CN104391499A - An analog electric energy meter and testing method for testing electric power centralized reading system - Google Patents

Abstract

The invention discloses an analog electric energy meter and a test method for testing an electric power centralized meter reading system, which are matched with 485 modules or serial server equipment, can realize comprehensive and reliable test of meter reading processes and algorithms of a concentrator by setting electric energy meter operation rules and operating the electric energy meter according to the set operation rules on the basis of realizing common electric energy meter setting and inquiring electric energy meter data. The invention solves the problems of insufficient test comprehensiveness and great test implementation difficulty of the concentrator meter reading flow and algorithm in the automatic meter reading system; the problems that the test environment for constructing a complex real object environment is long in time consumption, high in cost and low in test efficiency when the abnormal environment of the test carrier and the micropower meter reading system is required to be constructed are solved; by adopting the test method, the concentrator meter reading flow and algorithm test in the automatic meter reading system can achieve comprehensiveness, and the test method is more economical and more efficient.

Description

An analog electric energy meter and testing method for testing electric power centralized reading system

technical field

The present invention relates to an equipment device and a corresponding test method for testing purposes in a centralized electric power reading system, in particular to an analog electric energy meter and a testing method for testing a centralized electric power reading system.

Background technique

The 2014 Smart Grid Survey by U.S. Utilities shows that the most important smart grid application area today is smart meters/automatic meter reading (AMR)/advanced meter infrastructure (AMI). In my country, the State Grid stated in the work summary of the first half of 2014, "Actively promote the construction of the smart grid, newly installed 33.26 million smart meters, a total of 220 million installed, and realized the automatic collection of electricity consumption information for 230 million households." Visible, automatic The meter reading system has been quite popular both in the world and in our country.

The network of the automatic meter reading system generally has four network nodes: the main station, the concentrator, the collector, and the electric meter. The communication between the concentrator and the collector or the electric meter is currently mainly through several media methods: narrowband carrier, RS485 and micro-power wireless etc. The concentrator will communicate directly with the collector or meter through these media, adopt certain meter reading process and algorithm, collect information point data, and then report the data to the master station through GPRS and other communication means.

At present, in the industry, in the process of product development and testing, the testing of the meter reading process and algorithm of the concentrator is generally carried out by using an electric meter or an analog electric meter to set up a carrier environment. However, this kind of laboratory environment can only test the normal process and algorithm. The actual on-site environment of the system application is often more complicated, and more needs to be considered are some abnormal situations, such as:

1. Energy meters that cannot be collected (such as power outages at the meter end, abnormal media channels such as carrier waves, etc.)

2. The electric energy meter could be collected normally, but now it cannot be collected normally (abnormal collector, abnormal electric energy meter)

3. It was impossible to collect electric energy meters (the meter file exists), but now it can be collected normally.

4. Abnormal energy meter:

A. Daily frozen data items are not supported (deny/non-response)

B. Daily frozen time scale does not support (deny/no answer)

C. Block data reading is not supported (deny/no response)

D. Sub-copy data does not support (deny/non-response)

5. 97 statute energy meter support.

6. The meter reading is unstable: it cannot be read successfully before 3 o'clock, but it can be collected successfully after 3 o'clock. or in other cases the timing is different.

7. Some other occasional failures or events in the long-term stable operation environment.

Therefore, the comprehensiveness of this method is quite different from the test requirements. At present, the industry needs to test these abnormal conditions by adding some specific interference to the power line carrier line, RS485 line, and micro-power wireless air frequency band, and using some specific faulty meters, etc., but in this way, The complexity of the environment and the difficulty of implementation are relatively large, and it is not practicable in daily R&D testing.

Contents of the invention

In order to solve the problems that the concentrator meter reading process and algorithm test are not comprehensive enough and the test implementation is difficult in the automatic meter reading system, the invention proposes a method for realizing an analog electric energy meter for testing. On the basis of setting and querying the data of the ordinary analog electric energy meter, the present invention can realize the above-mentioned various abnormalities by setting the analog electric energy meter without building a complex carrier wave or micro-power wireless abnormal environment Under this condition, a comprehensive and reliable test of the meter reading process and algorithm of the concentrator is realized.

Technical solutions:

An analog watt-hour meter for testing a power centralized reading system, which includes:

RS485 driver module: as an interface for interacting with the concentrator, providing a transmission channel;

Configuration module: configure the display value and movement rules of the analog electric energy meter data module or data items; configure the response strategy of the meter reading processing module to the concentrator or collector;

Meter reading processing module: answer and read the data of the analog electric energy meter data module, respond to the meter reading command of the collector or concentrator; configure different response strategies to simulate the application environment of the engineering site;

Analog energy meter data module: By configuring the display value and movement pattern, it can simulate various functions and data of the actual energy meter.

More specifically, the indicated value includes one or more of the following: electric energy indicated value, maximum demand and occurrence time, voltage, current, active power, reactive power, power factor, apparent power, date, time, Record events, meter running status, meter parameters, and meter parameters.

More specifically, the response strategy includes one or more of the following: normal response, no response, negative response, frame delay (settable) response, byte delay (settable) response, normal response frame Add pre-byte FE (number can be set) response, normal response frame plus post-byte (setting) response, random code stream contains normal frame response, random probability response (random probability can be set), fixed period response , wrong frame header response, wrong frame tail response, wrong check code frame response, wrong data identification response, wrong follow-up frame label response, wrong address response, wrong data length response, wrong data body response, add data block identification word ( AA) response, support DL/T645-2007 multi-function electric energy meter communication protocol, DL/T645-1997 multi-function electric energy meter communication protocol.

A kind of testing method based on the electric power centralized reading system of analog electric energy meter disclosed by the present invention, it comprises the following steps:

1) Build a test environment, and connect the analog energy meter to the concentrator or collector through the RS485 drive module;

2) Through the configuration module, configure the data of the analog electric energy meter data module, including the indication value and the running pattern;

3) Configure the response strategy of the meter reading processing module to the concentrator or collector through the configuration module;

4) The concentrator starts the meter reading process and issues the corresponding meter reading command to the analog electric energy meter;

5) The RS485 driver module reports to the meter reading processing module after receiving the meter reading command;

6) The meter reading processing module reads the real-time or configured corresponding content of the analog electric energy meter data module according to the content of the meter reading command, and then according to the response strategy configured by the meter reading processing module itself, gives the concentrator or collector through the RS485 drive module corresponding response;

7) Check the meter reading result after timing or after a meter reading cycle ends.

In the step 2), the analog electric energy meter data is configured through the electric meter information box.

In the step 3), the response strategy is configured through the meter operation rule box.

Beneficial effects of the present invention:

By adopting the test method of the analog electric energy meter and the electric meter reading system disclosed in the present invention, through the different response algorithms and strategies of the meter reading processing module to the meter reading commands of the concentrator or the collector, it can be realized under the condition of limited resources and time consumption. It is aimed at the simulation of various abnormal meters and lines on the engineering site. Through large-scale deployment, the simulation of the actual on-site environment can be realized. Through the test environment built by the present invention, the meter reading process and algorithm of the concentrator can be quickly and effectively tested for practicality, which solves the problem of long cycle, large investment, and on-site testing that existed in previous tests of this type. question.

Description of drawings

Figure 1 is a schematic diagram of the simulated field test environment (overall network diagram)

Figure 2 is a schematic diagram of the interaction between the analog energy meter and the concentrator or collector through RS485

Figure 3 is a flowchart of the use of analog energy meters

Detailed ways

The present invention will be further described below in conjunction with embodiment, but protection scope of the present invention is not limited to this:

Combining Figure 1 and Figure 2, the test analog energy meter runs on the computer as a software, and interacts with the concentrator or collector through RS485, specifically including the following modules:

RS485 driver module: as an interface for interacting with the concentrator, providing a transmission channel;

Configuration module: configure the display value and movement pattern of the analog electric energy meter data module, the display value includes electric energy display value, voltage, current and event; configure the response strategy of the meter reading processing module to the concentrator or collector, the response Strategies include non-response, response time, response regularity;

Meter reading processing module: answer and read the data of the analog electric energy meter data module, respond to the meter reading command of the collector or concentrator; configure different response strategies to simulate the application environment of the engineering site;

For example:

1. By configuring the non-response strategy, simulate the abnormality of media channels such as energy meters or carriers that cannot be collected;

2. By configuring the time-period response strategy to simulate the energy meter that could be collected normally, but now it cannot be collected normally (the meter is abnormal, and the collector is abnormal).

3. By switching the non-response strategy to the response strategy, it is simulated that the electric energy meter could not be collected before, but now it can be collected normally.

4. Simulate abnormal electric energy meters by configuring deny and non-response strategies

A. Daily frozen data items are not supported (deny/non-response)

B. Daily frozen time scale does not support (deny/no answer)

C. Block data reading is not supported (deny/no response)

D. Sub-copy data does not support (deny/non-response)

5. By configuring DL/T645-1997 multi-function electric energy meter communication protocol strategy to simulate 97 protocol electric energy meter.

6. Simulate the instability of meter reading by configuring the response strategy of the timing period. For example, the meter reading cannot be successfully read before 3 o'clock, but the collection can be successful after 3 o'clock, or the time is not available in other cases.

7. Simulate some other occasional failures or events in a long-term stable operation environment by configuring a random response strategy.

8. Simulate carrier, 485 and other media channel transmission signal distortion, interference and line crosstalk by configuring wrong frame strategy.

9. Simulate the different communication processing speeds of electricity meters in different ages by configuring the delay strategy.

Analog energy meter data module: By configuring the display value and movement pattern, it can simulate various functions and data of the actual energy meter.

With reference to Figure 3, the steps of the test method are as follows:

1) Build a test environment, and connect the analog energy meter to the concentrator or collector through the RS485 drive module;

2) Through the meter information box, configure the data of the analog electric energy meter data module, including the indication value and the running pattern;

3) Configure the response strategy of the meter reading processing module to the concentrator or collector through the meter operation rule box;

4) The concentrator starts the meter reading process and issues the corresponding meter reading command to the analog electric energy meter;

5) The RS485 driver module reports to the meter reading processing module after receiving the meter reading command;

6) The meter reading processing module reads the real-time or configured corresponding content of the analog electric energy meter data module according to the content of the meter reading command, and then according to the response strategy configured by the meter reading processing module itself, gives the concentrator or collector through the RS485 drive module corresponding response;

7) Check the meter reading result after timing or after a meter reading cycle ends.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (6)

1., for a simulation electric energy meter for AMRS test, it is characterized in that it comprises:

RS485 driver module: carry out mutual interface as with concentrator, transmission channel is provided;

Configuration module: configuration simulation electric energy meter data module or the indicating value of data item, rule of having good luck; Configuration is checked meter the acknowledgment strategy of processing module to concentrator or collector;

To check meter processing module: the data of simulation electric energy meter data module are read in response, respond the order of checking meter of collector or concentrator; By configuring different acknowledgment strategys, with the applied environment at model engineering scene;

Simulation electric energy meter data module: by configuration indicating value and rule of having good luck, to simulate various functions and the data of actual power table.

2. a kind of simulation electric energy meter for AMRS test according to claim 1, is characterized in that described indicating value comprises following one or more: electric energy indicating value, maximum demand and time of origin, voltage, electric current, active power, reactive power, power factor, applied power, date, time, recording events, ammeter running status, ammeter parameter, ammeter parameter.

3. a kind of simulation electric energy meter for AMRS test according to claim 1, it is characterized in that described acknowledgment strategy comprises acknowledgment strategy and comprises following one or more: normal response, do not reply, deny response, frame delayed response, byte delayed response, normal response frame adds prefix byte FE and replys, normal response frame adds postbyte response, containing normal frame response in random bit stream, random chance is replied, the response of timing section, wrong frame header response, wrong frame telegram end response, wrong check code frame response, wrong Data Identification response, wrong subsequent frame mark response, the response of wrong address, wrong data length response, wrong data volume response, add the response of data block identifier word.

4. a method of testing for AMRS, is characterized in that it comprises the following steps:

1) build test environment, simulation electric energy meter is connected with concentrator or collector respectively by RS485 driver module;

2) by configuration module configuration simulation electric energy meter data module comprise indicating value, the data of rule of having good luck;

3) to be checked meter the acknowledgment strategy of processing module to concentrator or collector by configuration module configuration;

4) concentrator starts flow process of checking meter, and issues corresponding order of checking meter to simulation electric energy meter;

5) RS485 driver module reports processing module of checking meter after receiving order of checking meter;

6) processing module of checking meter is according to the content of order of checking meter, read the corresponding contents of the real-time or configuration of simulation electric energy meter data module, then according to the acknowledgment strategy of processing module self configuration of checking meter, concentrator or collector respective response is given by RS485 driver module;

7) timing or an end cycle of checking meter after, check result of checking meter.

5. the method for testing of a kind of AMRS according to claim 4, is characterized in that step 2) in by ammeter information frame configuration simulation electric energy meter data.

6. the method for testing of a kind of AMRS according to claim 4, is characterized in that step 3) in by ammeter operation rule frame configuration acknowledgment strategy:

1) by configuring not acknowledgment strategy, to simulate the abnormal medium of the media channel such as the electric energy meter that cannot collect or carrier wave abnormal;

2) originally can normal acquisition electric energy meter by the simulation of configuration timing section acknowledgment strategy, now can not normal acquisition (ammeter is abnormal, and collector is abnormal);

3) former electric energy meter cannot be gathered by switching not acknowledgment strategy to acknowledgment strategy simulation, now can normal acquisition;

4) denied by configuration, not acknowledgment strategy simulate abnormal electric energy meter

A, day freezing data item do not support;

B, day freeze markers and do not support;

C, blocks of data read and do not support;

D, point copy data and do not support;

5) by configuration DL/T645-1997 multifunctional electric energy meter communication protocol policy-simulative 97 stipulations electric energy meter;

6) simulate by configuration timed period acknowledgment strategy instability of checking meter;

7) by some other accidental failure or events in configuration random challenge policy-simulative running environment steady in a long-term;

8) by the wrong frame policy-simulative carrier wave of configuration, the distortion of media channel signal transmission, interference, the circuit crosstalks such as 485;

9) by configuring the different communication process speed of delaying policy simulation various years ammeter.