the system without stopping the power supply and that can constantly supply stable power.

Another object of the present invention is to provide a power supply system that saves energy and space.

Still another object of the present invention is to provide a power supply system that can flexibly respond to changes in power amount due to changes in load.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a plurality of power supply sources, a plurality of power transmission means, a plurality of power conversion means, and a circuit switching means, and connects the power supply source, the power conversion means, and the load device. It is equipped with a communication line and a judgment function that can judge the status of each device and issue instructions to each device.

[Effect]

By providing a power supply system with multiple power sources, multiple power transmission means, and multiple power conversion means, the flexibility of the system is increased, and changes in load, environment, etc. can be recognized and judged via a single communication line. This function is provided in the system, and each power converter converts the power required by the load into the required form and sends it to the load according to the instructions of this judgment function, resulting in efficient power generation. Supply becomes possible. Furthermore, since there is no need to add a power converter for each load, it becomes easier to downsize the load.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, and 4. The upper figure shows a circuit configuration diagram of the present invention, Figure 2 shows a specific configuration when the present invention is applied to the power supply system of the building 28, and Figure 3 shows the circuit configuration of the power converter according to the present invention. , and FIG. 4 shows an explanatory diagram of its operation.

First, in order to clarify the positioning of the present invention, the power supply system in Figure 0, which will be explained with reference to Figure 2, is a power receiving equipment that receives power from an external power system 1a such as a power purchase system from another building impurity or a commercial AC system. 1b, private power generation equipment 1c
, cogeneration facility 1d.

The large-capacity power storage bag w2, the main power converter 1h, etc. are used as power supply sources, and the power distribution equipment 3a to 3f on each floor receives power from the power supply source via the power distribution lines 11 and 11b, and the power distribution equipment 12a ~12c each power converter device 5a~51
send to If multiple power supply sources are connected in parallel as shown in the figure, power can be supplied even if one power supply source goes down, making it possible to provide highly reliable power supply.
Additionally, it is possible to select and supply the lowest priced electricity depending on the situation. Here, the main power conversion bag [1h is the power that can easily convert commercial AC power into the power form required by the load,
That is, power receiving equipment 3b, 3d converts the power into direct current or high frequency alternating current power and installs it on each floor.

Reduce the burden on 3f. As a result, the power receiving equipment 3b, 3
The circuit configurations of d and 3f can be simplified, the reliability of the power supply system can be improved, and the cost can be reduced. In addition, each floor is equipped with small-capacity power storage devices 4a to 4c, and by configuring a distributed power storage device consisting of the large-capacity power storage device 2 and the small-capacity power storage devices 4a to 4c, instantaneous power outages to the load can be achieved. It is possible to effectively prevent this and level the load capacity of the power supply source. Leveling the load capacity is
This is effective in reducing the installed capacity of power supply sources.

Here, the small-capacity power storage device is designed to have a high-speed response, and the small-capacity power storage device and the large-capacity power storage device are linked, so that instantaneous response in the event of a power outage is achieved by using the small-capacity power storage device.
Furthermore, if a large-capacity power storage device is used to cope with a power outage that continues for a long time, a distributed power storage device with high-speed response and large capacity can be constructed. Furthermore, power is supplied to each floor by transmitting commercial AC power through the distribution line 11, and by transmitting DC or high-frequency AC power obtained as the output of the power converter 1h through another distribution line 11b, making it possible to transmit power in two systems. . As a result, even if one system fails, power can be supplied from the other system, and stable power supply can be achieved.

Further, each device can be operated and monitored online by the host computer 9 via the communication line 13. Furthermore, by incorporating a microcomputer into each power supply source and each power conversion device, judgment functions such as selecting the operating state are added to each of the devices, thereby improving the flexibility of power supply. . Also, by doing this, even if the host computer 9 goes down,
Each device can stand alone and continue supplying power to the load.

In particular, FIG.
The detailed configuration of the circuits a to 16d is shown. In this figure, the power receiving equipment 1b, private power generation equipment 1c, etc. are collectively represented as a power supply source 1. The circuit configuration shown in the figure is characterized by power converters 5a to 5d and loads 16a to 16d.
A circuit switching means 6 is provided in which a grid-shaped distribution line is provided between the circuits and switches 7a to 7p are arranged at the intersections of the distribution lines. Therefore, by operating the switches 78 to 7p, one power converter can supply power to multiple loads according to the amount of power required by each load, or multiple power converters can be connected in parallel. It can be operated to supply power to one load.

It is highly unlikely that all loads will always require their maximum power, so if multiple power converters are operated as described above, the total power supply facility capacity will be reduced relative to the total load capacity. can be made smaller, and an efficient power supply system can be realized. Furthermore, non-stop maintenance and inspection of the system can be performed by stopping only the power conversion device that requires maintenance and inspection without stopping the entire system. In addition, as shown in FIG. 2, power receiving equipment 1b, private power generation equipment 1c, and cogeneration equipment 1d are also used as power supply sources.

Since it is equipped with a large-capacity power storage device 2, etc., each piece of equipment can be stopped individually for maintenance and inspection. The circuit switching means 6 is operated by a circuit switching control device 8. The control device 8 has a function of receiving a signal from the communication line 13 and determining whether to switch on or off. However, normally, the power conversion devices 5a to 5d and the circuit switching control device 8 are operated based on commands from the power conversion monitoring device 10a depending on the state of each load. For example, considering the case where each load is an air conditioner in a building, the power conversion monitoring bag [10a first determines the indoor environment using environmental sensors 15a to 15c such as an indoor temperature sensor and humidity sensor, and then controls the indoor environment. Set the output of each load, such as air conditioners, lighting equipment, audio equipment, etc. Note that for the lighting device, it is possible to set not only the illuminance but also the color tone. Here, the operation of each device will be explained using an air conditioner as an example. First, the environmental sensor 15 a =,1
5. Determine the indoor environment based on the detection result of c. Next, the amount of power required by each air conditioner, that is, the power form such as frequency and voltage required by each air conditioner, that is, each load, is determined from the output setting value of each air conditioner, and the circuit switching control device 8 and each power conversion device 5a to 5d are determined. Send driving commands to.

Further, each of the power conversion devices 58 to 5d is connected to the circuit switching means 6 from the power conversion monitoring device 10a via the high-speed communication line 14a.
information on the status of the system and determine the load to be transmitted. Further, the high-speed communication line 14a detects the state of the load to which power is to be transmitted, and transmits power to the load. The host computer 9 is
In coordination with the power conversion monitoring device 10a, the status of the power supply source, the distributed power storage devices 2, 4a, and the distribution installation 3a is grasped, and the entire power supply system is operated using energy saving and the like as a criterion.

However, in this system, even if the power conversion monitoring device 10a goes down, power can be supplied without stopping the entire system by making simple decisions using the circuit switching control device 8, the power conversion device, etc. as described above. You can now continue. In the figure, the reason why two communication lines consisting of the communication line 13 and the high-speed communication line 14a are provided is because the amount of information is small, but the load is This is because there are data that requires high-speed communication, such as information regarding the required power type, and data that requires slow but large-capacity communication in order to manage the entire power supply system on the host computer. It is. Here, the configuration is such that information exchange between the two communication lines is performed via the power conversion monitoring device 10a, but in consideration of the case where the power conversion monitoring device 10a goes down, the exchange of information between the two communication lines is It is also conceivable to provide a separate means of information exchange. Also.

Depending on the type of power supply system, more communication lines may be required.

In addition to the air conditioners mentioned above, the loads 16a to 16d in Fig. 1 include office automation equipment, elevators, security and disaster prevention equipment, etc.
General home appliances etc. can be considered, and the power conversion devices 5a to 5
d needs to supply power with arbitrary voltage waveforms in response to various loads. FIG. 3 shows the circuit configuration of a power conversion device for this purpose.

The power converter 5a shown in the figure includes a filter circuit including a diode rectifier 17, a reactor 18, and a capacitor 19, an inverter circuit 20 that generates an AC voltage e from a DC voltage Ed obtained as the output of the filter circuit, a transformer 22 for electrical insulation. A converter circuit 23 that generates an arbitrary output voltage V from an AC voltage e. Reactor 25 and capacitor 2
6, and a power conversion control circuit 27 that operates switch elements 21a to lid in the inverter circuit 20 and switch elements 24a and 24b in the converter circuit 23. In the inverter circuit 20, when the switch elements 21a and 21d are turned on, e=Ed
So, when the switch elements 21b and 21c are turned on, e
= −E d.

Further, in the converter circuit 23, the switch element 24a
When turned on, v=e, and the switch element 24b is turned on.
When N, v=-e. Due to such operating characteristics, the power conversion device 5a can output an arbitrary voltage waveform.

FIG. 4 shows operating waveforms when a sine wave output voltage is obtained using the circuit shown in FIG. (1) in the figure is the output voltage waveform e of the inverter circuit, and the solid line shown in (2) in the figure is (1).
) is the waveform of voltage V for generating a sine wave by the converter circuit. A sine wave voltage E is obtained from the voltage waveform V through an output filter circuit including a reactor 25 and a capacitor 26, as shown by the broken line in (2) of the figure. Another advantage of the output filter circuit is that a plurality of power converters can be operated in parallel by utilizing the impedance characteristics of the output filter circuit.

As described above, according to the power converter shown in FIG. 3, power can be supplied to the load in any form in response to various demands of the load.

Further, by incorporating a timer in the power conversion device 5a and setting the power supply time, power is supplied in accordance with the driving time of the load, thereby minimizing energy loss.

Furthermore, when supplying power from a plurality of power converters (5a to 5d) to one load (for example, to 16a) by the circuit switching means 6, the supplyable power of one power converter (5a) is reduced from 0% to You can freely set up to 100%, and the remaining power conversion bags [1 (5b to 5d) can be set to 0% or 1
By making it possible to supply only 00% power,
Any amount of power can be supplied to the load 16a. Moreover, in addition to reducing power loss, there are effects such as improving the life of the power/power converter and simplifying control.

5, 6 and 7 show other embodiments of the circuit switching means 6 shown in FIG. FIG. 5 shows power converters 5a to 5.
d to the power converter groups 29a and 29b, and the load 16
a to 16d are load group 30a.

30b, the power converter group 29a and the load group 30a
Further, the number of wires and the number of switches in the circuit switching means 6 are reduced by allowing circuit switching only between the power converter group 29b and the load group 30b.

However, in FIG. 5, power cannot be exchanged between the power converter group 29a and the power converter group 29b. Therefore, in FIG. 6, by loading the group switching means 31, a certain degree of power interchange can be achieved between the groups. In this way, stable power can be supplied depending on the importance of the load.

Further, in FIG. 7, the number of switches in the circuit switching means 6 is reduced by using common power a32a, 32b.

Thus, reducing the number of switches reduces the flexibility of power supply.

The reliability of the entire device can be improved, and the price of the power supply system can also be reduced.

FIG. 8, FIG. 9, FIG. 11, FIG. 13, FIG. 14, and FIG. 15 each show an embodiment regarding the power distribution equipment 3a. FIG. 10 and FIG. 12 show the configuration of a power conversion device 5a when the power distribution equipment 3a is used. FIG. 8 shows a transformer 33 for converting high-voltage power from the power supply source 1 into low-voltage power and for electrically insulating it, and a diode rectifier 17 in FIG. Reactor 18 and capacitor 19
A filter circuit according to the above is provided in the power distribution equipment 3a. In this case, the power distribution equipment 3a will be somewhat large, but each power converter 5 installed in large numbers will have a diode rectifier 17. Reactor 18 and capacitor 19
Since the filter circuit can be omitted, the equipment capacity of the entire system can be reduced.

9 uses a thyristor converter 34 instead of the diode rectifier 17 in FIG. 8, and a voltage detector 35. A current detector 36 and a power conversion control circuit 37 are added, and since the magnitude of the DC output voltage can be changed by controlling the phase of the thyristor converter 34, overcurrent can be prevented in the event of a short circuit accident on the DC side, etc. It is possible to prevent this and protect the equipment.

FIG. 10 shows a circuit configuration of a power conversion device 5a when the power distribution equipment 3a of FIGS. 8 and 9 is used. As mentioned above, this figure is a diagram in which the filter circuit of FIG. 3 is provided on the power distribution equipment 3a side, thereby simplifying the configuration of the power converter and reducing its size. Naturally, the other power converters 5b to 5d have similar configurations.

In Fig. 11, an inverter circuit 20 for converting DC power into AC power is also provided in the distribution equipment 3a. In this case, each power converter can further omit the inverter circuit, so as shown in Fig. 12. The circuit configuration is simple, consisting of only an output filter circuit composed of a transformer 22, a converter circuit 23, and a reactor 25 and a capacitor 26.

FIG. 13 shows a power distribution equipment 3a that has the functions shown in FIG. 3. In this case, any voltage waveform such as a square wave, two trapezoidal waves, and two frequency multiplexed waveforms can be formed by the power distribution equipment 3a. For example, if power is supplied to the power converters 5a to 5d using a single frequency multiplexed waveform, each power converter can be configured with only a filter circuit for separating one frequency, which not only makes it possible to downsize the power converter but also improves the device size. This has the effect of improving the reliability of the system.

FIG. 14 shows the distribution equipment 3a in FIG. 11 as a block 40a,
The power distribution equipment 3a of FIG. 8 is connected in series as a block 40b. In this case, the power distribution equipment 3a can form an AC/DC superimposed waveform, and can send AC power and DC power at the same time, allowing each power conversion device to easily convert the power into the power form required by the load. I can do it.

Figure 15 shows the current control of the power distribution equipment 3a in Figure 9 and the power distribution equipment 3a being used as a current source.If a superconducting coil is used as the reactor 18, a power storage function can be added, and it is small and efficient. A good power storage device can be realized. In this case, the power converters 58 to 5d are connected and disconnected by operating the switches 41a to 41d.

Figures 8, 9, 11, 13, and 1 mentioned above
4 If the circuit configuration of the power distribution equipment 3a in Figures 5 and 15 is applied to the main power converter 1h, it is possible to downsize the power distribution equipment and further reduce the Ha capacity of the entire system. It has the effect of

FIG. 16 shows an embodiment of the power conversion monitoring device 10a,
FIG. 17 shows another embodiment of the power conversion monitoring device 10a, FIGS. 18 and 19 show the detailed internal configuration of FIG. 17, and FIG. 20 explains the operation of FIG. 19. It is a diagram. In FIG. 16, the power conversion monitoring device ↓Oa has an information input function 10b that takes in information about the environment in the building necessary for operating the power conversion devices 58 to 5d and the circuit switching control device 8, and An environment judgment function 10c that makes a judgment, a received power judgment function 10d that judges the electric power reception status in the building, and creates operation commands for the power converters 5a to 5d and the circuit switching control device 8 based on the captured information and the judgment result of the electric power reception status. It is provided with an operation command creation function 10e to perform the operation command, and a command output function 10f to output the created operation command. Power conversion monitoring device 10a
The specific operation will be explained using an example. For example, considering the case where the load 16 a = L 6 d is an air conditioner,
Environmental sensors 15a distributed throughout the building
=15c, the information input function 10b takes in environmental information such as indoor temperature and humidity, and the environmental judgment function 10
In step c, the deviation of the temperature and humidity relative to the indoor temperature and humidity that are comfortable for humans is determined.

Furthermore, loads 16a to 16d, power converters 58 to 5d
, information regarding the status of the small-capacity power storage device 3a and the power reception status of the entire building from the host computer is taken in through the information input function 10b, and the received power determination function 10d determines the current power supply status of each device. Next, in order to create the optimal indoor environment for humans with the amount of power that the power supply system can supply, create operating instructions to determine which power converter should transmit the amount of power and with what specifications. The function 10e determines the operation command, the command output function 10f creates an operation command for operating the power conversion devices 5a to 5d and the circuit switching control device 8, and transmits the control command to the power conversion devices 5a to 5d and the circuit switching control device 8. do.

In this way, by providing the power conversion monitoring bag W 10 a, it is possible to supply power according to the situation of the entire system, and there is an effect that efficient power supply can be performed. Note that it is also possible to add the function of this power conversion monitoring device 10a to each power conversion device.

FIG. 17 shows another embodiment of the power conversion monitoring device 10a. In this embodiment, the power conversion monitoring device 10a
The system is composed of a neural network 42a suitable for patterning and making judgments like indoor environment information, and a fuzzy controller 42b suitable for flexible environmental control corresponding to human sensitivity such as sensible temperature. The neural network 42a shown in the figure is composed of a plurality of neurons 43a to 43i as shown in FIG. The neurons can be roughly divided into inputs/i 143a and 43d that receive signals from the outside and output multiple signals to neurons in the next layer.

43g, and intermediate layers 43b and 43 that multiply the signal from the input layer by weight (magnification) and output it to each neuron of the next layer.
e, 43h, an output layer 43c which operates in the same way as the intermediate layer but performs only one output to the outside;

It consists of 43f and 43i. The indoor environment information detected by the environment sensors 15a to 15c is input to the input layer, and the deviation between the comfortable environment and the current indoor environment, such as temperature deviation and humidity deviation, is detected via the intermediate layer whose weight is determined in advance. A value corresponding to can be output from the output layer. Each neuron has a product-sum function 44a and a nonlinear function 45 as shown in FIG.
By setting the value of the magnification Wi of the input signal Xi in FIG. 1, the relationship of the output signal Y to the input signal X 1 =Xo can be arbitrarily determined. That is,
If such a neuron is configured as shown in Figure 18,
If the value of the magnification Wi in each neuron is adjusted in advance according to the indoor situation, the above deviation of the indoor environment can be obtained as an output. When such a neural network 42a is used, the input signal X at each neuron
By changing the value of the magnification Wi (i: integer) of i, the amount of deviation from the optimal environment for humans can be detected in response to various indoor situations. Furthermore, by adding a learning function, the above-mentioned Wi can be determined automatically.

Next, the operation of the fuzzy controller 42b will be explained with reference to FIG. Figure 20 (1) shows seven membership functions whose parameters are deviations from the optimal value of the indoor environment.
), PM (Positive Medium)
.

P S (Positive Small), Z
O (Zero), N S (Negative Sm)
all), NM (Negative Mediu)
m).

It represents the distribution of NB (Negative Big). Here, each membership function represents a statistical distribution regarding human sensitivity; for example, ZO is a distribution regarding the probability of a deviation amount that a person perceives as an optimal environment.

Using the membership function in the figure, for example, if the temperature deviation is X in the figure, and the humidity deviation is y in the figure, then
ZOl with the smallest value among the membership functions with the value of and PS with the smallest value among the membership functions with the value of y
As a result, the area indicated by diagonal lines in Fig. 2Q (2) is obtained. An optimal indoor environment can be maintained by obtaining a value of 2 from the center of gravity of this region and changing the amount of power supplied to the corresponding load by this value of 2. Therefore, it is possible to create an operation command to operate the power conversion devices 5a to 5d and the circuit switching control device 8 so as to create an optimal indoor environment for humans, and to operate the power conversion bags [5a to 5d and the circuit switching control device 8]. becomes possible.

If such a fuzzy controller 42b is used to form the above membership function in response to human sensitivity such as sensible temperature, an environment that humans feel is optimal can be maintained.

According to the above-described power conversion monitoring device 10a, the indoor environment can be maintained in an optimal state for humans, and efficient energy conditioning can be performed in accordance with human sensibilities, thereby making it possible to effectively save energy.

Furthermore, it is also possible to store the importance level and required amount of power of each load in the power conversion monitoring device 10a in advance to ensure power supply to important loads in the event of an emergency such as a momentary power outage.

Next, a method for managing the system using the host computer 9 will be explained with reference to FIGS. 21, 22, and 23. Managing the system requires the ability to identify each component. For this reason, each device is provided with a storage means for storing the identification code. FIG. 21 shows an example in which the power converter 5a is provided with a storage means 48a.
a can be operated by a control circuit 47a of the power conversion device 5a. That is, the control circuit 47a receives the identification code assigned from the host computer 9 via the communication R1A13 and stores it in the storage means 48a. Further, in response to a request from the host computer 9, the identification code stored in the storage means 48a is sent to the communication line 13.
Output to. Here, the block 46a is the power converter 5
The main circuit of a is shown. By providing such a storage means in each component device, the host computer 9 can identify each component device and manage the entire power supply system.
Additionally, adding or deleting component devices, changing the system configuration, etc. can be easily done by simply changing the contents of the identification code. Furthermore, by adding automatic identification code generation and automatic operation functions to the host computer 9, users of the power supply system can easily expand and change the functions of the system without being aware of the identification code.

FIG. 22 and FIG. 23 are explanatory diagrams of the method of operating the storage means. First, when a system is configured with devices 49a to 49d and 49f to 49h as shown in FIG.
Consider the case where 9e is connected to the system. If the identification code of each device is as shown in the figure before connecting the device 49e, the device 49e
The identification code is undefined. The host computer 9 detects this and uses an identification code (
In this case, 7) is automatically generated and written into the storage means in the device 49e, resulting in the system configuration shown in FIG. Although only the identification code has been described above, the specifications of each device can be stored together with the identification code, and efficient management can be realized by using the identification code and specifications. If such a function is added to the system, the host computer 9 can manage each device using an identification code. Furthermore, since the host computer 9 automatically generates the identification code, the system can be easily changed. Furthermore, it is easy to identify a failed device, the effects of an accident can be minimized, and a highly reliable system can be achieved. Furthermore, it is also possible to use this host computer to determine important loads and command power transmission, as described in the explanation of the power conversion monitoring device above.

[Effects of the Invention] The effects of the present invention are that it is equipped with a plurality of power conversion devices that can supply power in any form, and that the output of each power conversion device can be connected to any load. It can respond to demand and provide flexible power supply, and it also allows system maintenance and inspection without stopping the power supply, and provides stable power supply at all times.

Furthermore, since the total installed capacity of the power supply system can be made smaller than the maximum load capacity, energy and space savings can be achieved.

[Brief explanation of drawings]

Fig. 1 shows the circuit configuration of the present invention, Fig. 2 shows an example in which the invention is applied to a building, Fig. 3 shows the circuit structure of the power converter according to the invention, and Fig. 4 shows the operation explanatory diagram of Fig. 3. Figure 5, Figure 6,
and FIG. 7 show another embodiment of the circuit switching means, and FIG.
The figure shows an example of the power distribution equipment, Figure 9 shows another example of the power distribution equipment, Figure 10 shows another example of the power converter, Figure 11 shows another example of the power distribution equipment, and Figure 12 shows another example of the power distribution equipment. Figures 13, 14, and 5 are other examples of power distribution equipment, Figure 16 is an example of a power conversion monitoring device, and Figure F 8 and 19 are detailed explanatory diagrams of FIG. 17, and FIG. 20 is a detailed explanation of FIG. 19.
FIG. 22 is an explanatory diagram of the operation of the figure, and FIG. 22 is another embodiment of the power converter. FIG. 23 is an explanatory diagram of a method of operating the storage means. 1... Power supply source, 2, 4... Power storage device, 3.
...Power receiving equipment, 5...Power conversion device, 6...Circuit switching means, 8...Control device, 9...Host computer, Fig. 2, Fig. 4, Fig. 5, Fig. Figure 10 Figure 12 Figure 11 Figure 14 Figure 15 Figure 18 Figure 19 Figure 20 Figure 21 Figure a

Claims (1)

[Claims] 1. Electric power consisting of a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the power converted by the plurality of power conversion devices. A power supply system comprising means for connecting the output terminals of the plurality of power conversion devices to arbitrary loads according to the form of power required by each of the loads. 2. In a power supply system consisting of a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the power converted by the plurality of power conversion devices, each of the above-mentioned Classify loads into multiple load groups,
Further, the plurality of power conversion devices are classified into a plurality of power conversion device groups corresponding to each of the load groups, and each of the load groups and each power conversion device group is classified into one power supply group. An electric power supply system characterized in that the electric power is supplied within the electric power supply group. 3. The power supply according to claim 2, further comprising means for changing the classification of the power converter group corresponding to the load group when the aspect of the power required by the load group changes. system. 4. The power supply system according to claim 2, wherein the load groups are classified according to the type of power required by the loads. 5. In claim 2, power supply changing means is provided for receiving power supply from a converter group of another power supply group to the power supply group when the amount of power required by the load group changes. A power supply system characterized by the following: 6. In a power supply system consisting of a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the power converted by the plurality of power conversion devices, the power supply system includes: A power supply system characterized in that a plurality of power storage means are provided in parallel with a supply source. 7. In claim 6, the plurality of power storage means have different response speeds or capacities, and the response speed,
Alternatively, a power supply system characterized in that the power supply system is distributed within the system according to capacity. 8. In a power supply system consisting of a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the power converted by the plurality of power conversion devices, the total load A power supply system characterized by a small total power supply facility capacity compared to the capacity. 9. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the power converted by the plurality of power conversion devices, the power supply system includes: A power supply system characterized in that each of the power converters has a function of transmitting and receiving information necessary for operating the converter, and a communication line is provided for exchanging the information between the power converters. 10. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the power converted by the plurality of power conversion devices, the power supply system includes: A power supply system characterized in that the power supply source can arbitrarily set a power transmission form from the power supply source to the power conversion device. 11. In claim 10, the power transmission mode is one of direct current, commercial alternating current, high frequency alternating current, direct current/ac superimposed waveform, frequency multiplexing, square wave, and trapezoidal wave, and the power conversion A power supply system characterized by supplying power to a device in a set power form. 12. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the power converted by the plurality of power conversion devices, the power supply system comprises: It is possible to supply two types of power, direct current and alternating current, from a supply source, and includes two types of power transmission lines, a power transmission line that transmits direct current and a power transmission line that transmits alternating current, to supply power to each of the power conversion devices. A power supply system characterized by: 13. In claim 12, the DC/AC superimposed waveform region on the power transmission line that transmits the AC is a frequency multiplexed waveform, a square wave,
A power supply system characterized by transmitting power of any one of trapezoidal waves. 14. In a power supply system consisting of a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the power converted by the plurality of power conversion devices, a plurality of A power supply system comprising means for providing power supply sources with different characteristics and supplying power from the plurality of power supply sources to each of the power conversion devices. 15. The power supply system according to claim 14, further comprising selection means for selecting the power supply source according to the state of each power supply source or the request of each power conversion device. 16. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the power converted by the plurality of power conversion devices, the power supply system comprises: A power supply system characterized in that a superconducting wire is used for a power transmission line between a supply source and each of the power conversion devices. 17. Electric power consisting of a power supply source, a plurality of power conversion devices that convert the power from the power supply source according to the demand of the load, and a plurality of loads driven by the power converted by the plurality of power conversion devices. A power supply system characterized in that the power supply source is a voltage source or a current source. 18. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion device, the power supply source and a rectifier circuit is provided between each of the power converters, the rectifier circuit is composed of a diode element, a thyristor element, or a self-extinguishing element, and supplies DC power to each of the power converters. supply system. 19. In claim 18, each of the power conversion devices includes an inverter circuit that converts the DC power to high-frequency AC power, a frequency conversion circuit that converts the high-frequency AC power to power of an arbitrary frequency, and a link between the power source and the load. A power supply system characterized by comprising a transformer for insulation. 20. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion device, the power supply source A power supply system characterized in that a high frequency AC generating circuit is provided between the power converter and the power converter, and high frequency AC power is supplied to each of the power converters. 21. The power supply system according to claim 20, wherein the high frequency generation circuit is configured with an inverter circuit or a resonant circuit. 22. In claim 21, each of the power conversion circuits includes a frequency conversion circuit for converting the high-frequency AC power into power of an arbitrary frequency, and a transformer for providing insulation between the power source and the load. A power supply system characterized by: 23. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion device, the power supply source and an AC/DC superimposed wave generation circuit between each of the power converters. 24. The power supply system according to claim 23, wherein the AC/DC superimposed wave generation circuit is constructed of a series or parallel circuit of a DC voltage generation circuit and an AC voltage generation circuit. 25. The power supply system according to claim 24, wherein each of the power converters is provided with a rectifier circuit for extracting DC power or a transformer for extracting AC power. 26. In a power supply system consisting of a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion device, the demand of the load 1. A power supply system, characterized in that the power conversion device is provided with a function of changing a power supply form to the load according to a power form to be supplied to the load. 27. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion device, each of the power conversion devices A power supply system characterized in that a filter circuit including a reactor and a capacitor is provided at an output terminal of the device to enable parallel operation of the plurality of power conversion devices. 28. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion device, each of the power conversion devices 1. A power supply system characterized in that an input terminal of the device is provided with one or both of harmonic suppression means and reactive power compensation means. 29. In a power supply system consisting of a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion device, the 1. A power supply system characterized in that, when power is supplied to a power conversion device in a frequency multiplexed waveform, the power conversion device is provided with a filter circuit for extracting a frequency required by a load. 30. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion devices, solar radiation, wind, A detector for detecting the indoor environment such as temperature, humidity, presence or absence of a person is provided, a determination means for determining the indoor environment based on the detection result of the detector, and a determination means for adjusting the indoor environment based on the determination result. A power supply system characterized by adding an adjustment function to adjust the power supplied to a load. 31. The power supply system according to claim 30, wherein the load that adjusts the indoor environment is an air conditioner or a lighting device. 32. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion device, each of the power conversion devices A transmitting/receiving device and a communication line are installed to transmit the information necessary for operating the device to each power conversion device.
A power supply system characterized in that detectors for obtaining information necessary for operation of each of the power converters are distributed over the communication line. 33. In a power supply system comprising a power supply source, a plurality of power conversion devices that convert power from the power supply source, and a plurality of loads driven by the output of the power conversion device, each of the power conversion devices A power supply system characterized in that the device is provided with a display function that displays the operating status. 34. In a power supply system comprising a plurality of power supply sources, a plurality of power conversion devices that convert power from the plurality of power supply sources, and a plurality of loads driven by the output of the power conversion devices, A communication line is provided for transmitting information necessary for the operation of the plurality of power converters from the plurality of power supply sources or the plurality of loads, and for transmitting the operating status of the power converter to the power supply source, power converter,
A power supply system characterized in that a code for identifying each of the power supply sources and each of the loads is provided, and means for storing the code is provided in each of the power conversion means and each of the power supply sources. 35. Claim 34, wherein a code for identifying each power conversion device, each power supply source, and each load is generated on the communication line, and a code for identifying each power conversion device, each power supply source, and each load is generated, and 1. A power supply system comprising a management means for storing and managing data in a storage means provided in a power source. 36. In a power supply system comprising a plurality of power supply sources, a plurality of power conversion devices that convert power from the plurality of power supply sources, and a plurality of loads driven by the output of the power conversion devices, Means for distinguishing each of the above-mentioned loads into important loads that are affected by instantaneous power outages and general loads for which instantaneous power outages are not a problem, means for comparing the total load capacity and total power supply capacity, and stopping power supply to the general loads. A management device is provided with a means for A power supply system comprising: a function of issuing a command to each of the power conversion devices to supply the power. 37. In a power supply system comprising a plurality of power supply sources, a plurality of power conversion devices that convert power from the plurality of power supply sources, and a plurality of loads driven by the output of the power conversion devices, A power supply system comprising: means for reserving operating time for each of the power conversion devices. 38. In a power supply system comprising a plurality of power supply sources, a plurality of power conversion devices that convert power from the plurality of power supply sources, and a plurality of loads driven by the output of the power conversion devices, When operating multiple power converters connected in parallel or in series to supply power to one load, one of the multiple power converters operates at less than 100% of its output power capacity, and the remaining An electric power supply system characterized in that it operates at 0% or 100% of its output power capacity. 39. A power receiving device for receiving commercial power, power transmission equipment that transmits the power received by the power receiving device to a plurality of power conversion devices installed on each floor, and a power distribution device that distributes power from the conversion device to its load. In the building power supply system, the power receiving device has a function of converting the commercial power into a power specification that takes into consideration power transmission efficiency, a function of storing a part of the received power and extracting it when necessary, and a function of the power receiving device. The power transmission equipment includes a means for generating power separately from commercial power, the power transmission equipment has a function of transmitting power of a plurality of power specifications for each power specification, and each of the power conversion devices can receive the power of the plurality of power specifications. and having a function of converting the received power into power specifications required by a load, and each power distribution device transmits the necessary power specifications to each power conversion device in accordance with a request of the load. An in-building power supply system characterized by having a function of determining a power supply route to each of the power conversion devices and the load, and controlling the power supply route.