CN205120850U - Primary equipment of transformer substation state analogue means - Google Patents

Abstract

The primary equipment state simulation device of the substation involves the simulation device of the primary equipment of the substation; at present, the secondary equipment debugging of the expansion (reconstruction) part of the expansion (reconstruction) substation needs to carry out the whole set of transmission test together with the primary equipment, and the shutdown time is long. The utility model includes a box body, a simulated circuit breaker circuit, a simulated operation knife switch circuit, and a control power switching circuit. The control keys include a manual closing key and a manual trip key. A group of analog circuit breaker circuits are equipped with A-phase closing key, A-phase opening key, B-phase closing key, B-phase opening key, C-phase closing key and C-phase opening key, and signal lights; each group of analog remote control operation The switch knife circuit is equipped with a closing key, an opening key and a signal light. During the outage period of the primary equipment, the technical solution only needs to complete the transmission of the entire set of primary equipment such as protection and measurement and control devices, which greatly reduces the outage time of the primary equipment in the substation.

Description

Substation Primary Equipment Status Simulator

technical field

The utility model relates to a simulation device for primary equipment of a substation, in particular to a state simulation device for the primary equipment of a substation.

Background technique

The secondary equipment commissioning of the expansion (reconstruction) part of the expansion (reconstruction) substation needs to carry out the whole set of transmission test together with the primary equipment. When the conditions are met, it is impossible to realize the transmission test of the whole set of secondary equipment, which affects the debugging process.

Utility model content

The technical problem to be solved and the technical task proposed by the utility model are to perfect and improve the existing technical scheme, and provide a state simulation device for the primary equipment of the substation, so as to achieve the purpose of reducing the downtime of the primary equipment of the substation. For this reason, the utility model takes the following technical solutions.

A substation primary equipment state simulation device is characterized in that it includes a box body, at least one set of simulated circuit breaker circuits, at least one set of simulated operation knife switch circuits, and a control power switching circuit. The control keys include manual closing keys, Manual trip key, the number of groups of analog circuit breaker circuits corresponds to the number of control power sources; each group of analog circuit breaker circuits is equipped with a phase A closing key, A phase opening key, and B phase closing key connected to the analog circuit breaker coil , phase B opening key, phase C closing key and phase C opening key, and phase A closing key, phase A opening key, phase B closing key, phase B opening key, phase C closing key and phase C opening key The signal light corresponding to the switch key; each group of analog remote control operation knife circuit is equipped with a closing key connected to the closing coil of the knife switch, an opening key connected to the opening coil of the knife switch, and a switch corresponding to the closing key and the opening key corresponding signal lights. This technical solution is designed and developed for the on-site commissioning of substations. It is suitable for when the primary equipment on the substation site does not meet the debugging conditions. Using the primary equipment status simulation device can effectively carry out the test work in advance before the primary equipment is installed. At the same time, reduce power outage time: when the primary equipment does not meet the debugging conditions, use this primary equipment status simulation device to simulate the on-site primary equipment, and connect it with the intelligent terminal or the protection and measurement and control device in the relay protection room to complete the remote control of the primary equipment, The simulation test of protecting the whole group of transmissions completely simulates the process of secondary equipment with primary equipment test. Therefore, during the outage period of the primary equipment, it is only necessary to complete the protection, measurement and control devices, etc. to drive the entire set of primary equipment, which greatly reduces the time for the primary equipment of the substation to be out of service (power outage).

As a further improvement and supplement to the above technical solution, the utility model also includes the following additional technical features.

The control power switching circuit is provided with a DC power input terminal with a voltage of 110V and a DC power input terminal with a voltage of 220V, and the control power switching circuit is provided with a switch to switch the input of the two voltage power sources. Increase the scope of application.

There are two groups of analog circuit breaker circuits in the box, and each group of analog circuit breaker circuits is equipped with a group of closing coils of analog circuit breakers, a group of switching coils, and a monitoring circuit for opening and closing positions.

Each phase of the analog circuit breaker has auxiliary contact output, and each phase has 2 pairs of auxiliary contacts.

There are six sets of simulated operation knife switch circuits in the box to simulate the opening and closing operations of 6 knife switches at a time.

The analog operation knife switch circuit has a pair of auxiliary contact outputs.

The interlocking contact is connected in series in the simulated operation knife switch circuit to verify the interlocking function.

Each analog operation knife switch circuit is equipped with a knife switch opening and closing position monitoring circuit.

There are signal lamps for the monitoring circuit of opening and closing positions.

Beneficial effects: This technical solution is designed and developed for the on-site commissioning of substations. It is suitable for when the primary equipment on the substation site does not meet the debugging conditions. Using the primary equipment status simulation device can effectively advance the test work before the primary equipment is installed. conduct. At the same time, reduce power outage time: when the primary equipment does not meet the debugging conditions, use this primary equipment status simulation device to simulate the on-site primary equipment, and connect it with the intelligent terminal or the protection and measurement and control device in the relay room to complete the remote control of the primary equipment, The simulation test of protecting the whole group of transmissions completely simulates the process of secondary equipment with primary equipment test. Therefore, during the outage period of the primary equipment, it is only necessary to complete the protection, measurement and control devices, etc. to drive the entire set of primary equipment, which greatly reduces the outage (power outage) time of the primary equipment of the substation.

Description of drawings

Fig. 1 is the application schematic diagram of the utility model.

Fig. 2 is the electrical diagram of the analog operation knife switch circuit of the utility model.

Fig. 3 is the circuit electrical diagram of the first group of analog circuit breakers of the utility model.

Fig. 4 is the circuit electrical diagram of the second group of simulated circuit breakers of the utility model.

Fig. 5 is a front view of the utility model.

detailed description

The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings of the description.

As shown in Figure 1, this technical solution is applied to the whole set of tests of relay protection in power systems. It simulates the opening and closing action of high-voltage circuit breakers to complete the tripping and closing tests of relay protection; it is applied to automatic debugging of transmission in substations Test, which simulates the opening and closing action behavior of primary equipment in substations such as high-voltage circuit breakers, isolating switches, and grounding switches, and implements feedback action signals to complete automatic debugging with equipment linkage tests.

In the current intelligent substation, it is matched with the intelligent terminal device, and it is used as a simulation product of the operation circuit of equipment such as high-voltage circuit breaker, disconnector and grounding switch. The behavior of the simulated primary equipment operation circuit is the same as that of the real primary equipment.

As shown in Figures 3 and 4, this primary equipment state simulation device can simulate remote phase-splitting operation circuit breakers. The opening and closing input terminals are A-phase closing 107A, A-phase opening 137A, and B, which are suitable for the first group of control power supplies. Phase closing 107B, phase B opening 137B, phase C closing 107C, 137CC phase opening and phase A closing 207A, phase A opening 237A, phase B closing 207B, phase B opening 237B, C-phase closing 207C, C-phase opening 237C. Among them: 137 trip switches (the first group control power supply), 107 close switches (the first group control power supply), 109 switch position closing (the first group control power supply); 237 jump switches (the second group control power supply), 207 close Switch (group 2 control power supply), 209 switch position closing (group 2 control power supply).

As shown in Figure 2, the primary equipment state simulation device can simulate the remote control operation of the switch knife, and the opening and closing input terminals are respectively closing KNGH and opening KNGF. Wherein, N represents a number from 1 to 6, representing switch blade 1 to switch blade 6 respectively. KXGH controls switch knife closing, X stands for 1-6, respectively stands for switch knife 1-6.

As shown in Figure 5, there are manual closing and manual tripping buttons for each operation object on the panel, and opening and closing signal lights, respectively: for circuit breakers, A1 close, B1 close, C1 close, A2 close , B2 close, C2 close six red signal lights and A1 jump, B1 jump, C1 jump, A2 jump, B2 jump, C2 jump six green signal lights; for the switch knife, it is 1G close, 2G close, 3G close, 4G close, 5G There are six red signal lights for combination and 6G combination and six green signal lights for 1G jump, 2G jump, 3G jump, 4G jump, 5G jump, and 6G jump.

In the simulation circuit, there is a set of changeover contacts for each output of the relay. The closing or opening of the contacts is completely isolated from the operating power supply. It can be used for cooperating tests with microcomputer relay protection devices, intelligent measurement and control devices, intelligent terminals and other equipment.

The substation primary equipment state simulation device shown in the above figure is a specific embodiment of the utility model, which has already reflected the substantive features and progress of the utility model, and can be implemented according to the actual use needs under the inspiration of the utility model Equivalent modifications in aspects such as shape and structure are all within the scope of protection of this proposal.

Claims (9)

1. The device for simulating the state of primary equipment in a substation is characterized in that it includes a box body, at least one set of simulated circuit breaker circuits, at least one set of simulated operation knife switch circuits, and a control power switching circuit, and the control keys include manual closing key, manual trip key, the number of groups of analog circuit breaker circuits corresponds to the number of control power sources; each group of analog circuit breaker circuits is equipped with A phase closing key, A phase opening key, and B phase closing key connected to the analog circuit breaker coil. Switch key, phase B opening key, phase C closing key and phase C opening key, and phase A closing key, phase A opening key, phase B closing key, phase B opening key, phase C closing key and C The signal light corresponding to the phase opening key; each group of analog remote control operation knife circuit is equipped with a closing key connected to the knife closing coil, an opening key connected to the knife opening coil, and a closing key and an opening key. The signal light corresponding to the key. 2. The transformer substation primary equipment state simulation device according to claim 1, characterized in that: the control power switch circuit is provided with a DC power input terminal with a voltage of 110V and a DC power input terminal with a voltage of 220V, and the control power switch The circuit is provided with a switch to switch the input of the two-voltage power supply. 3. The transformer substation primary equipment state simulation device according to claim 1, characterized in that: two groups of simulated circuit breaker circuits in the cabinet, each group of simulated circuit breaker circuits are provided with a group of closing coils of the simulated circuit breaker and a set of Opening coil, and opening and closing position monitoring circuit. 4. The device for simulating the primary equipment state of a substation according to claim 3, wherein each phase of the simulated circuit breaker has an auxiliary contact output, and each phase has 2 pairs of auxiliary contacts. 5. The device for simulating the primary equipment state of a substation according to claim 1, characterized in that: six groups of analog operation knife switch circuits are provided in the box to simulate the opening and closing operations of six knife switches at a time. 6. The device for simulating the state of primary equipment in a substation according to claim 1, wherein a pair of auxiliary contact outputs are provided for the analog operation knife switch circuit. 7. The device for simulating the state of primary equipment in a substation according to claim 1, wherein an interlocking contact is connected in series in the simulated operation knife circuit to verify the interlocking function. 8. The device for simulating the state of primary equipment in a substation according to claim 1, wherein each circuit of a simulated operation switch is equipped with a switch opening and closing position monitoring circuit. 9. The device for simulating the state of primary equipment in a substation according to claim 1, characterized in that: the monitoring circuits for opening and closing positions are equipped with signal lamps.